https://bugs.kde.org/show_bug.cgi?id=417490
Bug ID: 417490
Summary: Plasma 5.18.0 resets display XRandR scaling after
logon
Product: kwin
Version: 5.18.0
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: xrandr
Assignee: kwin-bugs-n...@kde.org
Reporter: frederick...@tsundere.moe
Target Milestone: ---
SUMMARY
Starting from Plasma 5.18.0, XRandR scaling set via SDDM DisplayCommand is
reset to 1.0 after logon.
STEPS TO REPRODUCE
1. Enable DisplayCommand in /etc/sddm.conf
2. In the display command script, use 'xrandr ... --scale 2.0' to scale a
display
Personally I scale my 1080p displays so that I can have a proper Plasma global
scaling for the 4K one:
xrandr --fb 11520x2160 \
--output DP-0 --auto --scale 2.0 --dpi 256 --panning
3840x2160+0+0 --pos 0x0 \
--output DP-3 --auto --primary --scale 1.0 --dpi 163 --panning
3840x2160+3840+0 --pos 3840x0 \
--output HDMI-0 --auto --scale 2.0 --dpi 205 --panning
3840x2160+7680+0 --pos 7680x0
OBSERVED RESULT
Scaling looks alright on SDDM login dialog, however it's disabled during the
splash screen.
EXPECTED RESULT
XRandR scaling remains untouched after logon as it did in 5.17.5
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.18.0
KDE Frameworks Version: 5.67.0
Qt Version: 5.14.1
Kernel Version: 5.5.3-zen1-1-zen
OS Type: 64-bit
ADDITIONAL INFORMATION
I'm using Nvidia proprietary driver nvidia-dkms 440.59-7
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