Bug 442439

Summary:	Display scaling resets to 100% after Wayland login if previous session was X11
Product:	[Plasma] kwin	Reporter:	Lyubomir <liubomirwm>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal
Priority:	NOR
Version:	5.22.5
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:

Description Lyubomir 2021-09-14 16:35:47 UTC

SUMMARY
(in disagreement with System Settings value)

STEPS TO REPRODUCE
1. Login to Wayland session
2. Change scale to 125%
3. Logout
4. Login to X11 session
5. Logout
6. Login to Wayland session

OBSERVED RESULT
Notice how the System Settings/Display Configuration shows 125%, but in reality the display is not scaled at 125% but at 100%. There is a disagreement between the shown value and the effective value - everything is small at 100%.

EXPECTED RESULT
Logging into a Wayland session after a X11 session was used before should result not only in System Settings showing 125% value, but also in KWin respecting that value effectively.

SOFTWARE/OS VERSIONS
Operating System: Kubuntu 21.04
KDE Plasma Version: 5.22.5
KDE Frameworks Version: 5.85.0
Qt Version: 5.15.2
Kernel Version: 5.11.0-34-lowlatency (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7,6 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620

Comment 1 Lyubomir 2021-09-14 16:39:03 UTC

Marking my own bug as a duplicate of this one.

*** This bug has been marked as a duplicate of bug 433460 ***