https://bugs.kde.org/show_bug.cgi?id=506706
Bug ID: 506706
Summary: Brightness control missing for secondary screen
Classification: Plasma
Product: plasmashell
Version First 6.4.2
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Brightness and Color widget
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
Created attachment 183027
--> https://bugs.kde.org/attachment.cgi?id=183027&action=edit
kscreen-doctor -o output that shows the secondary screen not being capable of
brightness control
SUMMARY
I have two screens connected to my PC via display port, the primary screen
always has a brightness control slider in the brightness menu, the secondary
screen only has one some of the time.
A normal start where the secondary screen doesn't have a brightness slider
starts with booting the PC with only the primary screen switched on, logging in
to Wayland powered KDE and then switching on the secondary screen, eventually
switching off the secondary screen and continuing to use the PC and eventually
shutting down the PC.
Sometimes I deviate from this slightly, I either switch the secondary screen on
during boot or while at the SDDM login screen, like today, and then I do
sometimes get a brightness control for that screen.
I have attached the output of kscreen-doctor -o from yesterday, where the
screen didn't have a brightness control and no amount or combination of
switching it off, disconnecting the cable and switching it back on and
reconnecting the cable could convince KDE to give the screen a brightness
control. In fact, kscreen-doctor is even convinced that the secondary screen is
not capable of having its brightness changed. The other output is from today
where the same screen now has a brightness control.
Both screens are connected via a DisplayPort cable with my AMD GPU.
STEPS TO REPRODUCE
1. Connect two screens via DisplayPort to a PC
2. Start the PC with one screen being switched on, the other is switched off
3. Arrive at the SDDM login screen, make sure to select KDE Wayland as the
target session and login
4. Switch the secondary screen on
OBSERVED RESULT
The primary screen has a brightness control slider, the secondary doesn't have
one.
EXPECTED RESULT
There should be a brightness control slider for both screens.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.4.2
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.1
Kernel Version: 6.15.4-arch2-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 7600X 6-Core Processor
Memory: 32 GiB of RAM (30.7 GiB usable)
Graphics Processor: AMD Radeon RX 6800 XT
--
You are receiving this mail because:
You are watching all bug changes.
