https://bugs.kde.org/show_bug.cgi?id=497041
Bug ID: 497041
Summary: Very high memory usage while using external monitor
connected directly to the laptop
Classification: Plasma
Product: kwin
Version: 6.2.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: kwin-bugs-n...@kde.org
Reporter: orza...@gmail.com
Target Milestone: ---
Created attachment 176346
--> https://bugs.kde.org/attachment.cgi?id=176346&action=edit
htop output
SUMMARY
I'm using EndeavourOS with KDE Plasma and Wayland Lenovo Thinkbook 16p Gen 4
with RTX 4060 Mobile as a discrete graphics card. I have two displays connected
to the laptop via Lenovo USB-C dock Gen 2 and the third one is connected
directly to the laptop. Displays connected via dock are both 60Hz while the
third is capable of 144Hz(although I need to have it set to 120Hz otherwise
this screen is blank despite system telling me it's on and working). The issue
is when I play some videos (be it Youtube videos or google meetings)
kwin_wayland process keeps eating more and more memory until it eats too much
and gets killed by oom killer. Then I get logged out.
What's more, during this memory hogging kwin_wayland spawns a lot of background
processes.(screen from the htop in attachment).
I do not expect the issue to be "not enough resources" as I have i9-13900H with
32GBs of ram.
Today I've run a test where I was not putting any videos on main screen and
after over 9 hours RAM usage was at about 10GBs of ram(it's normal based on
workload).
STEPS TO REPRODUCE
1. Connect display to the port on the laptop
2. Run some videos on it
3. Watch as kwin_wayland gets it eat-as-much-as-you-want day.
OBSERVED RESULT
Ram usage on always-increasing level(memory leak?).
EXPECTED RESULT
RAM usage on reasonable level.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: EndeavourOS
KDE Plasma Version: 6.2.4
KDE Frameworks Version: 6.8.0
Qt Version: 6.8.0
Nvidia driver installed: nvidia-dkms version 565.57.01-2
Kernel version: 6.12.1-arch1-1
ADDITIONAL INFORMATION
I'm more than happy to provide any more necessary info regarding this issue.
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