https://bugs.kde.org/show_bug.cgi?id=472280
Bug ID: 472280
Summary: libkscreen regression between 5.27.5 and 5.27.6:
custom xorg configuration does not work anymore
Classification: Plasma
Product: KScreen
Version: 5.27.6
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: d...@duradsl.duckdns.org
Target Milestone: ---
Created attachment 160302
--> https://bugs.kde.org/attachment.cgi?id=160302&action=edit
xorg.conf
The only real change between libkscreen 5.27.5 and 5.27.6 is:
https://invent.kde.org/plasma/libkscreen/-/commit/e23ccb5063e1ae70c6eae9df4875dbd9fe4e72e9
Seems pretty harmless at first glance, but it has big consequences on my
unusual setup!
My X.org setup consists of two independents screen. The first screen
DISPLAY=:0.0 has two monitors: BDM4065 and L22W-3, the second screen
DISPLAY=:0.1 has one monitor: SR5003. See attached xorg.conf and systemsettings
screenshots.
KDE5 is launched on first screen (DISPLAY=:0.0).
Like xrandr libkscreen 5.27.5 sees first two monitors (expected behaviour).
libkscreen 5.27.6 includes the third one. See attached screenshots and xrandr
outputs.
I've added custom modelines to SR5003 for precise refresh rates when watching
movies. The problem is that I can't use them anymore with libkscreen 5.27.6 the
refresh rate is always 60hz. With 5.27.5 (or 5.27.6 with above commit reverted)
modelines are working as expected. Note that the custom modeline is selected
with xrandr (xrandr --output HDMI-0 --mode 0x37a --screen 1).
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