Created attachment 140620 [details] touchpad settings screenshot SUMMARY After having upgraded to Plasma 5.22.4, the touchpad settings report "no touchpad found". My touchpad work fine, but I can't tweak it with the control panel. STEPS TO REPRODUCE 1. Update to Plasma 5.22.4 2. Open Touchpad in System Settings OBSERVED RESULT "No touchpad found" even through touchpad work fine EXPECTED RESULT I can tweak touchpad settings SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.12.9 (available in About System) KDE Plasma Version: 5.22.4 KDE Frameworks Version: 5.84.0 Qt Version: 5.15.19 ADDITIONAL INFORMATION
What distro are you using? Do you have the libinput drivers installed in addition to the synaptics ones?
NixOS unstable services.xserver.libinput.enable = mkDefault true; However synaptics drivers should not be installed And on 5.21 the config menu still worked
Thanks for the info. Cannot reproduce.
I am having the same problem also on nixos. kcm-touchpad-list-devices lists the touchpad properly but the settings application does not. It still works on NixOS 21.05 which uses the same LTS kernel version. I am not sure which library update broke it and a hint would be appreciated. kcm-touchpad-list-devices Name: Virtual core pointer Type: unknown Use: Pointer Name: Virtual core keyboard Type: unknown Use: Keyboard Name: Virtual core XTEST pointer Type: unknown Use: Extension Pointer Name: Virtual core XTEST keyboard Type: unknown Use: Extension Keyboard Name: Power Button Type: KEYBOARD Use: Extension Keyboard Name: Video Bus Type: KEYBOARD Use: Extension Keyboard Name: Sleep Button Type: KEYBOARD Use: Extension Keyboard Name: AT Translated Set 2 keyboard Type: KEYBOARD Use: Extension Keyboard Name: ThinkPad Extra Buttons Type: KEYBOARD Use: Extension Keyboard Name: ETPS/2 Elantech TrackPoint Type: MOUSE Use: Extension Pointer Name: ETPS/2 Elantech Touchpad Type: TOUCHPAD Use: Extension Pointer Name: Integrated Camera: Integrated C Type: KEYBOARD Use: Extension Keyboard Operating System: NixOS 21.11 KDE Plasma Version: 5.22.4 KDE Frameworks Version: 5.84.0 Qt Version: 5.15.2 Kernel Version: 5.14.3 (64-bit) Graphics Platform: X11
For me this is fixed in the latest nixos-unstable version. I think it might be an incompatible between the plasma and libinput version used at that point.