Bug 472139

Summary:	kernel 6.3.0-2 display settings thinks that I am using Wayland when in X11
Product:	[Plasma] KScreen	Reporter:	jes <jessesola>
Component:	common	Assignee:	kscreen-bugs-null <kscreen-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	0456523
Priority:	NOR
Version First Reported In:	5.27.6
Target Milestone:	---
Platform:	Debian unstable
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	display resolution error in X11 session display resolution working correctly

Description jes 2023-07-10 18:19:48 UTC

Created attachment 160224 [details]
display resolution error in X11 session

Running Debian sid/unstable booting kernel 6.3.0-2 display settings thinks that I am using Wayland, when actually in X11. If I reboot using kernel 6.3.0-1 then display settings correctly identifies that I am in X11.

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***


STEPS TO REPRODUCE
1. Boot using latest Debian unstable kernel 6.3.0-2 and into X11 session
2. Go to Settings -> Display and Monitor
3. Cannot change resolution and there is an info / exclamation icon that reports "Using unsupported resolutions was possible in the Plasma X11 session, but they were never guaranteed to work and are not available in the Plasma Wayland session."


OBSERVED RESULT
Cannot change resolution and there is an info / exclamation icon that reports "Using unsupported resolutions was possible in the Plasma X11 session, but they were never guaranteed to work and are not available in the Plasma Wayland session."

EXPECTED RESULT
Change display resolution that was available in kernel 6.3.0-1

SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.107.0
Qt Version: 5.15.10

ADDITIONAL INFORMATION
Operating System: Debian GNU/Linux 12
Kernel Version: 6.3.0-1-amd64 (64-bit)
Graphics Platform: X11
Processors: 16 × AMD Ryzen 7 6800H with Radeon Graphics
Memory: 30.5 GiB of RAM
Graphics Processor: AMD Radeon RX 6700M
Manufacturer: LENOVO
Product Name: 82UH
System Version: Legion 7 16ARHA7

Comment 1 jes 2023-07-10 18:22:11 UTC

Created attachment 160225 [details]
display resolution working correctly

Display resolution selection working correctly with kernel 6.3.0-1 in X11 session.

Comment 2 PQCraft 2023-07-11 07:18:33 UTC

Can confirm this on plasma 5.27.6 and kernel 6.4.2-1

Comment 3 jes 2023-07-24 18:19:54 UTC

Upgrading debian kernel to 6.4.4-1 resolved issue.

$ uname -a
Linux jsola1 6.4.0-1-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.4.4-1 (2023-07-23) x86_64 GNU/Linux

No idea what changes were made between debian kernel 6.3.0-2 to 6.4.0-1, but glad the bug was fixed.