https://bugs.kde.org/show_bug.cgi?id=441977
Bug ID: 441977
Summary: After cloning, kscreen does not return to original
resolution when using "Switch to laptop screen"
Product: KScreen
Version: 5.22.4
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: ho...@schirmeier.com
Target Milestone: ---
SUMMARY
When I clone my laptop screen (2560x1440) to an HDMI-connected TV (FHD), both
displays go to FHD. When disabling clone mode by using kscreen's "Switch to
laptop screen", the external display is disabled as expected, but the laptop
display stays at FHD instead of going back to 2560x1440.
This is a regression.
STEPS TO REPRODUCE
- attach external Full-HD monitor (e.g. via HDMI)
- use kscreen to "Unify outputs" (Fn+F7 on my Lenovo T460p, or using the
"Display Configuration" tray applet)
- internal monitor is now down to 1920x1080, showing the same content as the
external one
- use kscreen to "Switch to laptop screen"
OBSERVED RESULT (since Ubuntu 21.10, i.e. the kscreen 5.21.4 -> 5.22.4
transition):
- external monitor goes black
- internal monitor stays at 1920x1080
EXPECTED RESULT (seen up to and including Ubuntu 21.04, i.e. kscreen 5.21.4):
- external monitor goes black
- internal monitor returns to native resolution (2560x1440 in my case)
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Ubuntu 21.10
KDE Plasma Version: 5.22.4
KDE Frameworks Version: 5.85.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
Ubuntu bug report:
https://bugs.launchpad.net/ubuntu/+source/kscreen/+bug/1939377
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