Bug 464984

Summary:	Plasma mobile session does not start kwin_wayland_drm: No suitable DRM devices have been found
Product:	[Plasma] plasma-mobile	Reporter:	Marco Mattiolo <marco.mattiolo>
Component:	general	Assignee:	Plasma Mobile Bugs <plasma-mobile-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Debian testing
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	journalctl log of Plasma mobile session started from phog greeter journalctl log of Plasma mobile started as a system service after stopping phog journalctl log of Plasma mobile started with startplasma-wayland journalctl log of Plasma mobile starting as systemd service w/o phog/greetd/any-DM

Description Marco Mattiolo 2023-01-29 14:31:34 UTC

Created attachment 155763 [details]
journalctl log of Plasma mobile session started from phog greeter

SUMMARY
Hi and thank you for developing plasma-mobile!
Here using plasma-mobile 5.26.90 on up-to-date Mobian bookworm on OG PP.
Plasma-mobile is not yet in Debian, but I've built it using [1].
In the last few weeks, I've been experiencing lot of issues with plasma-mobile, like session stuck ("loginctl unlock-session" white text on black screen) or not starting.  Freeze deadline for Debian bookworm is on February,12th then a lot of new packages' versions are hitting the repo these days, including Qt-5.15.8, KDE Frameworks 5.102 and Plasma workspace 5.26.90.
Could you please take a look at the attached journalctl log and help me spotting the issue?

[1] https://salsa.debian.org/tiol/plasma-mobile/-/tree/debian/local


SOFTWARE/OS VERSIONS
Linux:  6.1.6-sunxi64
KDE Plasma Version:  5.26.90
KDE Frameworks Version: 5.102.0
Qt Version: 5.15.8

Comment 1 Marco Mattiolo 2023-01-29 16:36:28 UTC

Created attachment 155769 [details]
journalctl log of Plasma mobile started as a system service after stopping phog

Comment 2 Marco Mattiolo 2023-01-31 17:19:52 UTC

Created attachment 155830 [details]
journalctl log of Plasma mobile started with startplasma-wayland

Comment 3 Marco Mattiolo 2023-02-04 10:11:31 UTC

Created attachment 155932 [details]
journalctl log of Plasma mobile starting as systemd service w/o phog/greetd/any-DM

In this way, Plasma Mobile session is started, I can see lockscreen, but when I unlock the "[...] loginctl unlock-session 1 [...]" white writing on black background appears. Unlocking from serial console seems to bring session to a working state.

Comment 4 Marco Mattiolo 2023-02-04 13:56:19 UTC

Ok, by starting plasma-mobile as a systemd service instead of from phog, it starts (even if the session crashes just out of kscreenlocker... filing a kscreenlocker bug for that). Then it's likely a phog issue. Closing