Bug 485287

Summary:	4 finger touchpad swipe up/down very inconsistent over time.
Product:	[KDE Neon] neon	Reporter:	freedriven <rnd>
Component:	general	Assignee:	Neon Bugs <neon-bugs>
Status:	REPORTED ---
Severity:	normal	CC:	jr, miranda, neon-bugs, oded, sitter
Priority:	NOR	Keywords:	wayland-only
Version:	unspecified
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description freedriven 2024-04-09 17:00:19 UTC

SUMMARY
4 finger touchpad swipe up/down very inconsistent over time.

STEPS TO REPRODUCE
1. Open several windows of any type.
2. Use that desktop for 5-10 min. 
3. Attempt to swipe up using 4 finger touchpad gesture, sensitivity/rate/etc has changed significantly over time, and then improves after multiple attemps.

OBSERVED RESULT
It seems this is a time sensitive bug.  Swipe up with 4 fingers works fine if done immediately after boot, or if done often (within 10s or so of a swipe). But wait some number of minutes, say 10, and 4 finger swipe up may not work at all. Using 3 finger swipe to move L/R (which works fine), then, using 4 finger swipe works as expected.  The 4 finger swipe also seems to be worse (happen sooner, and be less sensitive) if swiping while a window is in full desktop mode.

EXPECTED RESULT
Consistency when using 4 finger swipe over a period of time and using various desktop configurations.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 6.0.3
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.3

ADDITIONAL INFORMATION

Comment 1 Oded Arbel 2024-06-16 12:49:02 UTC

are you on Wayland or X11?

Comment 2 freedriven 2024-06-16 12:54:15 UTC

Wayland.

Comment 3 Oded Arbel 2024-06-16 12:55:42 UTC

It will probably be useful if you can - immediately after noticing an issue with the overview effect (4-finger swipe up) - to run this command in a terminal and attach the resulting kwin.log file:

journalctl --user SYSLOG_IDENTIFIER=kwin_wayland  -S -1m > kwin.log

Comment 4 freedriven 2024-06-16 12:56:55 UTC

Thanks, will do, soon.

Comment 5 freedriven 2024-06-17 21:19:06 UTC

So it seems, that when this 4-finger swipe problem happens, if I use the mouse to un-hide the panel to open a termnial (to run the requested command), then the 4 finger swipe works fine. Making it difficult to run the requested time when the problem is happening.

I'll try writing a script to run the command every 30s or so.

Comment 6 Oded Arbel 2024-06-18 08:48:59 UTC

(In reply to freedriven from comment #5)
> So it seems, that when this 4-finger swipe problem happens, if I use the
> mouse to un-hide the panel to open a termnial (to run the requested
> command), then the 4 finger swipe works fine. Making it difficult to run the
> requested time when the problem is happening.

That is fine - the command is to extract the log for the last minute. You don't have to execute "as it happens", only not more than a minute after it happened.

Comment 7 freedriven 2024-06-19 21:32:24 UTC

I've run it a few times after the 4 finger swipe basically stopped working. I've only gotten:
"-- No entries --"

Comment 8 Oded Arbel 2024-06-19 21:57:35 UTC

(In reply to freedriven from comment #7)
> I've run it a few times after the 4 finger swipe basically stopped working.
> I've only gotten:
> "-- No entries --"

Are you sure you are running on Wayland?

Comment 9 freedriven 2024-06-19 22:04:21 UTC

wayland is selected at login.  
Also:
loginctl shloginctl show-session "$XDG_SESSION_ID" -p Type
Type=wayland

Comment 10 Oded Arbel 2024-06-19 23:56:07 UTC

OK, on my system kwin logging is set to debug level so it is quite noisy, though higher level log messages from kwin are actually rare. Maybe you can enable debug logging and see if there's anything interesting.

Comment 11 freedriven 2024-07-19 14:52:44 UTC

I think I finally caught it.  
Output of "journalctl --user SYSLOG_IDENTIFIER=kwin_wayland  -S -5m"


Jul 19 10:46:28 Home666 kwin_wayland[1944]: This plugin does not support raise()
Jul 19 10:46:28 Home666 kwin_wayland[1944]: kwin_scene_opengl: 0x2: GL_INVALID_OPERATION in glDrawBuffers(unsupported buffer GL_BACK_LEFT)
Jul 19 10:46:28 Home666 kwin_wayland[1944]: kwin_scene_opengl: 0x2: GL_INVALID_OPERATION in glDrawBuffers(unsupported buffer GL_BACK_LEFT)
Jul 19 10:46:28 Home666 kwin_wayland[1944]: kwin_scene_opengl: 0x2: GL_INVALID_OPERATION in glDrawBuffers(unsupported buffer GL_BACK_LEFT)
Jul 19 10:46:28 Home666 kwin_wayland[1944]: kwin_scene_opengl: 0x2: GL_INVALID_OPERATION in glDrawBuffers(unsupported buffer GL_BACK_LEFT)
Jul 19 10:46:28 Home666 kwin_wayland[1944]: kwin_scene_opengl: 0x2: GL_INVALID_OPERATION in glDrawBuffers(unsupported buffer GL_BACK_LEFT)


Repeat last line about 10 times.