https://bugs.kde.org/show_bug.cgi?id=494730
Bug ID: 494730
Summary: One brightness slider affects both eDP screens on the
ASUS Zenbook Duo 2024 UX8406
Classification: Plasma
Product: plasmashell
Version: git-stable-Plasma/6.2
Platform: NixOS
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Brightness and Color
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
Created attachment 174799
--> https://bugs.kde.org/attachment.cgi?id=174799&action=edit
Dual sliders
SUMMARY
The ASUS Zenbook Duo 2024 UX8406 has two identical (truly, down to the EDID)
displays connected over eDP.
On Plasma 6.2, a brightness slider appears for each display. The first slider
changes the brightness of both displays, though, and the second only changes
the brightness of the lower display.
STEPS TO REPRODUCE
1. Enable both displays on the Zenbook Duo 2024 (or possibly another laptop
with dual eDP and/or identical EDIDs)
2. Attempt to use the sliders
OBSERVED RESULT
The second slider acts like a range modifier: If it is at 50%, the first slider
will move the upper display between 0% and 100% while moving the lower display
between 0% and 50%.
EXPECTED RESULT
The sliders should only affect their respective displays.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: NixOS unstable
KDE Plasma Version: 6.2.0
KDE Frameworks Version: 6.6.0
Qt Version: 6.7.2
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