Bug 457217

Summary:	On X11, disabling the touchpad also disables the trackpoint on Lenovo Thinkpad
Product:	[Applications] systemsettings	Reporter:	tim
Component:	kcm_touchpad	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	REPORTED ---
Severity:	normal	CC:	nate
Priority:	NOR	Keywords:	X11-only
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Mageia RPMs
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=341378
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description tim 2022-07-27 19:05:21 UTC

SUMMARY

The touchpad is very sensitive, its near impossible to use the trackpoint without brushing and activating the touchpad repeatedly, which always overrides the trackpoint causing random behaviour (see #345935) . To cure this the touchpad must be disabled, however the "Disable touchpad" option in system settings will disable both the touchpad and the trackpoint. 

STEPS TO REPRODUCE
1.  Go to system settings and disable touchpad


OBSERVED RESULT
Both touchpad and trackpoint stop working.

EXPECTED RESULT
Only the touchpad should stop working.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma:  Mageia 8
(available in About System)
KDE Plasma Version:  5.20.4
KDE Frameworks Version: 5.76.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION

xinput at the command line reports the following pointer devices:

 Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ Synaptics TM3203-003                      id=11   [slave  pointer  (2)]
⎜   ↳ Wacom HID 5115 Pen stylus                 id=12   [slave  pointer  (2)]
⎜   ↳ Wacom HID 5115 Finger touch               id=13   [slave  pointer  (2)]
⎜   ↳ TPPS/2 IBM TrackPoint                     id=19   [slave  pointer  (2)]
⎜   ↳ Wacom HID 5115 Pen eraser                 id=20   [slave  pointer  (2)]

If I execute:

xinput float 11

the touchpad will be disabled while the trackpoint continues to function, so the devices can be independently controlled but the plasma system settings must be mis-identifying the trackpoint as a touchpad device and disabling both.

Comment 1 Nate Graham 2022-07-27 19:26:06 UTC

Cannot reproduce on Wayland. If you're on X11, can you try it out on Wayland and see if it works there?

Comment 2 tim 2022-07-27 20:02:16 UTC

The problem doesn't seem to happen under wayland, however wayland was a mish-mash of font and icon sizes on my high density display, X11 is consistent, so not an option for a permanent switch.

Comment 3 Nate Graham 2022-07-29 14:54:24 UTC

That's interesting, most people say the opposite.

I suspect it's caused by using a mishmash of scaling settings across different apps and System Settings pages, rather than using the single scaling slider on the Display & Monitor page. Try only using that and seeing if it helps.

Comment 4 TraceyC 2025-02-24 17:59:16 UTC

Adding the x11-only keyword