https://bugs.kde.org/show_bug.cgi?id=514632
Bug ID: 514632
Summary: 1/3 monitor stays black on KDE initialization AFTER
login on boot
Classification: Plasma
Product: kwin
Version First 5.27.12
Reported In:
Platform: Pop!_OS
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
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SUMMARY
When I boot my computer, I see all 3 of my monitors on the Pop!_OS Cosmic login
screen.
After logging in, I see the KDE splash screen on only 2 monitors. Once KDE is
done loading, the only way I found so far of fixing my third, vertical monitor
(plugged through DVI) to show anything, is to change a Display setting (for
example I change the display orientation, then revert the change).
STEPS TO REPRODUCE
1. Boot
2. Login (Cosmic login screen)
OBSERVED RESULT
See that 1/3 monitor (vertical one through DVI, in case that matters) is blank
(backlight and signal, but all black). No mouse visible but I can move windows
/ my mouse over to the blank monitor (nothing is visible, but my monitor is at
least correctly picked-up as existing)
EXPECTED RESULT
I expect to see my desktop
SOFTWARE/OS VERSIONS
Operating System: Pop!_OS 24.04
KDE Plasma Version: 5.27.12
KDE Frameworks Version: 5.115.0
Qt Version: 5.15.13
Kernel Version: 6.17.9-76061709-generic (64-bit)
Graphics Platform: offscreen
Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3070/PCIe/SSE2
ADDITIONAL INFORMATION
This is a fairly fresh Linux install. My issue started happening as soon as I
installed KDE. Which I did by running `sudo apt install kde-standard` (and
selecting to keep Cosmic as the login page)
Similar issues:
- https://bugs.kde.org/show_bug.cgi?id=490040 Description and title is spot on
to my issue. Except that restarting plasmashell does not help.
- https://bugs.kde.org/show_bug.cgi?id=509763
- https://bugs.kde.org/show_bug.cgi?id=475238 Not very descriptive, but I have
A black screen after login
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