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VirtualBox - how to increase video memory?


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}







36















I have just installed Ubuntu 14.04 on VirtualBox, including the guest additions.



However, the display is really slow. Looking at the display settings I can see that the video memory is only 12MB but I can't move the slider to increase it. The checkboxes for extended features are greyed-out too. See screenshot.



.



How do I increase the amount of memory?



TIA










share|improve this question





























    36















    I have just installed Ubuntu 14.04 on VirtualBox, including the guest additions.



    However, the display is really slow. Looking at the display settings I can see that the video memory is only 12MB but I can't move the slider to increase it. The checkboxes for extended features are greyed-out too. See screenshot.



    .



    How do I increase the amount of memory?



    TIA










    share|improve this question

























      36












      36








      36


      9






      I have just installed Ubuntu 14.04 on VirtualBox, including the guest additions.



      However, the display is really slow. Looking at the display settings I can see that the video memory is only 12MB but I can't move the slider to increase it. The checkboxes for extended features are greyed-out too. See screenshot.



      .



      How do I increase the amount of memory?



      TIA










      share|improve this question














      I have just installed Ubuntu 14.04 on VirtualBox, including the guest additions.



      However, the display is really slow. Looking at the display settings I can see that the video memory is only 12MB but I can't move the slider to increase it. The checkboxes for extended features are greyed-out too. See screenshot.



      .



      How do I increase the amount of memory?



      TIA







      virtualbox guest-additions






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Feb 18 '15 at 20:28









      kslksl

      3251413




      3251413






















          8 Answers
          8






          active

          oldest

          votes


















          30














          You need to shut down the virtual OS before you can edit settings.






          share|improve this answer


























          • Just an addition, you need to properly shutdown the virtual OS. Saving the state won't work.

            – Reeshabh Ranjan
            Mar 3 at 17:18



















          53














          Virtual Box supports up to 256 MB of video RAM. This can not be set using the slider of the Virtual Box Manager.



          To make full use of all supported memory we can issue the following command in a terminal:



          VBoxManage modifyvm "Name of VM" --vram 256


          Before we change settings such as the video RAM a pre-existing virtual machine has to be shut down.



          Note that for 3D video hardware acceleration from the guest addition's video driver the physical RAM of the host graphics card will be passed through. The video RAM settings of the virtual machine will not affect this.






          share|improve this answer


























          • This is the only working way. Updating manually the vbox file doesn't work as the file is refreshed by VirtualBox automatically.

            – ZedTuX
            Dec 1 '16 at 12:18











          • This is a TERRIBLE suggestion. Trying this just completely borked my VM. Now it boots to a "FATAL: INT18: BOOT FAILURE"

            – krb686
            Dec 25 '16 at 0:09











          • @krb686: sorry to hear that. We can't reproduce this error here. It may not be related to increasing VRAM.

            – Takkat
            Dec 25 '16 at 9:43











          • @krb686 this error is related to the bootprocedure. e.g. missing Master Boot Records or similar boot-related parts of an OS

            – Foaster
            Jun 8 '17 at 13:53











          • This command caused my machine to cease booting (boots to all black screen, no text). Reversing (running again with 128 ) brought it back.

            – mike
            Jun 12 '17 at 20:16



















          8















          1. Stop the virtual machine and close virtualbox

          2. Using a text editor like "Sublime Text" open YOUMACHINE.vbox. Make a backup beforehand.


          3. Look for vram entry and change its value



            <Display VRAMSize="256" monitorCount="1" accelerate3D="true"
            accelerate2DVideo="false"/>


          4. Save the file.



          Now you can increase the video memory above 128.






          share|improve this answer





















          • 2





            With the virtual machine stopped you should be able to modify the settings through VirtualBox's UI. You don't have to resort to a text editor to change that setting unless something is really wrong.

            – jkt123
            Apr 24 '15 at 0:30






          • 1





            editing .vbox by hand is not recommended.

            – Elder Geek
            Apr 24 '15 at 1:22






          • 1





            @jkt123 I would not have suggested it if it was possible through VB UI, I'm talking here about video ram size which can't be otherwise resized beyond 128.

            – elsadek
            Apr 24 '15 at 13:22













          • @ElderGeek not for advanced users, and making a backup before editing is always a best practice.

            – elsadek
            Apr 24 '15 at 13:25











          • Shouldn't your answer make that clear to encourage the novice to avoid making a mistake? It's still unnecessary and not recommended - see virtualbox.org/manual/ch08.html

            – Elder Geek
            Apr 24 '15 at 15:12



















          2














          As Marvin stated, you need to shutdown the VM before you change things. You also need to sudo apt-get install virtualbox-guest-dkms in the virtual ubuntu. And be advised that 3d acceleration might not work, and Unity is heavy on 3D. Thus using a less graphic intensive desktop like xfce4 might be a better/faster option. Please enable 2D acceleration at least. It should provide some speedup.






          share|improve this answer
























          • Thanks for the info. I already did a sudo apt-get install dkms. What does sudo apt-get install virtualbox-guest-dkms? What's the difference?

            – ksl
            Feb 18 '15 at 20:52













          • dkms = dynamic/dell kernel management system. virtualbox-guest-dkms are the drivers in guest addition for the ubuntu kernel made to work with dkms. Thus you need both.

            – user283885
            Feb 18 '15 at 21:00





















          1














          In VB v5.1.x, if you enable 3D Acceleration first in the UI, VRAM automatically jumps to 256M.








          share|improve this answer
























          • The question refers to an Ubuntu guest, your screenshot is of a Windows 10 guest. VirtualBox has different limits and setting for different types of guests. Linux guest can not use "2D Video Acc", and the max video memory is 128MB

            – Richard Pierre
            Mar 22 '17 at 4:51













          • @RichardPierre - don't want to start arguing, but my screenshot was actually from Ubunty. Please recheck.

            – alboko
            Aug 23 '17 at 21:00






          • 2





            you are running a Windows "Guest" on a Linux "Host". Windows "Guest" have different allowable settings. One of those is 2d acceleration is for "Windows Guests" only : virtualbox.org/manual/ch04.html#guestadd-2d You'll also find that that maximum a Linux "Guest" can allocate to Video memory is 128MB. So try again with a Linux "Guest" and let me know if it's otherwise.

            – Richard Pierre
            Aug 24 '17 at 22:52





















          0















          1. Shutdown VM

          2. From the elevated command prompt:


          "C:Program FilesOracleVirtualBoxVBoxManage.exe" modifyvm "Ubuntu" --vram 256
          Replace "Ubuntu" with the name of your VM



          Verfied working.



          And of course from the terminal from the VM Ubuntu:




          1. sudo apt-get install dkms & sudo apt-get install virtualbox-guest-dkms

          2. Reboot VM






          share|improve this answer





















          • 1





            true.. But also the exact location of vboxmanager.exe. (This is missing in previous post) Otherwise it won't work.

            – Johan Vijfhuizen
            Feb 24 '18 at 13:04





















          0














          Running vboxmanage itself to find that --vram option but could not, however, using the command in top answer worked. Someone has posted that your VM doesn't need more RAM assigned to your display than needed so am posting my settings for Win7 running in 4k without any acceleration enabled that it complained about "not enough ram". Hope someone will find this useful.
          The last post is from Feb18 so this is an update that it works.
          Since someone posted here that it went black screen - advice is - clone your VM and test it there first if it works.



          Settings before the change:
          Settings before the change



          Settings after the change:
          Settings after the change






          share|improve this answer

































            0














            Set Monitor Count to 8 and you will have the ability to increase the video memory at 256 MB.






            share|improve this answer








            New contributor




            Nurudin Imsirovic is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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              8 Answers
              8






              active

              oldest

              votes








              8 Answers
              8






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes









              30














              You need to shut down the virtual OS before you can edit settings.






              share|improve this answer


























              • Just an addition, you need to properly shutdown the virtual OS. Saving the state won't work.

                – Reeshabh Ranjan
                Mar 3 at 17:18
















              30














              You need to shut down the virtual OS before you can edit settings.






              share|improve this answer


























              • Just an addition, you need to properly shutdown the virtual OS. Saving the state won't work.

                – Reeshabh Ranjan
                Mar 3 at 17:18














              30












              30








              30







              You need to shut down the virtual OS before you can edit settings.






              share|improve this answer















              You need to shut down the virtual OS before you can edit settings.







              share|improve this answer














              share|improve this answer



              share|improve this answer








              edited Aug 8 '16 at 18:21









              JetCrusherTorpedo

              33




              33










              answered Feb 18 '15 at 20:35









              Marvin MicekMarvin Micek

              572416




              572416













              • Just an addition, you need to properly shutdown the virtual OS. Saving the state won't work.

                – Reeshabh Ranjan
                Mar 3 at 17:18



















              • Just an addition, you need to properly shutdown the virtual OS. Saving the state won't work.

                – Reeshabh Ranjan
                Mar 3 at 17:18

















              Just an addition, you need to properly shutdown the virtual OS. Saving the state won't work.

              – Reeshabh Ranjan
              Mar 3 at 17:18





              Just an addition, you need to properly shutdown the virtual OS. Saving the state won't work.

              – Reeshabh Ranjan
              Mar 3 at 17:18













              53














              Virtual Box supports up to 256 MB of video RAM. This can not be set using the slider of the Virtual Box Manager.



              To make full use of all supported memory we can issue the following command in a terminal:



              VBoxManage modifyvm "Name of VM" --vram 256


              Before we change settings such as the video RAM a pre-existing virtual machine has to be shut down.



              Note that for 3D video hardware acceleration from the guest addition's video driver the physical RAM of the host graphics card will be passed through. The video RAM settings of the virtual machine will not affect this.






              share|improve this answer


























              • This is the only working way. Updating manually the vbox file doesn't work as the file is refreshed by VirtualBox automatically.

                – ZedTuX
                Dec 1 '16 at 12:18











              • This is a TERRIBLE suggestion. Trying this just completely borked my VM. Now it boots to a "FATAL: INT18: BOOT FAILURE"

                – krb686
                Dec 25 '16 at 0:09











              • @krb686: sorry to hear that. We can't reproduce this error here. It may not be related to increasing VRAM.

                – Takkat
                Dec 25 '16 at 9:43











              • @krb686 this error is related to the bootprocedure. e.g. missing Master Boot Records or similar boot-related parts of an OS

                – Foaster
                Jun 8 '17 at 13:53











              • This command caused my machine to cease booting (boots to all black screen, no text). Reversing (running again with 128 ) brought it back.

                – mike
                Jun 12 '17 at 20:16
















              53














              Virtual Box supports up to 256 MB of video RAM. This can not be set using the slider of the Virtual Box Manager.



              To make full use of all supported memory we can issue the following command in a terminal:



              VBoxManage modifyvm "Name of VM" --vram 256


              Before we change settings such as the video RAM a pre-existing virtual machine has to be shut down.



              Note that for 3D video hardware acceleration from the guest addition's video driver the physical RAM of the host graphics card will be passed through. The video RAM settings of the virtual machine will not affect this.






              share|improve this answer


























              • This is the only working way. Updating manually the vbox file doesn't work as the file is refreshed by VirtualBox automatically.

                – ZedTuX
                Dec 1 '16 at 12:18











              • This is a TERRIBLE suggestion. Trying this just completely borked my VM. Now it boots to a "FATAL: INT18: BOOT FAILURE"

                – krb686
                Dec 25 '16 at 0:09











              • @krb686: sorry to hear that. We can't reproduce this error here. It may not be related to increasing VRAM.

                – Takkat
                Dec 25 '16 at 9:43











              • @krb686 this error is related to the bootprocedure. e.g. missing Master Boot Records or similar boot-related parts of an OS

                – Foaster
                Jun 8 '17 at 13:53











              • This command caused my machine to cease booting (boots to all black screen, no text). Reversing (running again with 128 ) brought it back.

                – mike
                Jun 12 '17 at 20:16














              53












              53








              53







              Virtual Box supports up to 256 MB of video RAM. This can not be set using the slider of the Virtual Box Manager.



              To make full use of all supported memory we can issue the following command in a terminal:



              VBoxManage modifyvm "Name of VM" --vram 256


              Before we change settings such as the video RAM a pre-existing virtual machine has to be shut down.



              Note that for 3D video hardware acceleration from the guest addition's video driver the physical RAM of the host graphics card will be passed through. The video RAM settings of the virtual machine will not affect this.






              share|improve this answer















              Virtual Box supports up to 256 MB of video RAM. This can not be set using the slider of the Virtual Box Manager.



              To make full use of all supported memory we can issue the following command in a terminal:



              VBoxManage modifyvm "Name of VM" --vram 256


              Before we change settings such as the video RAM a pre-existing virtual machine has to be shut down.



              Note that for 3D video hardware acceleration from the guest addition's video driver the physical RAM of the host graphics card will be passed through. The video RAM settings of the virtual machine will not affect this.







              share|improve this answer














              share|improve this answer



              share|improve this answer








              edited Mar 8 '16 at 21:56

























              answered Feb 18 '15 at 21:48









              TakkatTakkat

              109k37253379




              109k37253379













              • This is the only working way. Updating manually the vbox file doesn't work as the file is refreshed by VirtualBox automatically.

                – ZedTuX
                Dec 1 '16 at 12:18











              • This is a TERRIBLE suggestion. Trying this just completely borked my VM. Now it boots to a "FATAL: INT18: BOOT FAILURE"

                – krb686
                Dec 25 '16 at 0:09











              • @krb686: sorry to hear that. We can't reproduce this error here. It may not be related to increasing VRAM.

                – Takkat
                Dec 25 '16 at 9:43











              • @krb686 this error is related to the bootprocedure. e.g. missing Master Boot Records or similar boot-related parts of an OS

                – Foaster
                Jun 8 '17 at 13:53











              • This command caused my machine to cease booting (boots to all black screen, no text). Reversing (running again with 128 ) brought it back.

                – mike
                Jun 12 '17 at 20:16



















              • This is the only working way. Updating manually the vbox file doesn't work as the file is refreshed by VirtualBox automatically.

                – ZedTuX
                Dec 1 '16 at 12:18











              • This is a TERRIBLE suggestion. Trying this just completely borked my VM. Now it boots to a "FATAL: INT18: BOOT FAILURE"

                – krb686
                Dec 25 '16 at 0:09











              • @krb686: sorry to hear that. We can't reproduce this error here. It may not be related to increasing VRAM.

                – Takkat
                Dec 25 '16 at 9:43











              • @krb686 this error is related to the bootprocedure. e.g. missing Master Boot Records or similar boot-related parts of an OS

                – Foaster
                Jun 8 '17 at 13:53











              • This command caused my machine to cease booting (boots to all black screen, no text). Reversing (running again with 128 ) brought it back.

                – mike
                Jun 12 '17 at 20:16

















              This is the only working way. Updating manually the vbox file doesn't work as the file is refreshed by VirtualBox automatically.

              – ZedTuX
              Dec 1 '16 at 12:18





              This is the only working way. Updating manually the vbox file doesn't work as the file is refreshed by VirtualBox automatically.

              – ZedTuX
              Dec 1 '16 at 12:18













              This is a TERRIBLE suggestion. Trying this just completely borked my VM. Now it boots to a "FATAL: INT18: BOOT FAILURE"

              – krb686
              Dec 25 '16 at 0:09





              This is a TERRIBLE suggestion. Trying this just completely borked my VM. Now it boots to a "FATAL: INT18: BOOT FAILURE"

              – krb686
              Dec 25 '16 at 0:09













              @krb686: sorry to hear that. We can't reproduce this error here. It may not be related to increasing VRAM.

              – Takkat
              Dec 25 '16 at 9:43





              @krb686: sorry to hear that. We can't reproduce this error here. It may not be related to increasing VRAM.

              – Takkat
              Dec 25 '16 at 9:43













              @krb686 this error is related to the bootprocedure. e.g. missing Master Boot Records or similar boot-related parts of an OS

              – Foaster
              Jun 8 '17 at 13:53





              @krb686 this error is related to the bootprocedure. e.g. missing Master Boot Records or similar boot-related parts of an OS

              – Foaster
              Jun 8 '17 at 13:53













              This command caused my machine to cease booting (boots to all black screen, no text). Reversing (running again with 128 ) brought it back.

              – mike
              Jun 12 '17 at 20:16





              This command caused my machine to cease booting (boots to all black screen, no text). Reversing (running again with 128 ) brought it back.

              – mike
              Jun 12 '17 at 20:16











              8















              1. Stop the virtual machine and close virtualbox

              2. Using a text editor like "Sublime Text" open YOUMACHINE.vbox. Make a backup beforehand.


              3. Look for vram entry and change its value



                <Display VRAMSize="256" monitorCount="1" accelerate3D="true"
                accelerate2DVideo="false"/>


              4. Save the file.



              Now you can increase the video memory above 128.






              share|improve this answer





















              • 2





                With the virtual machine stopped you should be able to modify the settings through VirtualBox's UI. You don't have to resort to a text editor to change that setting unless something is really wrong.

                – jkt123
                Apr 24 '15 at 0:30






              • 1





                editing .vbox by hand is not recommended.

                – Elder Geek
                Apr 24 '15 at 1:22






              • 1





                @jkt123 I would not have suggested it if it was possible through VB UI, I'm talking here about video ram size which can't be otherwise resized beyond 128.

                – elsadek
                Apr 24 '15 at 13:22













              • @ElderGeek not for advanced users, and making a backup before editing is always a best practice.

                – elsadek
                Apr 24 '15 at 13:25











              • Shouldn't your answer make that clear to encourage the novice to avoid making a mistake? It's still unnecessary and not recommended - see virtualbox.org/manual/ch08.html

                – Elder Geek
                Apr 24 '15 at 15:12
















              8















              1. Stop the virtual machine and close virtualbox

              2. Using a text editor like "Sublime Text" open YOUMACHINE.vbox. Make a backup beforehand.


              3. Look for vram entry and change its value



                <Display VRAMSize="256" monitorCount="1" accelerate3D="true"
                accelerate2DVideo="false"/>


              4. Save the file.



              Now you can increase the video memory above 128.






              share|improve this answer





















              • 2





                With the virtual machine stopped you should be able to modify the settings through VirtualBox's UI. You don't have to resort to a text editor to change that setting unless something is really wrong.

                – jkt123
                Apr 24 '15 at 0:30






              • 1





                editing .vbox by hand is not recommended.

                – Elder Geek
                Apr 24 '15 at 1:22






              • 1





                @jkt123 I would not have suggested it if it was possible through VB UI, I'm talking here about video ram size which can't be otherwise resized beyond 128.

                – elsadek
                Apr 24 '15 at 13:22













              • @ElderGeek not for advanced users, and making a backup before editing is always a best practice.

                – elsadek
                Apr 24 '15 at 13:25











              • Shouldn't your answer make that clear to encourage the novice to avoid making a mistake? It's still unnecessary and not recommended - see virtualbox.org/manual/ch08.html

                – Elder Geek
                Apr 24 '15 at 15:12














              8












              8








              8








              1. Stop the virtual machine and close virtualbox

              2. Using a text editor like "Sublime Text" open YOUMACHINE.vbox. Make a backup beforehand.


              3. Look for vram entry and change its value



                <Display VRAMSize="256" monitorCount="1" accelerate3D="true"
                accelerate2DVideo="false"/>


              4. Save the file.



              Now you can increase the video memory above 128.






              share|improve this answer
















              1. Stop the virtual machine and close virtualbox

              2. Using a text editor like "Sublime Text" open YOUMACHINE.vbox. Make a backup beforehand.


              3. Look for vram entry and change its value



                <Display VRAMSize="256" monitorCount="1" accelerate3D="true"
                accelerate2DVideo="false"/>


              4. Save the file.



              Now you can increase the video memory above 128.







              share|improve this answer














              share|improve this answer



              share|improve this answer








              edited Oct 6 '15 at 12:06

























              answered Apr 23 '15 at 23:12









              elsadekelsadek

              18914




              18914








              • 2





                With the virtual machine stopped you should be able to modify the settings through VirtualBox's UI. You don't have to resort to a text editor to change that setting unless something is really wrong.

                – jkt123
                Apr 24 '15 at 0:30






              • 1





                editing .vbox by hand is not recommended.

                – Elder Geek
                Apr 24 '15 at 1:22






              • 1





                @jkt123 I would not have suggested it if it was possible through VB UI, I'm talking here about video ram size which can't be otherwise resized beyond 128.

                – elsadek
                Apr 24 '15 at 13:22













              • @ElderGeek not for advanced users, and making a backup before editing is always a best practice.

                – elsadek
                Apr 24 '15 at 13:25











              • Shouldn't your answer make that clear to encourage the novice to avoid making a mistake? It's still unnecessary and not recommended - see virtualbox.org/manual/ch08.html

                – Elder Geek
                Apr 24 '15 at 15:12














              • 2





                With the virtual machine stopped you should be able to modify the settings through VirtualBox's UI. You don't have to resort to a text editor to change that setting unless something is really wrong.

                – jkt123
                Apr 24 '15 at 0:30






              • 1





                editing .vbox by hand is not recommended.

                – Elder Geek
                Apr 24 '15 at 1:22






              • 1





                @jkt123 I would not have suggested it if it was possible through VB UI, I'm talking here about video ram size which can't be otherwise resized beyond 128.

                – elsadek
                Apr 24 '15 at 13:22













              • @ElderGeek not for advanced users, and making a backup before editing is always a best practice.

                – elsadek
                Apr 24 '15 at 13:25











              • Shouldn't your answer make that clear to encourage the novice to avoid making a mistake? It's still unnecessary and not recommended - see virtualbox.org/manual/ch08.html

                – Elder Geek
                Apr 24 '15 at 15:12








              2




              2





              With the virtual machine stopped you should be able to modify the settings through VirtualBox's UI. You don't have to resort to a text editor to change that setting unless something is really wrong.

              – jkt123
              Apr 24 '15 at 0:30





              With the virtual machine stopped you should be able to modify the settings through VirtualBox's UI. You don't have to resort to a text editor to change that setting unless something is really wrong.

              – jkt123
              Apr 24 '15 at 0:30




              1




              1





              editing .vbox by hand is not recommended.

              – Elder Geek
              Apr 24 '15 at 1:22





              editing .vbox by hand is not recommended.

              – Elder Geek
              Apr 24 '15 at 1:22




              1




              1





              @jkt123 I would not have suggested it if it was possible through VB UI, I'm talking here about video ram size which can't be otherwise resized beyond 128.

              – elsadek
              Apr 24 '15 at 13:22







              @jkt123 I would not have suggested it if it was possible through VB UI, I'm talking here about video ram size which can't be otherwise resized beyond 128.

              – elsadek
              Apr 24 '15 at 13:22















              @ElderGeek not for advanced users, and making a backup before editing is always a best practice.

              – elsadek
              Apr 24 '15 at 13:25





              @ElderGeek not for advanced users, and making a backup before editing is always a best practice.

              – elsadek
              Apr 24 '15 at 13:25













              Shouldn't your answer make that clear to encourage the novice to avoid making a mistake? It's still unnecessary and not recommended - see virtualbox.org/manual/ch08.html

              – Elder Geek
              Apr 24 '15 at 15:12





              Shouldn't your answer make that clear to encourage the novice to avoid making a mistake? It's still unnecessary and not recommended - see virtualbox.org/manual/ch08.html

              – Elder Geek
              Apr 24 '15 at 15:12











              2














              As Marvin stated, you need to shutdown the VM before you change things. You also need to sudo apt-get install virtualbox-guest-dkms in the virtual ubuntu. And be advised that 3d acceleration might not work, and Unity is heavy on 3D. Thus using a less graphic intensive desktop like xfce4 might be a better/faster option. Please enable 2D acceleration at least. It should provide some speedup.






              share|improve this answer
























              • Thanks for the info. I already did a sudo apt-get install dkms. What does sudo apt-get install virtualbox-guest-dkms? What's the difference?

                – ksl
                Feb 18 '15 at 20:52













              • dkms = dynamic/dell kernel management system. virtualbox-guest-dkms are the drivers in guest addition for the ubuntu kernel made to work with dkms. Thus you need both.

                – user283885
                Feb 18 '15 at 21:00


















              2














              As Marvin stated, you need to shutdown the VM before you change things. You also need to sudo apt-get install virtualbox-guest-dkms in the virtual ubuntu. And be advised that 3d acceleration might not work, and Unity is heavy on 3D. Thus using a less graphic intensive desktop like xfce4 might be a better/faster option. Please enable 2D acceleration at least. It should provide some speedup.






              share|improve this answer
























              • Thanks for the info. I already did a sudo apt-get install dkms. What does sudo apt-get install virtualbox-guest-dkms? What's the difference?

                – ksl
                Feb 18 '15 at 20:52













              • dkms = dynamic/dell kernel management system. virtualbox-guest-dkms are the drivers in guest addition for the ubuntu kernel made to work with dkms. Thus you need both.

                – user283885
                Feb 18 '15 at 21:00
















              2












              2








              2







              As Marvin stated, you need to shutdown the VM before you change things. You also need to sudo apt-get install virtualbox-guest-dkms in the virtual ubuntu. And be advised that 3d acceleration might not work, and Unity is heavy on 3D. Thus using a less graphic intensive desktop like xfce4 might be a better/faster option. Please enable 2D acceleration at least. It should provide some speedup.






              share|improve this answer













              As Marvin stated, you need to shutdown the VM before you change things. You also need to sudo apt-get install virtualbox-guest-dkms in the virtual ubuntu. And be advised that 3d acceleration might not work, and Unity is heavy on 3D. Thus using a less graphic intensive desktop like xfce4 might be a better/faster option. Please enable 2D acceleration at least. It should provide some speedup.







              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered Feb 18 '15 at 20:44









              user283885user283885

              40625




              40625













              • Thanks for the info. I already did a sudo apt-get install dkms. What does sudo apt-get install virtualbox-guest-dkms? What's the difference?

                – ksl
                Feb 18 '15 at 20:52













              • dkms = dynamic/dell kernel management system. virtualbox-guest-dkms are the drivers in guest addition for the ubuntu kernel made to work with dkms. Thus you need both.

                – user283885
                Feb 18 '15 at 21:00





















              • Thanks for the info. I already did a sudo apt-get install dkms. What does sudo apt-get install virtualbox-guest-dkms? What's the difference?

                – ksl
                Feb 18 '15 at 20:52













              • dkms = dynamic/dell kernel management system. virtualbox-guest-dkms are the drivers in guest addition for the ubuntu kernel made to work with dkms. Thus you need both.

                – user283885
                Feb 18 '15 at 21:00



















              Thanks for the info. I already did a sudo apt-get install dkms. What does sudo apt-get install virtualbox-guest-dkms? What's the difference?

              – ksl
              Feb 18 '15 at 20:52







              Thanks for the info. I already did a sudo apt-get install dkms. What does sudo apt-get install virtualbox-guest-dkms? What's the difference?

              – ksl
              Feb 18 '15 at 20:52















              dkms = dynamic/dell kernel management system. virtualbox-guest-dkms are the drivers in guest addition for the ubuntu kernel made to work with dkms. Thus you need both.

              – user283885
              Feb 18 '15 at 21:00







              dkms = dynamic/dell kernel management system. virtualbox-guest-dkms are the drivers in guest addition for the ubuntu kernel made to work with dkms. Thus you need both.

              – user283885
              Feb 18 '15 at 21:00













              1














              In VB v5.1.x, if you enable 3D Acceleration first in the UI, VRAM automatically jumps to 256M.








              share|improve this answer
























              • The question refers to an Ubuntu guest, your screenshot is of a Windows 10 guest. VirtualBox has different limits and setting for different types of guests. Linux guest can not use "2D Video Acc", and the max video memory is 128MB

                – Richard Pierre
                Mar 22 '17 at 4:51













              • @RichardPierre - don't want to start arguing, but my screenshot was actually from Ubunty. Please recheck.

                – alboko
                Aug 23 '17 at 21:00






              • 2





                you are running a Windows "Guest" on a Linux "Host". Windows "Guest" have different allowable settings. One of those is 2d acceleration is for "Windows Guests" only : virtualbox.org/manual/ch04.html#guestadd-2d You'll also find that that maximum a Linux "Guest" can allocate to Video memory is 128MB. So try again with a Linux "Guest" and let me know if it's otherwise.

                – Richard Pierre
                Aug 24 '17 at 22:52


















              1














              In VB v5.1.x, if you enable 3D Acceleration first in the UI, VRAM automatically jumps to 256M.








              share|improve this answer
























              • The question refers to an Ubuntu guest, your screenshot is of a Windows 10 guest. VirtualBox has different limits and setting for different types of guests. Linux guest can not use "2D Video Acc", and the max video memory is 128MB

                – Richard Pierre
                Mar 22 '17 at 4:51













              • @RichardPierre - don't want to start arguing, but my screenshot was actually from Ubunty. Please recheck.

                – alboko
                Aug 23 '17 at 21:00






              • 2





                you are running a Windows "Guest" on a Linux "Host". Windows "Guest" have different allowable settings. One of those is 2d acceleration is for "Windows Guests" only : virtualbox.org/manual/ch04.html#guestadd-2d You'll also find that that maximum a Linux "Guest" can allocate to Video memory is 128MB. So try again with a Linux "Guest" and let me know if it's otherwise.

                – Richard Pierre
                Aug 24 '17 at 22:52
















              1












              1








              1







              In VB v5.1.x, if you enable 3D Acceleration first in the UI, VRAM automatically jumps to 256M.








              share|improve this answer













              In VB v5.1.x, if you enable 3D Acceleration first in the UI, VRAM automatically jumps to 256M.









              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered Nov 10 '16 at 15:56









              albokoalboko

              1192




              1192













              • The question refers to an Ubuntu guest, your screenshot is of a Windows 10 guest. VirtualBox has different limits and setting for different types of guests. Linux guest can not use "2D Video Acc", and the max video memory is 128MB

                – Richard Pierre
                Mar 22 '17 at 4:51













              • @RichardPierre - don't want to start arguing, but my screenshot was actually from Ubunty. Please recheck.

                – alboko
                Aug 23 '17 at 21:00






              • 2





                you are running a Windows "Guest" on a Linux "Host". Windows "Guest" have different allowable settings. One of those is 2d acceleration is for "Windows Guests" only : virtualbox.org/manual/ch04.html#guestadd-2d You'll also find that that maximum a Linux "Guest" can allocate to Video memory is 128MB. So try again with a Linux "Guest" and let me know if it's otherwise.

                – Richard Pierre
                Aug 24 '17 at 22:52





















              • The question refers to an Ubuntu guest, your screenshot is of a Windows 10 guest. VirtualBox has different limits and setting for different types of guests. Linux guest can not use "2D Video Acc", and the max video memory is 128MB

                – Richard Pierre
                Mar 22 '17 at 4:51













              • @RichardPierre - don't want to start arguing, but my screenshot was actually from Ubunty. Please recheck.

                – alboko
                Aug 23 '17 at 21:00






              • 2





                you are running a Windows "Guest" on a Linux "Host". Windows "Guest" have different allowable settings. One of those is 2d acceleration is for "Windows Guests" only : virtualbox.org/manual/ch04.html#guestadd-2d You'll also find that that maximum a Linux "Guest" can allocate to Video memory is 128MB. So try again with a Linux "Guest" and let me know if it's otherwise.

                – Richard Pierre
                Aug 24 '17 at 22:52



















              The question refers to an Ubuntu guest, your screenshot is of a Windows 10 guest. VirtualBox has different limits and setting for different types of guests. Linux guest can not use "2D Video Acc", and the max video memory is 128MB

              – Richard Pierre
              Mar 22 '17 at 4:51







              The question refers to an Ubuntu guest, your screenshot is of a Windows 10 guest. VirtualBox has different limits and setting for different types of guests. Linux guest can not use "2D Video Acc", and the max video memory is 128MB

              – Richard Pierre
              Mar 22 '17 at 4:51















              @RichardPierre - don't want to start arguing, but my screenshot was actually from Ubunty. Please recheck.

              – alboko
              Aug 23 '17 at 21:00





              @RichardPierre - don't want to start arguing, but my screenshot was actually from Ubunty. Please recheck.

              – alboko
              Aug 23 '17 at 21:00




              2




              2





              you are running a Windows "Guest" on a Linux "Host". Windows "Guest" have different allowable settings. One of those is 2d acceleration is for "Windows Guests" only : virtualbox.org/manual/ch04.html#guestadd-2d You'll also find that that maximum a Linux "Guest" can allocate to Video memory is 128MB. So try again with a Linux "Guest" and let me know if it's otherwise.

              – Richard Pierre
              Aug 24 '17 at 22:52







              you are running a Windows "Guest" on a Linux "Host". Windows "Guest" have different allowable settings. One of those is 2d acceleration is for "Windows Guests" only : virtualbox.org/manual/ch04.html#guestadd-2d You'll also find that that maximum a Linux "Guest" can allocate to Video memory is 128MB. So try again with a Linux "Guest" and let me know if it's otherwise.

              – Richard Pierre
              Aug 24 '17 at 22:52













              0















              1. Shutdown VM

              2. From the elevated command prompt:


              "C:Program FilesOracleVirtualBoxVBoxManage.exe" modifyvm "Ubuntu" --vram 256
              Replace "Ubuntu" with the name of your VM



              Verfied working.



              And of course from the terminal from the VM Ubuntu:




              1. sudo apt-get install dkms & sudo apt-get install virtualbox-guest-dkms

              2. Reboot VM






              share|improve this answer





















              • 1





                true.. But also the exact location of vboxmanager.exe. (This is missing in previous post) Otherwise it won't work.

                – Johan Vijfhuizen
                Feb 24 '18 at 13:04


















              0















              1. Shutdown VM

              2. From the elevated command prompt:


              "C:Program FilesOracleVirtualBoxVBoxManage.exe" modifyvm "Ubuntu" --vram 256
              Replace "Ubuntu" with the name of your VM



              Verfied working.



              And of course from the terminal from the VM Ubuntu:




              1. sudo apt-get install dkms & sudo apt-get install virtualbox-guest-dkms

              2. Reboot VM






              share|improve this answer





















              • 1





                true.. But also the exact location of vboxmanager.exe. (This is missing in previous post) Otherwise it won't work.

                – Johan Vijfhuizen
                Feb 24 '18 at 13:04
















              0












              0








              0








              1. Shutdown VM

              2. From the elevated command prompt:


              "C:Program FilesOracleVirtualBoxVBoxManage.exe" modifyvm "Ubuntu" --vram 256
              Replace "Ubuntu" with the name of your VM



              Verfied working.



              And of course from the terminal from the VM Ubuntu:




              1. sudo apt-get install dkms & sudo apt-get install virtualbox-guest-dkms

              2. Reboot VM






              share|improve this answer
















              1. Shutdown VM

              2. From the elevated command prompt:


              "C:Program FilesOracleVirtualBoxVBoxManage.exe" modifyvm "Ubuntu" --vram 256
              Replace "Ubuntu" with the name of your VM



              Verfied working.



              And of course from the terminal from the VM Ubuntu:




              1. sudo apt-get install dkms & sudo apt-get install virtualbox-guest-dkms

              2. Reboot VM







              share|improve this answer














              share|improve this answer



              share|improve this answer








              edited Feb 24 '18 at 20:57









              davidbaumann

              1,45911127




              1,45911127










              answered Feb 24 '18 at 12:43









              Johan VijfhuizenJohan Vijfhuizen

              111




              111








              • 1





                true.. But also the exact location of vboxmanager.exe. (This is missing in previous post) Otherwise it won't work.

                – Johan Vijfhuizen
                Feb 24 '18 at 13:04
















              • 1





                true.. But also the exact location of vboxmanager.exe. (This is missing in previous post) Otherwise it won't work.

                – Johan Vijfhuizen
                Feb 24 '18 at 13:04










              1




              1





              true.. But also the exact location of vboxmanager.exe. (This is missing in previous post) Otherwise it won't work.

              – Johan Vijfhuizen
              Feb 24 '18 at 13:04







              true.. But also the exact location of vboxmanager.exe. (This is missing in previous post) Otherwise it won't work.

              – Johan Vijfhuizen
              Feb 24 '18 at 13:04













              0














              Running vboxmanage itself to find that --vram option but could not, however, using the command in top answer worked. Someone has posted that your VM doesn't need more RAM assigned to your display than needed so am posting my settings for Win7 running in 4k without any acceleration enabled that it complained about "not enough ram". Hope someone will find this useful.
              The last post is from Feb18 so this is an update that it works.
              Since someone posted here that it went black screen - advice is - clone your VM and test it there first if it works.



              Settings before the change:
              Settings before the change



              Settings after the change:
              Settings after the change






              share|improve this answer






























                0














                Running vboxmanage itself to find that --vram option but could not, however, using the command in top answer worked. Someone has posted that your VM doesn't need more RAM assigned to your display than needed so am posting my settings for Win7 running in 4k without any acceleration enabled that it complained about "not enough ram". Hope someone will find this useful.
                The last post is from Feb18 so this is an update that it works.
                Since someone posted here that it went black screen - advice is - clone your VM and test it there first if it works.



                Settings before the change:
                Settings before the change



                Settings after the change:
                Settings after the change






                share|improve this answer




























                  0












                  0








                  0







                  Running vboxmanage itself to find that --vram option but could not, however, using the command in top answer worked. Someone has posted that your VM doesn't need more RAM assigned to your display than needed so am posting my settings for Win7 running in 4k without any acceleration enabled that it complained about "not enough ram". Hope someone will find this useful.
                  The last post is from Feb18 so this is an update that it works.
                  Since someone posted here that it went black screen - advice is - clone your VM and test it there first if it works.



                  Settings before the change:
                  Settings before the change



                  Settings after the change:
                  Settings after the change






                  share|improve this answer















                  Running vboxmanage itself to find that --vram option but could not, however, using the command in top answer worked. Someone has posted that your VM doesn't need more RAM assigned to your display than needed so am posting my settings for Win7 running in 4k without any acceleration enabled that it complained about "not enough ram". Hope someone will find this useful.
                  The last post is from Feb18 so this is an update that it works.
                  Since someone posted here that it went black screen - advice is - clone your VM and test it there first if it works.



                  Settings before the change:
                  Settings before the change



                  Settings after the change:
                  Settings after the change







                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited Oct 2 '18 at 12:21









                  Yufenyuy Veyeh Dider

                  1,5575924




                  1,5575924










                  answered Oct 2 '18 at 10:07









                  VladVlad

                  1




                  1























                      0














                      Set Monitor Count to 8 and you will have the ability to increase the video memory at 256 MB.






                      share|improve this answer








                      New contributor




                      Nurudin Imsirovic is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                      Check out our Code of Conduct.

























                        0














                        Set Monitor Count to 8 and you will have the ability to increase the video memory at 256 MB.






                        share|improve this answer








                        New contributor




                        Nurudin Imsirovic is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                        Check out our Code of Conduct.























                          0












                          0








                          0







                          Set Monitor Count to 8 and you will have the ability to increase the video memory at 256 MB.






                          share|improve this answer








                          New contributor




                          Nurudin Imsirovic is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                          Check out our Code of Conduct.










                          Set Monitor Count to 8 and you will have the ability to increase the video memory at 256 MB.







                          share|improve this answer








                          New contributor




                          Nurudin Imsirovic is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                          Check out our Code of Conduct.









                          share|improve this answer



                          share|improve this answer






                          New contributor




                          Nurudin Imsirovic is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                          Check out our Code of Conduct.









                          answered 3 hours ago









                          Nurudin ImsirovicNurudin Imsirovic

                          1012




                          1012




                          New contributor




                          Nurudin Imsirovic is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                          Check out our Code of Conduct.





                          New contributor





                          Nurudin Imsirovic is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                          Check out our Code of Conduct.






                          Nurudin Imsirovic is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                          Check out our Code of Conduct.






























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