https://bugs.kde.org/show_bug.cgi?id=428467
Bug ID: 428467
Summary: Plasma freezes
Product: plasmashell
Version: 5.20.2
Platform: Other
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: k...@davidedmundson.co.uk
Reporter: krzmb...@gmail.com
CC: plasma-b...@kde.org
Target Milestone: 1.0
SUMMARY
The complete UI freezes and the computer has to be reset by holding down the
power button. No keyboard or mouse input seems to work (so switching to a
different TTY is not possible either).
STEPS TO REPRODUCE
I have not yet found a way to reproduce this. It happens a couple of times
every day though. It seems like using KDE-specific windows (e.g. widgets, audo
volume settings, ...) increases the likelihood of it happening, but this is of
course rather vague.
SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.20
KDE Plasma Version: 5.20.2
KDE Frameworks Version: 5.75.0
Qt Version: 5.15.0
Kernel Version: 5.4.0-52-generic
OS Type: 64-bit
Processors: 8 × Intel® Core™ i7-4770 CPU @ 3.40GHz
Memory: 7,7 GiB of RAM
Graphics Processor: NVE4
ADDITIONAL INFORMATION
I used to run KDE Neon on a laptop without ever seeing such an issue. I should
note though that the version never ran the 5.20 version. Instead it was running
5.19 when I used it for the last time.
Therefore my suspicion is that this might be a bug that was introduced in 5.20.
Another possibility could also be that the problem is hardware-related as the
computer I am seeing the issues on is not the beforementioned laptop.
The freeze is happening on a setup in which I am using 2 monitors (2x
1920x1080). One is connected via HDMI and one via DVI.
IMPORTANT
When the freeze is happening, it seems to really only be the UI that freezes.
If I e.g. have a music player running (Clementine) while this happens, the
music continues to play.
Furthermore the mouse input freezes only after everything else. So usually I
notice that the UI seems to be frozen but I am still able to move my mouse for
a few seconds. The mouse input seems to also freeze as soon as the cursor
would cross the border of my 2 monitors (e.g. it freezes before switching to
the other screen).
QUESTION
What can I do to try to help find out what the cause of this freeze is? Are
there some log files that I should inspect (before and) after this has happened
again?
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