https://bugs.kde.org/show_bug.cgi?id=444303
Bug ID: 444303
Summary: Conflicting information about monitor refresh rate
Product: kwin
Version: 5.23.1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-drm
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 142806
--> https://bugs.kde.org/attachment.cgi?id=142806&action=edit
xrandr and drm_info output
SUMMARY
Two monitor setup:
1) 1440p@144Hz with FreeSync
2) 1080p@60Hz
According to VRRTest, the primary monitor does indeed run at 144Hz and FreeSync
is enabled as well.
When I check wayland-info or xrandr, that monitor is shown to be running at
59.951 and 59.91Hz, respectively. Similarly, mpv does show that the display fps
are 59.951.
On the other hand, drm_info shows a mode titled "[email protected] driver phsync
nvsync" and a mode titled "[email protected] preferred driver phsync nvsync".
Something doesn't really add up here.
STEPS TO REPRODUCE
1. run "xrandr"
2. run "wayland-info"
3. run "drm_info"
4. run "kscreen-doctor -o"
5. check display configuration
6. compare reported values for display refresh rate
OBSERVED RESULT
The refresh rate varies across different information sources.
EXPECTED RESULT
The information across those different sources should align.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: EndeavourOS, 5.14.14-arch1-1
(available in About System)
KDE Plasma Version: 5.23.1
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
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