https://bugs.kde.org/show_bug.cgi?id=470814
Bug ID: 470814
Summary: Pen input from Wacom Intuos BT causes System to freeze
(kwin_wayland / kwin_libinput)
Classification: Plasma
Product: kwin
Version: 5.27.5
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: libinput
Assignee: kwin-bugs-n...@kde.org
Reporter: simon.gra...@pm.me
Target Milestone: ---
Created attachment 159552
--> https://bugs.kde.org/attachment.cgi?id=159552&action=edit
a libinput record of the input data leading to the hang
SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***
STEPS TO REPRODUCE
1. connect the Wacom Intuos BT device via bluetooth
2. hover the pen over the pad, the cursor should move around as expected
3. touch the pad and move around for 2-3 seconds, the system will freeze.
OBSERVED RESULT
CPU usage rises (fan speed ramps up), at the same time the system will hang,
requiring a sys-rq E to recover.
journalctl shows problems with event handling:
kwin_wayland: kwin_libinput: Libinput: client bug: timer proxout: scheduled
expiry is in the past (-107324ms), your system is too slow
kwin_wayland: kwin_libinput: Libinput: libinput bug: timer proxout: offset more
than 5s, now 109583 expire 1271308272
kernel: sched: RT throttling activated
EXPECTED RESULT
input should work without delay or freezing.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.106.0
Qt Version: 5.15.9
Kernel Version: 6.3.6-arch1-1 (64-bit)
Graphics Platform: Wayland
ADDITIONAL INFORMATION
I've recorded some input using libinput record, although replaying never
reproduces the issue (system hang), I only see the input and a discontinuity in
the recording at the point when the system froze.
--
You are receiving this mail because:
You are watching all bug changes.
