https://bugs.kde.org/show_bug.cgi?id=481222
Bug ID: 481222
Summary: Restore native screen resolution after detaching
external monitor in unify output mode
Classification: Plasma
Product: kwin
Version: 5.93.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: kwin-bugs-n...@kde.org
Reporter: m...@iyanmv.com
Target Milestone: ---
SUMMARY
First of all, a big THANK YOU for all the hard work and improvements around the
multi-screen support. Plasma 5.x always felt a bit unreliable when connecting
external screens. The RC 2 already feels much much better. Specially the "unify
output" mode, which was quite broken in Plasma 5.x in my opinion.
After playing around with different setups, I only notice one small bug. My
laptop has a 16:10 screen. When I connect at 16:9 external monitor and I change
to "unify outputs" mode, the resolutions (correctly!) changes to a 16:9 one.
There are some black bands in the built-in laptop screen (as it should!) and
the external screen shows exactly the same as the laptop without any artifacts
as it happens with Plasma 5.27.10.
However, when detaching the external monitor, the 16:9 resolution is kept
instead of restoring the native 16:10 one.
STEPS TO REPRODUCE
1. Select native 16:10 resolution on a laptop (in my case 1920x1200)
2. Attach an external 16:9 monitor (in my case I tried with a 1920x1080 one)
3. Switch to "unify outputs" mode
4. Detach external screen
OBSERVED RESULT
Laptop keeps the 1920x1080 (16:9) resolution with black bands on the top and
bottom edges
EXPECTED RESULT
Laptop should switch back to its native 16:10 resolution before the "unify
outputs" mode was enabled
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.93.0
KDE Frameworks Version: 5.249.0
Qt Version: 6.7.0
Kernel Version: 6.7.4-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz
Memory: 15.3 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics
Manufacturer: LENOVO
Product Name: 20XYCTO1WW
System Version: ThinkPad X1 Yoga Gen 6
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