SUMMARY. Modifying settings for touchpad using KDE system settings have no effect on the touchpad. STEPS TO REPRODUCE 1. Start KDE system touchpad management window 2a. xinput --list-props 19 | grep Accel 2b. xinput --list-props 13 | grep Accel 3. Try to change things in GUI 4. Notice most things are greyed out, mouse seems unaffected on the acceleration. 5a. xinput --list-props 19 | grep Accel 5b. xinput --list-props 13 | grep Accel OBSERVED RESULT device 19 settings change, but touchpad behavior does not. EXPECTED RESULT Mouse sensitivity/acceleration changes. SOFTWARE/OS VERSIONS Operating System: Kubuntu 19.04 KDE Plasma Version: 5.15.4 KDE Frameworks Version: 5.56.0 Qt Version: 5.12.2 Kernel Version: 5.0.0-29-generic OS Type: 64-bit Hardware: Laptop = HP Zbook X360 G5 ADDITIONAL INFORMATION There are TWO Touchpads listed when one runs "xinput --list --short" $ xinput --list --short ⎡ Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ SynPS/2 Synaptics TouchPad id=19 [slave pointer (2)] ⎜ ↳ SYNA307B:00 06CB:CD46 Touchpad id=13 [slave pointer (2)] ⎜ ↳ Wacom HID 48DD Pen stylus id=14 [slave pointer (2)] ⎜ ↳ Wacom HID 48DD Pen eraser id=15 [slave pointer (2)] ⎜ ↳ Wacom HID 48DD Finger id=22 [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)] ↳ Video Bus id=7 [slave keyboard (3)] ↳ Video Bus id=8 [slave keyboard (3)] ↳ Power Button id=9 [slave keyboard (3)] ↳ Sleep Button id=10 [slave keyboard (3)] ↳ HP HD Camera: HP HD Camera id=11 [slave keyboard (3)] ↳ HP HD Camera: HP IR Camera id=12 [slave keyboard (3)] ↳ Intel HID events id=16 [slave keyboard (3)] ↳ Intel HID 5 button array id=17 [slave keyboard (3)] ↳ AT Translated Set 2 keyboard id=18 [slave keyboard (3)] ↳ HP Wireless hotkeys id=20 [slave keyboard (3)] ↳ HP WMI hotkeys id=21 [slave keyboard (3)] ↳ HP Active Pen G2 Keyboard id=23 [slave keyboard (3)] It appears that the touchpad modification system in KDE only changes id=19. But ID=13 is the one that affects the touchpad.
I may have to retract this ticket. As I was getting ready to add diagnostics I did several suspend and resumes and now modifying the touchpad settings with the KDE system settings did affect mouse acceleration although the ID changes from 14 to 13. xinput ⎡ Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ SYNA307B:00 06CB:CD46 Touchpad id=14 [slave pointer (2)] ⎜ ↳ Wacom HID 48DD Pen stylus id=15 [slave pointer (2)] ⎜ ↳ Wacom HID 48DD Pen eraser id=18 [slave pointer (2)] ⎜ ↳ Wacom HID 48DD Finger id=22 [slave pointer (2)] ⎜ ↳ SynPS/2 Synaptics TouchPad id=19 [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)] ↳ Video Bus id=7 [slave keyboard (3)] ↳ Video Bus id=8 [slave keyboard (3)] ↳ Power Button id=9 [slave keyboard (3)] ↳ Sleep Button id=10 [slave keyboard (3)] ↳ HP HD Camera: HP HD Camera id=11 [slave keyboard (3)] ↳ HP HD Camera: HP IR Camera id=12 [slave keyboard (3)] ↳ Intel HID events id=16 [slave keyboard (3)] ↳ Intel HID 5 button array id=17 [slave keyboard (3)] ↳ HP Wireless hotkeys id=20 [slave keyboard (3)] ↳ HP WMI hotkeys id=21 [slave keyboard (3)] ↳ AT Translated Set 2 keyboard id=13 [slave keyboard (3)] ↳ HP Active Pen G2 Keyboard id=23 [slave keyboard (3)] $ xinput --list-props 14 | grep Accel libinput Accel Speed (369): 1.000000 libinput Accel Speed Default (370): 0.000000 (modify settings in KDE system settings) $ xinput --list-props 14 | grep Accel libinput Accel Speed (369): 0.888476 libinput Accel Speed Default (370): 0.000000 Sorry - will close as "WORKSFORME"