SUMMARY I've tried setting a different mouse sensitivity for the touchpad (is treated as a mouse though) on my wireless couch-keyboard. Works like a charm with "xinput set-prop", but won't work when put into a xorg .conf file. In the xorg-log, it seems to be applied, but when doing a 'xinput list-props xx", it is back to the old value. When trying "startx /usr/bin/xterm", it gets applied properly and is correctly listed in list-props. So it seems that plasma is doing something that overwrites these settings after they are applied by X11. Options that are affected from my experiments are at least "AccelProfile" and "AccelSpeed", i haven't really tested other ones though. I guess the options are applied according to what is set in the mouse section of system settings - in there, there is no possibility to set separate values for different mice though. It seems there are a few other inactive bugreports that share the same origin: https://bugs.kde.org/show_bug.cgi?id=435247 https://bugs.kde.org/show_bug.cgi?id=357194 https://bugs.kde.org/show_bug.cgi?id=339743 STEPS TO REPRODUCE 1. create .conf file in "/etc/X11/xorg.conf.d" 2. Specify InputClass with AccelSpeed Option - my example: Section "InputClass" Identifier "touchpad-sens" MatchDriver "libinput" MatchIsPointer "true" MatchProduct "2.4G Receiver" Option "AccelProfile" "flat" Option "AccelSpeed" "0.3" EndSection 3. Reboot and see options not applied properly although reported as set in xorg log SOFTWARE/OS VERSIONS Linux/KDE Plasma: Archlinux Kernel 6.1.6 KDE Plasma Version: 5.26.5 KDE Frameworks Version: 5.102.0 Qt Version: 5.15.8 ADDITIONAL INFORMATION Don't know if it matters, but i use SDDM and X11 session, haven't tried on plasma-wayland yet though. Also, i'm not sure if this is a plasmashell but or maybe kwin?
Why can't you use the mouse settings page in System Settings, out of curiosity? Does it not offer the settings you need?
(In reply to Nate Graham from comment #1) > Does it not offer the settings you need? I guess you could say so, yes. ^^ Changing the mouse-settings in ksystemsettings affects all attached mice equally/offers no option to change them individually. Maybe i should have clarified that i want to change the sensitivity of the couch-keyboard only, while leaving the sens of the desktop mouse as is - sorry for that confusion.
You can do that too; mouse settings are per-mouse--at least on Wayland. I can't remember if they're per-mouse on X11 too.
I knew i should have checked on wayland, too! It's not possible on X11 though. Well, if it is already implemented in wayland i guess the main question is how much effort it would be to port it over (i don't know how similar the codepaths for wayland and X11 are in that regard?). If it's a lot of work and already implemented in the futureproof version, i'd almost say it's too much of a niche usecase to put too much effort into it, isn't it?
I would be inclined to say the same thing, yeah. Thanks for understanding!