Sfdwhf

I am running Ubuntu 18.04.2 LTS with the standard gdm3 display manager. I would need to adjust the mouse speed, which I can do with xinput, using the following two commands in my case:

xinput set-prop 9 287 0, 1

xinput set-prop 9 284 -0.9

The only problem is that I can't make these settings permanent after reboot. If I place them into ~/.bashrc, then they do work fine after opening a new terminal window, but I would like to achieve the same already when the desktop has started (preferable already being active at the long-in screen).

Following this thread I did try to add these commands into ~/.xsessionrc, but also to several other different locations, like: /etc/profiles, ~/.xinputrc, /etc/X11/xinit/xinitrc, or /etc/X11/xinit/xinputrc, but none of them had effect after xwindows was up.

Any suggestions directing me to the correct path would be highly appreciated!

xinput details: (unfortunately there are multiple ids with the same name "Razer Razer DeathAdder Elite", hence I have to use the id number = 9):

⎡ Virtual core pointer                       id=2    [master pointer  (3)]

⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]

⎜   ↳ Razer Razer DeathAdder Elite              id=9    [slave  pointer  (2)]

⎜   ↳ Razer Razer DeathAdder Elite              id=10   [slave  pointer  (2)]

⎜   ↳ Razer Razer Ornata Chroma                 id=13   [slave  pointer  (2)]

⎜   ↳ Razer Razer Ornata Chroma                 id=14   [slave  pointer  (2)]

⎣ Virtual core keyboard                     id=3    [master keyboard (2)]

    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]

    ↳ Power Button                              id=6    [slave  keyboard (3)]

    ↳ Power Button                              id=7    [slave  keyboard (3)]

    ↳ HD Webcam C525                            id=8    [slave  keyboard (3)]

    ↳ Razer Razer DeathAdder Elite              id=11   [slave  keyboard (3)]

    ↳ Razer Razer Ornata Chroma                 id=12   [slave  keyboard (3)]

    ↳ Razer Razer DeathAdder Elite              id=15   [slave  keyboard (3)]

    ↳ Razer Razer Ornata Chroma                 id=16   [slave  keyboard (3)]

xinput list-props 9 output, highlighting the two relevant ones:

    ...

    libinput Accel Speed (284):   -0.900000

    libinput Accel Speed Default (285): 0.000000

    libinput Accel Profiles Available (286):    1, 1

    libinput Accel Profile Enabled (287): 0, 1

    libinput Accel Profile Enabled Default (288):   1, 0

    ...

Option 1:

Edit /usr/share/X11/xorg.conf.d/40-libinput.conf

And add there 2 lines to the first section before EndSection:

Option "AccelProfile" "flat"

Option "AccelSpeed" "-0.9"

Like this

Section "InputClass"

    Identifier "libinput pointer catchall"

    MatchIsPointer "on"

    MatchDevicePath "/dev/input/event*"

    Driver "libinput"

    Option "AccelProfile" "flat"

    Option "AccelSpeed" "-0.9"

 EndSection

Option 2:

Use evdev instead of libinput.

Option 3:

Add the 2 commands into "Startup Applications"

Answer:

• Hit the "Windows" key


• Type "Start" and click the "Startup Applications Preferences" icon.


• In the "Startup Applications Preferences" window, click the "Add" button.


• Enter a "Name" in the name field


• Enter "xinput set-prop 9 287 0, 1" in the "Command" field


• Give it a brief description in the "Description" field


• Click "Add"


• Repeat the above five (5) steps for the other command.


• Alternatively, chain both commands into "xinput set-prop 9 287 0, 1 && xinput set-prop 9 284 -0.9" and enter that in the "Command" field.

I've found this approach both clean and effective for my touchpad, and it should work for the mouse as well. Best of luck.