https://bugs.kde.org/show_bug.cgi?id=452219
S. Bryant <st...@bawue.de> changed:
What |Removed |Added
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CC| |st...@bawue.de
--- Comment #12 from S. Bryant <st...@bawue.de> ---
I'm seeing this problem since an update yesterday (openSUSE RPMs), which makes
me wonder why I haven't been bitten by it before. Perhaps a default setting
was changed.
System setup is a laptop (2021 HP ZBook Fury) with Intel+Nvidia graphics in
"hybrid" mode (BIOS setting). I'm using Intel as the primary, so the external
screens connected via a Thunderbolt dock go via the Nvidia path. I have Plasma
5.25.4 and Nvidia G06 515.65.
I have the same symptoms as others. The kwin_wayland process is now always
using the CPU. Just moving the mouse around causes a large increase in CPU
usage. Screen updates are very slow, and to my eye it looks like single digit
FPS.
I note that glxgears, while slower on the Nvidia screen, still reports a fairly
high FPS. I suspect that the problem lies solely with the transfer between the
graphics cards, and that the application doesn't see this. It reports around
600FPS in glxgears, regardless of whether I use DRI_PRIME=1 or not, but as
mentioned above, it does not look like that. Both variations use a similarly
high amount of CPU.
Possibly related: with this last update, auto-blanking (after a timeout) has
stopped working, as has the wobbly windows effect.
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