Cinnamon: Changing mouse sensitivity has no effect.

[damian101]

```

• Cinnamon 4.2.4
  
  
  
  • Daily build PPAs are not used
  
  
• Feren OS (Ubuntu)
• Nvidia PRIME (Nvidia Quadro P4000 Mobile and Intel Iris Pro P580)
• 64 bit
  ```
  Issue
  Moving the mouse sensitivity slider has no effect.
  I wanted to turn off pointer acceleration and that worked by dragging the acceleration slider to the far left. But then mouse sensitivity couldn't be adjusted. I wanted to adjust the mouse sensitivity because of that, but changing this setting has no effect at all.

Expected behaviour
Mouse sensitivity can be adjusted with the sensitivity slider.

[pyroxar]

It's working for me good.
Maybe it will be useful for you:
https://flathub.org/apps/details/org.freedesktop.Piper

[pyroxar]

Remember about this:
https://github.com/libratbag/libratbag/wiki/Installation

[icarter09]

@damian101 did the suggestion by @pyroxar help with this issue?

[damian101]

@icarter09 Depending on the Linux distribution Piper either doesn't start or can't detect any device.
It also wouldn't help with my problem anyway. My mouse only supports 1600 cpi, wich is completely fine in Windows (standard speed, acceleration off), but too slow in Cinnamon with the acceleration slider completely to the left. A working sensitivity slider could solve this.
What already solves this issue is to deactivate mouse acceleration by creating the file /usr/share/X11/xorg.conf.d/50-mouse-acceleration.conf with the follwing content:

Section "InputClass"
    Identifier "My Mouse"
    Driver "libinput"
    MatchIsPointer "yes"
    Option "AccelProfile" "flat"
    Option "AccelSpeed" "0"
EndSection

This not only leads to disabled mouse acceleration but also a mouse speed that is similar (if not identical) to the one I have in Windows. The option to deactivate and activate mouse acceleration completely with a single button in the Cinnamon mouse settings would be very helpful, Deepin desktop environment and KDE Plasma already have that option.

[icarter09]

@damian101 thanks for the update. I'll mark this a feature request. If you think this is more of a bug than a feature request, just let me know.

[damian101]

@icarter09 A sensitivity slider that doesn't do anything is a bug. I will create a new issue for the feature request I mentioned in my last comment.