An apparent random pattern of PKCS#7 errors in dmesgWifi behaving weird after installing ubuntu 14.0414.04...

How to write cleanly even if my character uses expletive language?

What did “the good wine” (τὸν καλὸν οἶνον) mean in John 2:10?

Custom alignment for GeoMarkers

Is it good practice to use Linear Least-Squares with SMA?

Is a party consisting of only a bard, a cleric, and a warlock functional long-term?

Why did it take so long to abandon sail after steamships were demonstrated?

Welcoming 2019 Pi day: How to draw the letter π?

World War I as a war of liberals against authoritarians?

What options are left, if Britain cannot decide?

Did Ender ever learn that he killed Stilson and/or Bonzo?

Math equation in non italic font

Counting models satisfying a boolean formula

Could the Saturn V actually have launched astronauts around Venus?

How to deal with taxi scam when on vacation?

Bach's Toccata and Fugue in D minor breaks the "no parallel octaves" rule?

What is the Japanese sound word for the clinking of money?

Why does a Star of David appear at a rally with Francisco Franco?

Can I use USB data pins as power source

PTIJ: Who should I vote for? (21st Knesset Edition)

Are Roman Catholic priests ever addressed as pastor

What is "focus distance lower/upper" and how is it different from depth of field?

Simplify an interface for flexibly applying rules to periods of time

Have the tides ever turned twice on any open problem?

Knife as defense against stray dogs



An apparent random pattern of PKCS#7 errors in dmesg


Wifi behaving weird after installing ubuntu 14.0414.04 BIOS, ACPI Errors in dmesgLong, slow boot time for UbuntuChromium dmesg Errors Ubuntu 14.10PCIe error in dmesg logRealtek rtl8821ae Wi-Fi constantly dropping in Ubuntu 16.04PKCS Signature error/warnings running dmesg on Ubuntu Mate 18.04error in dmesg 'failed' messagesNvidia drivers cause Ubuntu 18.04 to hang on bootSeveral errors in dmesg













0















The error appears explicitly when launching the nvidia card using bumblebee, and when realtek driver is launched. And I remember correctly, also with the wifi driver. I have no strange behaviors with the machine, it seems to work well. I downgraded the driver and the kernel several times and the error persist. Currently I have the latest's and APT is up-to-date:



                          ./+o+-       david@turing

                  yyyyy- -yyyyyy+      OS: Ubuntu 16.04 xenial

               ://+//////-yyyyyyo      Kernel: x86_64 Linux 4.15.0-46-generic

           .++ .:/++++++/-.+sss/`      Uptime: 16m

         .:++o:  /++++++++/:--:/-      Packages: 3466

        o:+o+:++.`..```.-/oo+++++/     Shell: optirun screenfetch

       .:+o:+o/.          `+sssoo+/    Resolution: 1920x1080

  .++/+:+oo+o:`             /sssooo.   DE: XFCE

 /+++//+:`oo+o               /::--:.   WM: Compiz

 +/+o+++`o++o               ++////.   WM Theme: Ambiant-MATE

  .++.o+++oo+:`             /dddhhh.   GTK Theme: BlackMATE [GTK2]

       .+.o+oo:.          `oddhhhh+    Icon Theme: elementary-xfce-dark

        +.++o+o``-````.:ohdhhhhh+     Font: Sans 10

         `:o+++ `ohhhhhhhhyo++os:      CPU: Intel Core i7-7700HQ CPU @ 3.8GHz

           .o:`.syhhhhhhh/.oo++o`      GPU: GeForce GTX 1050 Ti

               /osyyyyyyo++ooo+++/     RAM: 3103MiB / 15906MiB

                   ````` +oo+++o:    

                          `oo++.     



With nvidia-415


I leave here the a great part of the output of dmesg:



[   11.320704] snd_hda_codec_realtek hdaudioC0D0:    mono: mono_out=0x0

[   11.320705] snd_hda_codec_realtek hdaudioC0D0:    inputs:

[   11.320706] snd_hda_codec_realtek hdaudioC0D0:      Headset Mic=0x19

[   11.320707] snd_hda_codec_realtek hdaudioC0D0:      Headphone Mic=0x1a

[   11.320708] snd_hda_codec_realtek hdaudioC0D0:      Internal Mic=0x12

[   11.348139] PKCS#7 signature not signed with a trusted key

[   11.358876] PKCS#7 signature not signed with a trusted key

[   11.359416] PKCS#7 signature not signed with a trusted key

[   11.399690] Bluetooth: hci0: Intel firmware patch completed and activated

[   11.439431] PKCS#7 signature not signed with a trusted key

[   11.447720] PKCS#7 signature not signed with a trusted key

[   11.450533] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 238

[   11.474240] media: Linux media interface: v0.10

[   11.480096] Linux video capture interface: v2.00

[   11.628784] uvcvideo: Found UVC 1.00 device Integrated Webcam (0bda:568a)

[   11.629867] uvcvideo 1-12:1.0: Entity type for entity Extension 4 was not initialized!

[   11.629886] uvcvideo 1-12:1.0: Entity type for entity Extension 7 was not initialized!

[   11.629887] uvcvideo 1-12:1.0: Entity type for entity Processing 2 was not initialized!

[   11.629888] uvcvideo 1-12:1.0: Entity type for entity Camera 1 was not initialized!

[   11.629982] input: Integrated Webcam: Integrated W as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/input/input19

[   11.630058] usbcore: registered new interface driver uvcvideo

[   11.630058] USB Video Class driver (1.1.1)

[   11.787465] input: HDA Intel PCH Headphone Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20

[   11.975100] Adding 8000508k swap on /dev/sda7.  Priority:-2 extents:1 across:8000508k FS

[   11.997623] EXT4-fs (sda9): mounted filesystem with ordered data mode. Opts: (null)

[   12.196930] audit: type=1400 audit(1552787830.489:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/cups-browsed" pid=896 comm="apparmor_parser"

[   12.197360] audit: type=1400 audit(1552787830.489:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine" pid=894 comm="apparmor_parser"

[   12.197362] audit: type=1400 audit(1552787830.489:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=894 comm="apparmor_parser"

[   12.197569] audit: type=1400 audit(1552787830.489:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/5145/usr/lib/snapd/snap-confine" pid=888 comm="apparmor_parser"

[   12.197572] audit: type=1400 audit(1552787830.489:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/5145/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=888 comm="apparmor_parser"

[   12.197950] audit: type=1400 audit(1552787830.489:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/sbin/dhclient" pid=887 comm="apparmor_parser"

[   12.197952] audit: type=1400 audit(1552787830.489:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=887 comm="apparmor_parser"

[   12.197954] audit: type=1400 audit(1552787830.489:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=887 comm="apparmor_parser"

[   12.197956] audit: type=1400 audit(1552787830.489:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/connman/scripts/dhclient-script" pid=887 comm="apparmor_parser"

[   12.198833] audit: type=1400 audit(1552787830.489:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/tcpdump" pid=921 comm="apparmor_parser"

[   12.722282] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

[   12.722283] Bluetooth: BNEP filters: protocol multicast

[   12.722286] Bluetooth: BNEP socket layer initialized

[   12.972202] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[   12.981785] hdaps: supported laptop not found!

[   12.981785] hdaps: driver init failed (ret=-19)!

[   13.031013] r8169 0000:02:00.0 enp2s0: link down

[   13.031113] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[   13.034813] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.036681] applesmc: supported laptop not found!

[   13.036682] applesmc: driver init failed (ret=-19)!

[   13.102774] acer_wmi: Acer Laptop ACPI-WMI Extras

[   13.102780] acer_wmi: No or unsupported WMI interface, unable to load

[   13.131412] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.597882] nvidia-uvm: Unloaded the UVM driver in 8 mode

[   13.611821] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.712205] [drm] [nvidia-drm] [GPU ID 0x00000100] Unloading driver

[   13.732227] nvidia-modeset: Unloading

[   13.757402] nvidia-nvlink: Unregistered the Nvlink Core, major device number 241

[   13.781284] bbswitch: disabling discrete graphics

[   15.694575] Bluetooth: RFCOMM TTY layer initialized

[   15.694579] Bluetooth: RFCOMM socket layer initialized

[   15.694582] Bluetooth: RFCOMM ver 1.11

[   18.098078] Non-volatile memory driver v1.3

[   18.934574] wlp3s0: authenticate with f8:98:b9:19:b9:0c

[   18.937159] wlp3s0: send auth to f8:98:b9:19:b9:0c (try 1/3)

[   18.939361] wlp3s0: authenticated

[   18.940022] wlp3s0: associate with f8:98:b9:19:b9:0c (try 1/3)

[   18.943841] wlp3s0: RX AssocResp from f8:98:b9:19:b9:0c (capab=0x1411 status=0 aid=5)

[   18.949994] wlp3s0: associated

[   18.985699] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready

[   19.014024] wlp3s0: Limiting TX power to 30 (30 - 0) dBm as advertised by f8:98:b9:19:b9:0c

[   98.270124] bbswitch: enabling discrete graphics

[   98.568294] PKCS#7 signature not signed with a trusted key

[   98.580196] nvidia-nvlink: Nvlink Core is being initialized, major device number 241

[   98.580508] nvidia 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=none,decodes=none:owns=none

[   98.679985] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  415.27  Thu Dec 20 17:25:03 CST 2018 (using threaded interrupts)

[   98.682947] PKCS#7 signature not signed with a trusted key

[   98.693213] PKCS#7 signature not signed with a trusted key

[   98.694008] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms  415.27  Thu Dec 20 17:06:08 CST 2018

[   98.784287] PKCS#7 signature not signed with a trusted key

[   98.793090] PKCS#7 signature not signed with a trusted key

[   98.793562] PKCS#7 signature not signed with a trusted key

[   98.795220] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver

[   98.795222] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 1

[   98.893338] PKCS#7 signature not signed with a trusted key

[   98.902801] PKCS#7 signature not signed with a trusted key

[   98.904910] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 238

[  129.503090] nvidia-uvm: Unloaded the UVM driver in 8 mode

[  129.521886] [drm] [nvidia-drm] [GPU ID 0x00000100] Unloading driver

[  129.561445] nvidia-modeset: Unloading

[  129.585510] nvidia-nvlink: Unregistered the Nvlink Core, major device number 241

[  129.614159] bbswitch: disabling discrete graphics

[  129.633411] pci_raw_set_power_state: 25 callbacks suppressed

[  129.633414] pci 0000:01:00.0: Refused to change power state, currently in D0





drivers nvidia bumblebee dmesg






share























  • A guy in github.com/matthieugras/Prime-Ubuntu-18.04/issues/8 says that "PKCS#7 signature not signed with a trusted key" simply means that I am using a proprietary driver. unix.stackexchange.com/questions/118116/… What do you think?, I am worried if this warnings are the preamble of something nasty.

    – David Davalos
    1 min ago


















0















The error appears explicitly when launching the nvidia card using bumblebee, and when realtek driver is launched. And I remember correctly, also with the wifi driver. I have no strange behaviors with the machine, it seems to work well. I downgraded the driver and the kernel several times and the error persist. Currently I have the latest's and APT is up-to-date:



                          ./+o+-       david@turing

                  yyyyy- -yyyyyy+      OS: Ubuntu 16.04 xenial

               ://+//////-yyyyyyo      Kernel: x86_64 Linux 4.15.0-46-generic

           .++ .:/++++++/-.+sss/`      Uptime: 16m

         .:++o:  /++++++++/:--:/-      Packages: 3466

        o:+o+:++.`..```.-/oo+++++/     Shell: optirun screenfetch

       .:+o:+o/.          `+sssoo+/    Resolution: 1920x1080

  .++/+:+oo+o:`             /sssooo.   DE: XFCE

 /+++//+:`oo+o               /::--:.   WM: Compiz

 +/+o+++`o++o               ++////.   WM Theme: Ambiant-MATE

  .++.o+++oo+:`             /dddhhh.   GTK Theme: BlackMATE [GTK2]

       .+.o+oo:.          `oddhhhh+    Icon Theme: elementary-xfce-dark

        +.++o+o``-````.:ohdhhhhh+     Font: Sans 10

         `:o+++ `ohhhhhhhhyo++os:      CPU: Intel Core i7-7700HQ CPU @ 3.8GHz

           .o:`.syhhhhhhh/.oo++o`      GPU: GeForce GTX 1050 Ti

               /osyyyyyyo++ooo+++/     RAM: 3103MiB / 15906MiB

                   ````` +oo+++o:    

                          `oo++.     



With nvidia-415


I leave here the a great part of the output of dmesg:



[   11.320704] snd_hda_codec_realtek hdaudioC0D0:    mono: mono_out=0x0

[   11.320705] snd_hda_codec_realtek hdaudioC0D0:    inputs:

[   11.320706] snd_hda_codec_realtek hdaudioC0D0:      Headset Mic=0x19

[   11.320707] snd_hda_codec_realtek hdaudioC0D0:      Headphone Mic=0x1a

[   11.320708] snd_hda_codec_realtek hdaudioC0D0:      Internal Mic=0x12

[   11.348139] PKCS#7 signature not signed with a trusted key

[   11.358876] PKCS#7 signature not signed with a trusted key

[   11.359416] PKCS#7 signature not signed with a trusted key

[   11.399690] Bluetooth: hci0: Intel firmware patch completed and activated

[   11.439431] PKCS#7 signature not signed with a trusted key

[   11.447720] PKCS#7 signature not signed with a trusted key

[   11.450533] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 238

[   11.474240] media: Linux media interface: v0.10

[   11.480096] Linux video capture interface: v2.00

[   11.628784] uvcvideo: Found UVC 1.00 device Integrated Webcam (0bda:568a)

[   11.629867] uvcvideo 1-12:1.0: Entity type for entity Extension 4 was not initialized!

[   11.629886] uvcvideo 1-12:1.0: Entity type for entity Extension 7 was not initialized!

[   11.629887] uvcvideo 1-12:1.0: Entity type for entity Processing 2 was not initialized!

[   11.629888] uvcvideo 1-12:1.0: Entity type for entity Camera 1 was not initialized!

[   11.629982] input: Integrated Webcam: Integrated W as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/input/input19

[   11.630058] usbcore: registered new interface driver uvcvideo

[   11.630058] USB Video Class driver (1.1.1)

[   11.787465] input: HDA Intel PCH Headphone Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20

[   11.975100] Adding 8000508k swap on /dev/sda7.  Priority:-2 extents:1 across:8000508k FS

[   11.997623] EXT4-fs (sda9): mounted filesystem with ordered data mode. Opts: (null)

[   12.196930] audit: type=1400 audit(1552787830.489:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/cups-browsed" pid=896 comm="apparmor_parser"

[   12.197360] audit: type=1400 audit(1552787830.489:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine" pid=894 comm="apparmor_parser"

[   12.197362] audit: type=1400 audit(1552787830.489:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=894 comm="apparmor_parser"

[   12.197569] audit: type=1400 audit(1552787830.489:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/5145/usr/lib/snapd/snap-confine" pid=888 comm="apparmor_parser"

[   12.197572] audit: type=1400 audit(1552787830.489:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/5145/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=888 comm="apparmor_parser"

[   12.197950] audit: type=1400 audit(1552787830.489:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/sbin/dhclient" pid=887 comm="apparmor_parser"

[   12.197952] audit: type=1400 audit(1552787830.489:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=887 comm="apparmor_parser"

[   12.197954] audit: type=1400 audit(1552787830.489:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=887 comm="apparmor_parser"

[   12.197956] audit: type=1400 audit(1552787830.489:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/connman/scripts/dhclient-script" pid=887 comm="apparmor_parser"

[   12.198833] audit: type=1400 audit(1552787830.489:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/tcpdump" pid=921 comm="apparmor_parser"

[   12.722282] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

[   12.722283] Bluetooth: BNEP filters: protocol multicast

[   12.722286] Bluetooth: BNEP socket layer initialized

[   12.972202] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[   12.981785] hdaps: supported laptop not found!

[   12.981785] hdaps: driver init failed (ret=-19)!

[   13.031013] r8169 0000:02:00.0 enp2s0: link down

[   13.031113] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[   13.034813] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.036681] applesmc: supported laptop not found!

[   13.036682] applesmc: driver init failed (ret=-19)!

[   13.102774] acer_wmi: Acer Laptop ACPI-WMI Extras

[   13.102780] acer_wmi: No or unsupported WMI interface, unable to load

[   13.131412] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.597882] nvidia-uvm: Unloaded the UVM driver in 8 mode

[   13.611821] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.712205] [drm] [nvidia-drm] [GPU ID 0x00000100] Unloading driver

[   13.732227] nvidia-modeset: Unloading

[   13.757402] nvidia-nvlink: Unregistered the Nvlink Core, major device number 241

[   13.781284] bbswitch: disabling discrete graphics

[   15.694575] Bluetooth: RFCOMM TTY layer initialized

[   15.694579] Bluetooth: RFCOMM socket layer initialized

[   15.694582] Bluetooth: RFCOMM ver 1.11

[   18.098078] Non-volatile memory driver v1.3

[   18.934574] wlp3s0: authenticate with f8:98:b9:19:b9:0c

[   18.937159] wlp3s0: send auth to f8:98:b9:19:b9:0c (try 1/3)

[   18.939361] wlp3s0: authenticated

[   18.940022] wlp3s0: associate with f8:98:b9:19:b9:0c (try 1/3)

[   18.943841] wlp3s0: RX AssocResp from f8:98:b9:19:b9:0c (capab=0x1411 status=0 aid=5)

[   18.949994] wlp3s0: associated

[   18.985699] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready

[   19.014024] wlp3s0: Limiting TX power to 30 (30 - 0) dBm as advertised by f8:98:b9:19:b9:0c

[   98.270124] bbswitch: enabling discrete graphics

[   98.568294] PKCS#7 signature not signed with a trusted key

[   98.580196] nvidia-nvlink: Nvlink Core is being initialized, major device number 241

[   98.580508] nvidia 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=none,decodes=none:owns=none

[   98.679985] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  415.27  Thu Dec 20 17:25:03 CST 2018 (using threaded interrupts)

[   98.682947] PKCS#7 signature not signed with a trusted key

[   98.693213] PKCS#7 signature not signed with a trusted key

[   98.694008] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms  415.27  Thu Dec 20 17:06:08 CST 2018

[   98.784287] PKCS#7 signature not signed with a trusted key

[   98.793090] PKCS#7 signature not signed with a trusted key

[   98.793562] PKCS#7 signature not signed with a trusted key

[   98.795220] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver

[   98.795222] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 1

[   98.893338] PKCS#7 signature not signed with a trusted key

[   98.902801] PKCS#7 signature not signed with a trusted key

[   98.904910] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 238

[  129.503090] nvidia-uvm: Unloaded the UVM driver in 8 mode

[  129.521886] [drm] [nvidia-drm] [GPU ID 0x00000100] Unloading driver

[  129.561445] nvidia-modeset: Unloading

[  129.585510] nvidia-nvlink: Unregistered the Nvlink Core, major device number 241

[  129.614159] bbswitch: disabling discrete graphics

[  129.633411] pci_raw_set_power_state: 25 callbacks suppressed

[  129.633414] pci 0000:01:00.0: Refused to change power state, currently in D0





drivers nvidia bumblebee dmesg






share























  • A guy in github.com/matthieugras/Prime-Ubuntu-18.04/issues/8 says that "PKCS#7 signature not signed with a trusted key" simply means that I am using a proprietary driver. unix.stackexchange.com/questions/118116/… What do you think?, I am worried if this warnings are the preamble of something nasty.

    – David Davalos
    1 min ago
















0












0








0








The error appears explicitly when launching the nvidia card using bumblebee, and when realtek driver is launched. And I remember correctly, also with the wifi driver. I have no strange behaviors with the machine, it seems to work well. I downgraded the driver and the kernel several times and the error persist. Currently I have the latest's and APT is up-to-date:



                          ./+o+-       david@turing

                  yyyyy- -yyyyyy+      OS: Ubuntu 16.04 xenial

               ://+//////-yyyyyyo      Kernel: x86_64 Linux 4.15.0-46-generic

           .++ .:/++++++/-.+sss/`      Uptime: 16m

         .:++o:  /++++++++/:--:/-      Packages: 3466

        o:+o+:++.`..```.-/oo+++++/     Shell: optirun screenfetch

       .:+o:+o/.          `+sssoo+/    Resolution: 1920x1080

  .++/+:+oo+o:`             /sssooo.   DE: XFCE

 /+++//+:`oo+o               /::--:.   WM: Compiz

 +/+o+++`o++o               ++////.   WM Theme: Ambiant-MATE

  .++.o+++oo+:`             /dddhhh.   GTK Theme: BlackMATE [GTK2]

       .+.o+oo:.          `oddhhhh+    Icon Theme: elementary-xfce-dark

        +.++o+o``-````.:ohdhhhhh+     Font: Sans 10

         `:o+++ `ohhhhhhhhyo++os:      CPU: Intel Core i7-7700HQ CPU @ 3.8GHz

           .o:`.syhhhhhhh/.oo++o`      GPU: GeForce GTX 1050 Ti

               /osyyyyyyo++ooo+++/     RAM: 3103MiB / 15906MiB

                   ````` +oo+++o:    

                          `oo++.     



With nvidia-415


I leave here the a great part of the output of dmesg:



[   11.320704] snd_hda_codec_realtek hdaudioC0D0:    mono: mono_out=0x0

[   11.320705] snd_hda_codec_realtek hdaudioC0D0:    inputs:

[   11.320706] snd_hda_codec_realtek hdaudioC0D0:      Headset Mic=0x19

[   11.320707] snd_hda_codec_realtek hdaudioC0D0:      Headphone Mic=0x1a

[   11.320708] snd_hda_codec_realtek hdaudioC0D0:      Internal Mic=0x12

[   11.348139] PKCS#7 signature not signed with a trusted key

[   11.358876] PKCS#7 signature not signed with a trusted key

[   11.359416] PKCS#7 signature not signed with a trusted key

[   11.399690] Bluetooth: hci0: Intel firmware patch completed and activated

[   11.439431] PKCS#7 signature not signed with a trusted key

[   11.447720] PKCS#7 signature not signed with a trusted key

[   11.450533] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 238

[   11.474240] media: Linux media interface: v0.10

[   11.480096] Linux video capture interface: v2.00

[   11.628784] uvcvideo: Found UVC 1.00 device Integrated Webcam (0bda:568a)

[   11.629867] uvcvideo 1-12:1.0: Entity type for entity Extension 4 was not initialized!

[   11.629886] uvcvideo 1-12:1.0: Entity type for entity Extension 7 was not initialized!

[   11.629887] uvcvideo 1-12:1.0: Entity type for entity Processing 2 was not initialized!

[   11.629888] uvcvideo 1-12:1.0: Entity type for entity Camera 1 was not initialized!

[   11.629982] input: Integrated Webcam: Integrated W as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/input/input19

[   11.630058] usbcore: registered new interface driver uvcvideo

[   11.630058] USB Video Class driver (1.1.1)

[   11.787465] input: HDA Intel PCH Headphone Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20

[   11.975100] Adding 8000508k swap on /dev/sda7.  Priority:-2 extents:1 across:8000508k FS

[   11.997623] EXT4-fs (sda9): mounted filesystem with ordered data mode. Opts: (null)

[   12.196930] audit: type=1400 audit(1552787830.489:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/cups-browsed" pid=896 comm="apparmor_parser"

[   12.197360] audit: type=1400 audit(1552787830.489:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine" pid=894 comm="apparmor_parser"

[   12.197362] audit: type=1400 audit(1552787830.489:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=894 comm="apparmor_parser"

[   12.197569] audit: type=1400 audit(1552787830.489:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/5145/usr/lib/snapd/snap-confine" pid=888 comm="apparmor_parser"

[   12.197572] audit: type=1400 audit(1552787830.489:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/5145/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=888 comm="apparmor_parser"

[   12.197950] audit: type=1400 audit(1552787830.489:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/sbin/dhclient" pid=887 comm="apparmor_parser"

[   12.197952] audit: type=1400 audit(1552787830.489:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=887 comm="apparmor_parser"

[   12.197954] audit: type=1400 audit(1552787830.489:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=887 comm="apparmor_parser"

[   12.197956] audit: type=1400 audit(1552787830.489:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/connman/scripts/dhclient-script" pid=887 comm="apparmor_parser"

[   12.198833] audit: type=1400 audit(1552787830.489:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/tcpdump" pid=921 comm="apparmor_parser"

[   12.722282] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

[   12.722283] Bluetooth: BNEP filters: protocol multicast

[   12.722286] Bluetooth: BNEP socket layer initialized

[   12.972202] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[   12.981785] hdaps: supported laptop not found!

[   12.981785] hdaps: driver init failed (ret=-19)!

[   13.031013] r8169 0000:02:00.0 enp2s0: link down

[   13.031113] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[   13.034813] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.036681] applesmc: supported laptop not found!

[   13.036682] applesmc: driver init failed (ret=-19)!

[   13.102774] acer_wmi: Acer Laptop ACPI-WMI Extras

[   13.102780] acer_wmi: No or unsupported WMI interface, unable to load

[   13.131412] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.597882] nvidia-uvm: Unloaded the UVM driver in 8 mode

[   13.611821] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.712205] [drm] [nvidia-drm] [GPU ID 0x00000100] Unloading driver

[   13.732227] nvidia-modeset: Unloading

[   13.757402] nvidia-nvlink: Unregistered the Nvlink Core, major device number 241

[   13.781284] bbswitch: disabling discrete graphics

[   15.694575] Bluetooth: RFCOMM TTY layer initialized

[   15.694579] Bluetooth: RFCOMM socket layer initialized

[   15.694582] Bluetooth: RFCOMM ver 1.11

[   18.098078] Non-volatile memory driver v1.3

[   18.934574] wlp3s0: authenticate with f8:98:b9:19:b9:0c

[   18.937159] wlp3s0: send auth to f8:98:b9:19:b9:0c (try 1/3)

[   18.939361] wlp3s0: authenticated

[   18.940022] wlp3s0: associate with f8:98:b9:19:b9:0c (try 1/3)

[   18.943841] wlp3s0: RX AssocResp from f8:98:b9:19:b9:0c (capab=0x1411 status=0 aid=5)

[   18.949994] wlp3s0: associated

[   18.985699] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready

[   19.014024] wlp3s0: Limiting TX power to 30 (30 - 0) dBm as advertised by f8:98:b9:19:b9:0c

[   98.270124] bbswitch: enabling discrete graphics

[   98.568294] PKCS#7 signature not signed with a trusted key

[   98.580196] nvidia-nvlink: Nvlink Core is being initialized, major device number 241

[   98.580508] nvidia 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=none,decodes=none:owns=none

[   98.679985] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  415.27  Thu Dec 20 17:25:03 CST 2018 (using threaded interrupts)

[   98.682947] PKCS#7 signature not signed with a trusted key

[   98.693213] PKCS#7 signature not signed with a trusted key

[   98.694008] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms  415.27  Thu Dec 20 17:06:08 CST 2018

[   98.784287] PKCS#7 signature not signed with a trusted key

[   98.793090] PKCS#7 signature not signed with a trusted key

[   98.793562] PKCS#7 signature not signed with a trusted key

[   98.795220] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver

[   98.795222] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 1

[   98.893338] PKCS#7 signature not signed with a trusted key

[   98.902801] PKCS#7 signature not signed with a trusted key

[   98.904910] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 238

[  129.503090] nvidia-uvm: Unloaded the UVM driver in 8 mode

[  129.521886] [drm] [nvidia-drm] [GPU ID 0x00000100] Unloading driver

[  129.561445] nvidia-modeset: Unloading

[  129.585510] nvidia-nvlink: Unregistered the Nvlink Core, major device number 241

[  129.614159] bbswitch: disabling discrete graphics

[  129.633411] pci_raw_set_power_state: 25 callbacks suppressed

[  129.633414] pci 0000:01:00.0: Refused to change power state, currently in D0





drivers nvidia bumblebee dmesg






share














The error appears explicitly when launching the nvidia card using bumblebee, and when realtek driver is launched. And I remember correctly, also with the wifi driver. I have no strange behaviors with the machine, it seems to work well. I downgraded the driver and the kernel several times and the error persist. Currently I have the latest's and APT is up-to-date:



                          ./+o+-       david@turing

                  yyyyy- -yyyyyy+      OS: Ubuntu 16.04 xenial

               ://+//////-yyyyyyo      Kernel: x86_64 Linux 4.15.0-46-generic

           .++ .:/++++++/-.+sss/`      Uptime: 16m

         .:++o:  /++++++++/:--:/-      Packages: 3466

        o:+o+:++.`..```.-/oo+++++/     Shell: optirun screenfetch

       .:+o:+o/.          `+sssoo+/    Resolution: 1920x1080

  .++/+:+oo+o:`             /sssooo.   DE: XFCE

 /+++//+:`oo+o               /::--:.   WM: Compiz

 +/+o+++`o++o               ++////.   WM Theme: Ambiant-MATE

  .++.o+++oo+:`             /dddhhh.   GTK Theme: BlackMATE [GTK2]

       .+.o+oo:.          `oddhhhh+    Icon Theme: elementary-xfce-dark

        +.++o+o``-````.:ohdhhhhh+     Font: Sans 10

         `:o+++ `ohhhhhhhhyo++os:      CPU: Intel Core i7-7700HQ CPU @ 3.8GHz

           .o:`.syhhhhhhh/.oo++o`      GPU: GeForce GTX 1050 Ti

               /osyyyyyyo++ooo+++/     RAM: 3103MiB / 15906MiB

                   ````` +oo+++o:    

                          `oo++.     



With nvidia-415


I leave here the a great part of the output of dmesg:



[   11.320704] snd_hda_codec_realtek hdaudioC0D0:    mono: mono_out=0x0

[   11.320705] snd_hda_codec_realtek hdaudioC0D0:    inputs:

[   11.320706] snd_hda_codec_realtek hdaudioC0D0:      Headset Mic=0x19

[   11.320707] snd_hda_codec_realtek hdaudioC0D0:      Headphone Mic=0x1a

[   11.320708] snd_hda_codec_realtek hdaudioC0D0:      Internal Mic=0x12

[   11.348139] PKCS#7 signature not signed with a trusted key

[   11.358876] PKCS#7 signature not signed with a trusted key

[   11.359416] PKCS#7 signature not signed with a trusted key

[   11.399690] Bluetooth: hci0: Intel firmware patch completed and activated

[   11.439431] PKCS#7 signature not signed with a trusted key

[   11.447720] PKCS#7 signature not signed with a trusted key

[   11.450533] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 238

[   11.474240] media: Linux media interface: v0.10

[   11.480096] Linux video capture interface: v2.00

[   11.628784] uvcvideo: Found UVC 1.00 device Integrated Webcam (0bda:568a)

[   11.629867] uvcvideo 1-12:1.0: Entity type for entity Extension 4 was not initialized!

[   11.629886] uvcvideo 1-12:1.0: Entity type for entity Extension 7 was not initialized!

[   11.629887] uvcvideo 1-12:1.0: Entity type for entity Processing 2 was not initialized!

[   11.629888] uvcvideo 1-12:1.0: Entity type for entity Camera 1 was not initialized!

[   11.629982] input: Integrated Webcam: Integrated W as /devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/input/input19

[   11.630058] usbcore: registered new interface driver uvcvideo

[   11.630058] USB Video Class driver (1.1.1)

[   11.787465] input: HDA Intel PCH Headphone Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input20

[   11.975100] Adding 8000508k swap on /dev/sda7.  Priority:-2 extents:1 across:8000508k FS

[   11.997623] EXT4-fs (sda9): mounted filesystem with ordered data mode. Opts: (null)

[   12.196930] audit: type=1400 audit(1552787830.489:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/cups-browsed" pid=896 comm="apparmor_parser"

[   12.197360] audit: type=1400 audit(1552787830.489:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine" pid=894 comm="apparmor_parser"

[   12.197362] audit: type=1400 audit(1552787830.489:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=894 comm="apparmor_parser"

[   12.197569] audit: type=1400 audit(1552787830.489:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/5145/usr/lib/snapd/snap-confine" pid=888 comm="apparmor_parser"

[   12.197572] audit: type=1400 audit(1552787830.489:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/5145/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" pid=888 comm="apparmor_parser"

[   12.197950] audit: type=1400 audit(1552787830.489:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/sbin/dhclient" pid=887 comm="apparmor_parser"

[   12.197952] audit: type=1400 audit(1552787830.489:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=887 comm="apparmor_parser"

[   12.197954] audit: type=1400 audit(1552787830.489:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=887 comm="apparmor_parser"

[   12.197956] audit: type=1400 audit(1552787830.489:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/connman/scripts/dhclient-script" pid=887 comm="apparmor_parser"

[   12.198833] audit: type=1400 audit(1552787830.489:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/tcpdump" pid=921 comm="apparmor_parser"

[   12.722282] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

[   12.722283] Bluetooth: BNEP filters: protocol multicast

[   12.722286] Bluetooth: BNEP socket layer initialized

[   12.972202] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[   12.981785] hdaps: supported laptop not found!

[   12.981785] hdaps: driver init failed (ret=-19)!

[   13.031013] r8169 0000:02:00.0 enp2s0: link down

[   13.031113] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready

[   13.034813] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.036681] applesmc: supported laptop not found!

[   13.036682] applesmc: driver init failed (ret=-19)!

[   13.102774] acer_wmi: Acer Laptop ACPI-WMI Extras

[   13.102780] acer_wmi: No or unsupported WMI interface, unable to load

[   13.131412] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.597882] nvidia-uvm: Unloaded the UVM driver in 8 mode

[   13.611821] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

[   13.712205] [drm] [nvidia-drm] [GPU ID 0x00000100] Unloading driver

[   13.732227] nvidia-modeset: Unloading

[   13.757402] nvidia-nvlink: Unregistered the Nvlink Core, major device number 241

[   13.781284] bbswitch: disabling discrete graphics

[   15.694575] Bluetooth: RFCOMM TTY layer initialized

[   15.694579] Bluetooth: RFCOMM socket layer initialized

[   15.694582] Bluetooth: RFCOMM ver 1.11

[   18.098078] Non-volatile memory driver v1.3

[   18.934574] wlp3s0: authenticate with f8:98:b9:19:b9:0c

[   18.937159] wlp3s0: send auth to f8:98:b9:19:b9:0c (try 1/3)

[   18.939361] wlp3s0: authenticated

[   18.940022] wlp3s0: associate with f8:98:b9:19:b9:0c (try 1/3)

[   18.943841] wlp3s0: RX AssocResp from f8:98:b9:19:b9:0c (capab=0x1411 status=0 aid=5)

[   18.949994] wlp3s0: associated

[   18.985699] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready

[   19.014024] wlp3s0: Limiting TX power to 30 (30 - 0) dBm as advertised by f8:98:b9:19:b9:0c

[   98.270124] bbswitch: enabling discrete graphics

[   98.568294] PKCS#7 signature not signed with a trusted key

[   98.580196] nvidia-nvlink: Nvlink Core is being initialized, major device number 241

[   98.580508] nvidia 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=none,decodes=none:owns=none

[   98.679985] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  415.27  Thu Dec 20 17:25:03 CST 2018 (using threaded interrupts)

[   98.682947] PKCS#7 signature not signed with a trusted key

[   98.693213] PKCS#7 signature not signed with a trusted key

[   98.694008] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms  415.27  Thu Dec 20 17:06:08 CST 2018

[   98.784287] PKCS#7 signature not signed with a trusted key

[   98.793090] PKCS#7 signature not signed with a trusted key

[   98.793562] PKCS#7 signature not signed with a trusted key

[   98.795220] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver

[   98.795222] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 1

[   98.893338] PKCS#7 signature not signed with a trusted key

[   98.902801] PKCS#7 signature not signed with a trusted key

[   98.904910] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 238

[  129.503090] nvidia-uvm: Unloaded the UVM driver in 8 mode

[  129.521886] [drm] [nvidia-drm] [GPU ID 0x00000100] Unloading driver

[  129.561445] nvidia-modeset: Unloading

[  129.585510] nvidia-nvlink: Unregistered the Nvlink Core, major device number 241

[  129.614159] bbswitch: disabling discrete graphics

[  129.633411] pci_raw_set_power_state: 25 callbacks suppressed

[  129.633414] pci 0000:01:00.0: Refused to change power state, currently in D0





drivers nvidia bumblebee dmesg




drivers nvidia bumblebee dmesg





share












share










share



share










asked 3 mins ago









David DavalosDavid Davalos

62




62













  • A guy in github.com/matthieugras/Prime-Ubuntu-18.04/issues/8 says that "PKCS#7 signature not signed with a trusted key" simply means that I am using a proprietary driver. unix.stackexchange.com/questions/118116/… What do you think?, I am worried if this warnings are the preamble of something nasty.

    – David Davalos
    1 min ago





















  • A guy in github.com/matthieugras/Prime-Ubuntu-18.04/issues/8 says that "PKCS#7 signature not signed with a trusted key" simply means that I am using a proprietary driver. unix.stackexchange.com/questions/118116/… What do you think?, I am worried if this warnings are the preamble of something nasty.

    – David Davalos
    1 min ago



















A guy in github.com/matthieugras/Prime-Ubuntu-18.04/issues/8 says that "PKCS#7 signature not signed with a trusted key" simply means that I am using a proprietary driver. unix.stackexchange.com/questions/118116/… What do you think?, I am worried if this warnings are the preamble of something nasty.

– David Davalos
1 min ago







A guy in github.com/matthieugras/Prime-Ubuntu-18.04/issues/8 says that "PKCS#7 signature not signed with a trusted key" simply means that I am using a proprietary driver. unix.stackexchange.com/questions/118116/… What do you think?, I am worried if this warnings are the preamble of something nasty.

– David Davalos
1 min ago












0






active

oldest

votes











Your Answer








StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "89"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});














draft saved

draft discarded


















StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1126296%2fan-apparent-random-pattern-of-pkcs7-errors-in-dmesg%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown

























0






active

oldest

votes








0






active

oldest

votes









active

oldest

votes






active

oldest

votes
















draft saved

draft discarded




















































Thanks for contributing an answer to Ask Ubuntu!


  • Please be sure to answer the question. Provide details and share your research!

But avoid …



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1126296%2fan-apparent-random-pattern-of-pkcs7-errors-in-dmesg%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







-

Popular posts from this blog

Why do type traits not work with types in namespace scope?What are POD types in C++?Why can templates only be...

Image
What does it mean to express a gate in Dirac notation? A Strange Latex Symbol How can Republicans who favour free markets, consistently express anger when they don't like the outcome of that choice? What happened to Captain America in Endgame? How to solve constants out of the internal energy equation? How can I place the product on a social media post better? Will tsunami waves travel forever if there was no land? Unexpected email from Yorkshire Bank What is the relationship between spectral sequences and obstruction theory? How can I practically buy stocks? Will a top journal at least re...
Read more

Will tsunami waves travel forever if there was no land?Why do tsunami waves begin with the water flowing away...

Image
How much cash can I safely carry into the USA and avoid civil forfeiture? Is there really no use for MD5 anymore? Is contacting this expert in the field something acceptable or would it be discourteous? How to pronounce 'C++' in Spanish How to creep the reader out with what seems like a normal person? Critique of timeline aesthetic Sci fi novel series with instant travel between planets through gates. A river runs through the gates How did Captain America manage to do this? Are Boeing 737-800’s grounded? Error message with tabularx How to make a pipeline wait for end-of-file or stop af...
Read more

Simple Scan not detecting my scanner (Brother DCP-7055W)Brother MFC-L2700DW printer can print, can't...

Image
Can someone publish a story that happened to you? Will tsunami waves travel forever if there was no land? What is the strongest case that can be made in favour of the UK regaining some control over fishing policy after Brexit? Controversial area of mathematics Packing rectangles: Does rotation ever help? Is there a way to get a compiler for the original B programming language? Using a Lyapunov function to classify stability and sketching a phase portrait Do I have an "anti-research" personality? Reducing vertical space in stackrel What does KSP mean? Pulling the rope with one hand is...
Read more