Bug 455437

Summary: Wayland: Can't login in multi monitor, multi GPU setups
Product: [Plasma] kwin Reporter: Linus Dierheimer <Linus>
Component: wayland-genericAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: major CC: Linus
Priority: NOR    
Version: 5.25.0   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Attachments: drm_info output, from the working x11 session.

Description Linus Dierheimer 2022-06-16 19:32:14 UTC
Created attachment 149827 [details]
drm_info output, from the working x11 session.

SUMMARY

Since the update the 5.25.0 i can't login to a wayland session anymore. The screen of my laptop is just black for ever, the external monitor doesn't even report a signal.  X11 works fine.

I have a multi GPU setup, i included the output of drm_info as an attachment. For more technical detail, the Laptop is a DELL G5 SE 5505.

STEPS TO REPRODUCE
1.  Run a dual gpu, dual monitor setup.
2.  try to login to a wayland session.
3.  See (actually see nothing)

OBSERVED RESULT

Black screen

EXPECTED RESULT

Plasmashell up and running

SOFTWARE/OS VERSIONS
Linux: 5.18.3-arch1-1 (64-bit)
KDE Plasma Version: 5.25.0
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.4 (with all the KDE patches)
Comment 1 Linus Dierheimer 2022-06-16 23:08:04 UTC
Seems to be a duplicate of #454086, just with HDMI instead of USB C here. But i am pretty sure it is the same root cause.

*** This bug has been marked as a duplicate of bug 454086 ***