https://bugs.kde.org/show_bug.cgi?id=503114
Bug ID: 503114
Summary: Window manager keeps forgetting my display
configuration
Classification: Plasma
Product: kwin
Version: 6.3.4
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: X11 Integration
Assignee: kwin-bugs-n...@kde.org
Reporter: drwoot...@gmail.com
Target Milestone: ---
SUMMARY
The kwin_x11 window manager (or plasmashell, not sure which) keeps forgetting
my display configuration. This has been going on with Ubuntu 24.02 then Ubuntu
24.10 win NVidia driver 565.56.1
Someone on discuss.kde.org suggest I install current Fedora since there was a
newer version of KDE which might work better.
It did, for about a week. Now I'm running current Fedora 42 with KDE Plasma
6.3.4 X11 and NVidia driver 570.133.07 and the problem is back.
I had been running Fedora for many years until last year when I thought should
install Ubuntu since that was the more widely supported distribution and
software levels were more stable.
The problem is that I set up a display configuration using X11 plasmashell with
4 displays, which works find for a while then something decides to reconfigure
my display config such that one display is disabled. Then I have to spend a
couple hours trying to figure out how to get my displays back.
My system has a RTX 4070TI Super GPU and a RTX 4070 installed. The RTX 4070 TI
Super is my main GPU which has all my displays connected to it. The RTX 4070 is
used only for AI software.
I have 4 displays connected, 2 Acer B326HK 4K displays, and Acer H213H
1920x1080 display and a USD Artist 13.2 1920x1080 drawing tablet connected. The
drawing tablet uses the HDMI port and the remaining displays are connected by
Display Port.
So, on random bootup, my 2nd 4K display is gone, does not enavble even if I
switch it off and on. It does not show up in nvidia-settings either.
I discovered that if I log in using Gnome window manager and start
nvidia-settings there, I see the second 4K display but it is 'off'. I redo my
nvidia-settings configuration to get all 4 displays running again and then redo
my Gnome dispal setup again.
Then I log out and log in to X11 plasmashell and the second 4K display is still
gone. I run nvidia-settings again and see that display is marked disabled. I
enable it anbd mess with configuration settings again to get my setup, but
something (kwin or plasmashell, don't know which) decides it wants to fight
with nvidia-settings because I start getting popups from nvidia-settings that a
display configuration can't be saved because the running X server was modified.
Finally, I get the KDE window configuration set up to match what I have in
nvidia-settings and things are fine for a while. Then something gets bored and
decides to break my config again.
I don't like gnome window manager because it's desktop is far to basic and
limited. I've used plasma X11 for years and have been happy with it until the
last few months.
It's bad enough that there's two places where display config seems to live,
wherever nvidia-settings decides to keep it besides xorg.conf and wherever KDE
decides to keep it. It's even worse because KDE keeps it's config somewhere
different that Gnome, so I end up having to fix several configs.
I tried Wayland plasma and it's just not ready for prime time. I have other
problems with that, and there's at least one person who claims that Wayland
will be work in progress with NVidia for another couple years.
STEPS TO REPRODUCE
1. I have no idea how to reproduce it, what log to look at because Linux
developers decided to move it somewhere again, and no idea what to even look at
in the log with all the noise in the log. The system just decides to randomly
decide to scrap my desktop config.
OBSERVED RESULT
Broken display config.
EXPECTED RESULT
Once I set a display config, the system should not decide to randomly change it
to something else resulting in me wasting several hours fixing it again.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.3.4
KDE Plasma Version:
KDE Frameworks Version: 6.13.10
Qt Version: 6.8.2
Nvidia driver 570.133.07
ADDITIONAL INFORMATION
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