https://bugs.kde.org/show_bug.cgi?id=496469
Matheus Castanho <mscasta...@gmail.com> changed:
What |Removed |Added
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CC| |mscasta...@gmail.com
--- Comment #68 from Matheus Castanho <mscasta...@gmail.com> ---
I also have the same issue. I'm using Fedora 41 (KDE Spin) on an Acer Nitro 5
with a discrete NVIDIA GPU. I use it with the laptop lid closed and an external
monitor plugged. This problem has been bugging me for a few weeks now, multiple
times a day. I have a system with 32GB of RAM that gets completely taken by
kwin_wayland after some time.
The workaround of unplugging the HDMI cable and plugging again seems to work.
After I plug the cable again the RAM usage drops by 10-15 GB at once.
I noticed a lot of memory seems to be allocated by the NVIDIA driver somehow. I
ran 'sudo pmap -x $(pidof kwin_wayland)' immediately before and after doing the
workaround above. When I compared both outputs, there were many (> 5000) memory
mappings labelled 'nvidiactl' that vanished after I plugged the cable back
again.
$ diff -W 200 --color=always -y ./kwin_wayland.pmap.before_unplug_plug.txt
./kwin_wayland.pmap.after_unplug_plug.txt | grep '<' | awk '{ print $6 }' |
sort | uniq -c
5 [
3 card0
1 card1
3 memfd:gdk-wayland
4 memfd:wayland-shm
5247 nvidiactl
I'll be happy to provide more information about my system or run any more
debugging commands to help diagnosing the problem if needed.
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