https://bugs.kde.org/show_bug.cgi?id=451309
Bug ID: 451309
Summary: Many problems with dual monitors in 'clone' mode with
a 4k laptop
Product: kwin
Version: 5.23.5
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: kwin-bugs-n...@kde.org
Reporter: frederic.parre...@univ-grenoble-alpes.fr
Target Milestone: ---
The 'clone' mode with an external monitor is basically unusable with a 4k
laptop
***
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***
STEPS TO REPRODUCE
1. Use a 4k laptop (with 200% scaling) connected to an external <FHD video
projector or monitor
2. Try to set the display configuration in 'clone' mode
OBSERVED RESULT
1st problem: the laptop display UI is completely messed, since the resolution
is set to FHD but still with the 200% scaling
2nd problem: nothing appears on the external video projector or monitor
3rd problem: even if you disconnect the external video projector, the laptop
still keeps its low resolution, does not come back to the native 4k resolution
4th problem: in KDE display settings, it is impossible to set back the
resolution to 4k, the resolution does not exist anymore
5th problem: even if you manage to change the resolution, it is impossible to
apply the change since the bottom part of the setting window with the 'apply'
button is hidden and there is not way to scroll down
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: Debian Bookworm
(available in About System)
KDE Plasma Version: 5.23.5
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
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