https://bugs.kde.org/show_bug.cgi?id=466263
Bug ID: 466263
Summary: Third monitor goes black, mouse in edge shifts the
screen to it
Classification: Plasma
Product: KScreen
Version: 5.27.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: diggel...@pm.me
Target Milestone: ---
Created attachment 156616
--> https://bugs.kde.org/attachment.cgi?id=156616&action=edit
Video of issue
SUMMARY
Recently I've been encountering an issue where my third monitor turns
off/disconnects after a while. Opening display settings shows my other two
monitors as usual, but the third monitor is disabled. Trying to enable it does
nothing, and its resolution settings only allow me to choose 640x480. Setting
it as the primary monitor turns it back on (but stuck at 640x480).
It always happens with the same monitor, which is a 144hz 1080p (BenQ ZOWIE
XL2411P).
Also, pushing my mouse into the edge of the screen causes the entire display on
all monitors to "shift". I don't know how to explain it, so I recorded and
attached a video. In the video, I can move the mouse into that outside area,
but can't do anything in there. I can't put a window there, etc. Also, it
appears to be showing a lockscreen, so I guess the time shown is precisely when
it froze lol.
Shortly after recording the video, I also noticed that plasma was reporting
~66% CPU and ~70% MEM usage in `top`. That may or may not be related.
Logging in/out and rebooting doesn't fix it. The only way to fix it is to
delete everything in `~/.local/share/kscreen/`, followed by logging out and
back in. I.e. `rm -rf ~/.local/share/kscreen/*`
STEPS TO REPRODUCE
I haven't been able to reproduce it, but it is a persistent problem. I believe
it's related to the lock screen. Sometimes (not always) when I wake the
displays, I will be presented with this bug.
OBSERVED RESULT
Third monitor disconnects, display behaves strangely
EXPECTED RESULT
Not that
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 37
KDE Plasma Version: 5.27.0
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.12-200.fc37.x86_64 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-7700K CPU @ 4.20GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1080 Ti/PCIe/SSE2
Manufacturer: MSI
Product Name: MS-7977
System Version: 1.0
ADDITIONAL INFORMATION
This is using the Nvidia proprietary driver version 525.89.02
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