https://bugs.kde.org/show_bug.cgi?id=483662
Bug ID: 483662
Summary: force-dvi mode for KWin on Wayland
Classification: Plasma
Product: kwin
Version: 6.0.2
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: xrandr
Assignee: kwin-bugs-n...@kde.org
Reporter: alphaj...@tuta.io
Target Milestone: ---
Created attachment 167255
--> https://bugs.kde.org/attachment.cgi?id=167255&action=edit
Top: HDMI just connected, `audio = auto`. Bottom: `audio = force-dvi`
SUMMARY
I have a TV with HDMI input. Unfortunately, computers connected with HDMI
rather than D-Sub are affected by overscan and bad colors. While overscan can
theoretically be adjusted within the TV menu, bad colors (and especially bad
text shadow) remain and make the TV not usable.
On Xorg I can simply run `xrandr --output HDMI-1 --set audio force-dvi` to fix
the issue (compare the two photos below). As a side effect, audio doesn't go
through the HDMI cable anymore, but I can live with that.
However, on Wayland and Plasma I am unable to run such command, and there seems
to be no alternative for the KWin compositor (and neither for
Wlroots/Hyprland).
How can I have Kscreen-doctor/others to set the HDMI output in DVI mode?
This is the only reason preventing me from moving to Wayland.
STEPS TO REPRODUCE
1. Connect a (dumb) TV to the computer through HDMI, observe bad colors and
overscan
2. On Xorg Plasma, run `xrandr --prop` and then `xrandr --output HDMI-1 --set
audio force-dvi`
EXPECTED RESULT
Overscan and colors are fixed
OBSERVED RESULT
xrandr does not work on Wayland, Kscreen-doctor does not have such a feature
SOFTWARE/OS VERSIONS
Linux: 6.7.9
KDE Plasma Version: 6.0.2
KDE Frameworks Version: 6.0.0
Qt Version: 6.6
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