https://bugs.kde.org/show_bug.cgi?id=496159
Bug ID: 496159
Summary: Handheld PCs show invalid internal panel resolutions
as valid in display settings
Classification: Plasma
Product: KScreen
Version: 6.2.2
Platform: SteamOS
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: matthew.schwa...@linux.dev
Target Milestone: ---
Created attachment 175752
--> https://bugs.kde.org/attachment.cgi?id=175752&action=edit
legion go kscreen-doctor output, kscreen.log, and edid-decode
SUMMARY
On many handheld PCs with internal displays, such as the Lenovo Legion Go and
ROG Ally, KScreen under KWin Wayland reports invalid scaled panel resolutions
as valid. If any of these non-valid resolutions are selected, major paneel
issues occur such as artifacting across the entire display or half of the panel
going blank. If users happen to hit save on any of these resolutions, then they
need to totally reset their Plasma display settings in order to get a usable
internal panel again.
STEPS TO REPRODUCE
1. On a handheld PC, such as the Legion Go or ROG Ally, launch Plasma under
Wayland
2. In System Settings -> Display Configuration, select one of the non-default
modes in the drop down menu for resolution
OBSERVED RESULT
Artifacts across the entire panel or portions of the panel going blank
EXPECTED RESULT
Valid scaled image or no selectable invalid resolutions listed.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: SteamOS 3.7, Linux 6.8.12-valve3-1-neptune-68
KDE Plasma Version: 6.2.2
KDE Frameworks Version: 6.7.0
Qt Version: 6.8.0
ADDITIONAL INFORMATION
Under Plasma X11, invalid monitor modes are not listed at all so this is not an
issue.
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