https://bugs.kde.org/show_bug.cgi?id=505028
Bug ID: 505028
Summary: lots of “Page flip failed” warnings in journal when
mpv plays video fullscreen
Classification: Plasma
Product: kwin
Version First 6.3.5
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-drm
Assignee: kwin-bugs-n...@kde.org
Reporter: flupp+bugs.kde....@mailbox.org
Target Milestone: ---
When playing a video fullscreen using mpv, a lot instances of the following
warning appear in the journal:
> kwin_wayland[1182]: kwin_wayland_drm: Page flip failed: Invalid argument
The frequency of warnings correlates with the video frame rate. (This can
easily be observed by changing the playback speed using {, [, ], or }.) The
maximum warning frequency seems to be the refresh rate of the monitor where the
video is shown. When playing fullscreen videos on several monitors, the warning
frequencies add up. In the worst case, I get 135 warnings per second when
playing a video fullscreen on a 60Hz monitor in parallel to a video fullscreen
on a 75Hz monitor. (“sort | uniq -c” helps determining the warning frequency.)
Besides the warnings I do not notice any problems.
The problem does not occur when not in fullscreen mode. Also, I cannot cannot
reproduce the problem with VLC, MPlayer and Dragon Player.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0
Kernel Version: 6.14.7-arch2-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-4790 CPU @ 3.60GHz
Memory: 23.4 GiB of RAM
Graphics Processor: VERDE
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