Bug 451906 - Blackscreen with mouse pointer only on wayland when multiple displays are connected
Summary: Blackscreen with mouse pointer only on wayland when multiple displays are con...
Status: RESOLVED DUPLICATE of bug 450068
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (show other bugs)
Version: 5.24.3
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
Depends on:
Reported: 2022-03-25 20:32 UTC by Elias
Modified: 2023-01-17 14:30 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed In:


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Description Elias 2022-03-25 20:32:39 UTC

When starting a Wayland session and multiple displays are connected to the gpu, only a black screen is rendered with only the mouse pointer visible and moveable.
When only one display is connected to the gpu, the wayland session correctly renders the desktop.


1. Start KDE Wayland session


Only black screen with mouse pointer is shown.


Desktop should render correctly.

Linux/KDE Plasma: Arch Linux / KDE 5.24.3
KDE Plasma Version: 5.24.3
KDE Frameworks Version:  5.92.0
Qt Version: 5.15.3

GPU: Nvidia GTX 1060, using nvidia v510.54 driver
Kernel: default 'linux' package from Arch, version 5.16.16-arch1-1
Comment 1 galder 2022-03-26 12:27:28 UTC
Posible duplicate of https://bugs.kde.org/show_bug.cgi?id=353975
Comment 2 Nate Graham 2022-03-26 16:24:08 UTC
Maybe, but maybe not. Elias, does this affect all screens, or only one? If it's only one, then it's probably the same as Bug 353975.
Comment 3 Elias 2022-03-29 10:21:43 UTC
> Elias, does this affect all screens, or only one?

It did affect all screens, so it is not a duplicate. However the issue is no more since I recreated my user account. Seems there was a problem with some config or cache. I now created a new user and set up most of my stuff again and it still works. (Well, despite of some graphical glichtes, but it is not black anymore.)

I'm sorry to tell you that I forgot to take a backup of the old users dotfiles. (Didn't really think that this would fix it, was just about resetting my user anyway.) So we can't figure out what exactly caused the problem :/

I will mark this as resolved for now. Will see if the problem comes up again after more configuration.
Comment 4 Nate Graham 2022-03-31 21:07:06 UTC
Thanks for the info.
Comment 5 Vlad Zahorodnii 2023-01-17 11:08:55 UTC
Reopen if the issue comes back.
Comment 6 Nate Graham 2023-01-17 14:30:15 UTC
The symptoms indicate not a KWin issue, but rather the age-old Plasma multiscreen containment loss issue, which has been fixed for Plasma 5.27.

*** This bug has been marked as a duplicate of bug 450068 ***