Bug 500016

Summary:	Missing screen resolutions
Product:	[Plasma] KScreen	Reporter:	emozdemir
Component:	common	Assignee:	kscreen-bugs-null <kscreen-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	ahiemstra
Priority:	NOR
Version First Reported In:	6.3.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Display configuration screenshot

Description emozdemir 2025-02-13 18:29:04 UTC

Created attachment 178313 [details]
Display configuration screenshot

SUMMARY
After updating to the plasma 6.3, i can't change my resolution other than 1080p. Refresh rate not affected.

STEPS TO REPRODUCE
1. Open up display configuration.
2. Only option is 1920x1080

OBSERVED RESULT
I can't change resolution.

EXPECTED RESULT
Selectable resolutions other than 1080p.

SOFTWARE/OS VERSIONS
Operating System: CachyOS Linux
KDE Plasma Version: 6.3.0
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.2
Kernel Version: 6.13.2-2-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 7640HS w/ Radeon 760M Graphics
Memory: 14.9 GiB of RAM
Graphics Processor 1: NVIDIA GeForce RTX 4050 Laptop GPU
Graphics Processor 2: AMD Radeon 760M

ADDITIONAL INFORMATION
kscreen-doctor output.
> kscreen-doctor -o
> Output: 1 eDP-2
>        enabled
>        connected
>        priority 1
>        Panel
>        Modes:  1:1920x1080@144!  2:1920x1080@60*
>        Geometry: 0,0 1920x1080
>        Scale: 1
>        Rotation: 1
>        Overscan: 0
>        Vrr: Never
>        RgbRange: unknown
>        HDR: incapable
>        Wide Color Gamut: incapable
>        ICC profile: none
>        Color profile source: EDID
>        Color power preference: prefer efficiency and performance
>        Brightness control: supported, set to 100% and dimming to 100%

Comment 1 Arjen Hiemstra 2025-02-17 14:34:57 UTC

I have a whole bunch of resolutions available next to the native resolution, so I cannot reproduce this. Can you share a dump of your monitor's edid and contents of the file `modes` that can both be found in `/sys/class/drm/cardX-eDP-2`?

Comment 2 emozdemir 2025-02-18 13:34:45 UTC

(In reply to Arjen Hiemstra from comment #1)
> I have a whole bunch of resolutions available next to the native resolution,
> so I cannot reproduce this. Can you share a dump of your monitor's edid and
> contents of the file `modes` that can both be found in
> `/sys/class/drm/cardX-eDP-2`?

I also want to say the issue with display resolution appears when using my laptop's dGPU (NVIDIA RTX 4050). After switching to the AMD iGPU, the problem resolved, and I was able to see all available resolutions with 60Hz and 144Hz options too. This issue has never occurred before in over a year of using the laptop with the dGPU, which suggests it might be related to an NVIDIA bug.

EDID: https://pastebin.com/PKsFBwif 
Modes: https://pastebin.com/S22f9TZm

If this has nothing to do with kde at all i might report this to nvidia forums.

Comment 3 Bug Janitor Service 2025-03-05 03:47:22 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

Comment 4 Bug Janitor Service 2025-03-20 03:47:21 UTC

🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.