Bug 486326

Summary:	Failed to start Display Configuration when trying to have an external monitor
Product:	[Plasma] KScreen	Reporter:	trolym7
Component:	common	Assignee:	kscreen-bugs-null <kscreen-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	cwo.kde, kdedev
Priority:	NOR
Version:	6.0.4
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	error showing when i plug in the HDMI cable to my other screen

Description trolym7 2024-04-30 07:29:41 UTC

Created attachment 169029 [details]
error showing when i plug in the HDMI cable to my other screen

SUMMARY
Connecting HDMI cable to laptop does not provide video output to the monitor. Doesn't work on x11 nor wayland.

STEPS TO REPRODUCE
1. connect monitor
2. select any option in the display option menu

OBSERVED RESULT
shows the menu which you get from pressing meta+p but nothing happens

EXPECTED RESULT
video output to my second monitor

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: arch linux 6.8.7-zen1-2-zen 
(available in About System)
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0

ADDITIONAL INFORMATION
this is reported in the journal when plugging in the HDMI cable:

Apr 30 09:07:10 magician systemd[4174]: app-org.kde.kscreen-ed610eb0ed5746c6a93b4ec8dda8624e.scope: Couldn't move process 81228 to requested cgroup '/user.slice/user-1000.slice/user@1000.service/app.slice/app-org.kde.kscreen-ed610eb0ed5746c6a93b4ec8dda8624e.scope': No such process
Apr 30 09:07:10 magician systemd[4174]: app-org.kde.kscreen-ed610eb0ed5746c6a93b4ec8dda8624e.scope: Failed to add PIDs to scope's control group: No such process
Apr 30 09:07:10 magician systemd[4174]: app-org.kde.kscreen-ed610eb0ed5746c6a93b4ec8dda8624e.scope: Failed with result 'resources'.
Apr 30 09:07:10 magician systemd[4174]: Failed to start Display Configuration.
Apr 30 09:07:10 magician systemd[4174]: Starting KScreen OSD service...
Apr 30 09:07:10 magician systemd[4174]: Started KScreen OSD service.

Error happens whenever i plug in, unplug, turn on or off my other monitor.
I only get logs like that when using x11, when on wayland, i don't get any logs in the journal when i plug in the HDMI cable.
Interestingly i don't get any logs when OBS is open.

Comment 1 trolym7 2024-06-01 22:09:18 UTC

i performed updates.
kde plasma version 6.0.5
kde frameworks version 6.2.0
qt version 6.7.1
kernel 6.9.2-zen1-1-zen

current logs in journal:
when turning on monitor:
Jun 02 00:03:08 magician systemd[4647]: Starting KScreen OSD service...
Jun 02 00:03:08 magician systemd[4647]: Started KScreen OSD service.
Jun 02 00:03:08 magician kglobalacceld[182273]: method return time=1717279388.146794 sender=:1.137 -> destination=:1.136 serial=11 reply_serial=2


when monitor fully turns on:
Jun 02 00:03:21 magician systemd[4647]: Started Display Configuration.
Jun 02 00:03:21 magician systemd[4647]: Started Display Configuration.
Jun 02 00:03:21 magician systemd[4647]: Starting KScreen OSD service...
Jun 02 00:03:21 magician systemd[4647]: Started KScreen OSD service.
Jun 02 00:03:21 magician kglobalacceld[182301]: method return time=1717279401.341614 sender=:1.140 -> destination=:1.138 serial=11 reply_serial=2
Jun 02 00:03:21 magician kglobalacceld[182302]: method return time=1717279401.341620 sender=:1.140 -> destination=:1.139 serial=12 reply_serial=2


when turning off monitor:
Jun 02 00:03:29 magician systemd[4647]: Started Display Configuration.
Jun 02 00:03:29 magician systemd[4647]: Starting KScreen OSD service...
Jun 02 00:03:29 magician systemd[4647]: Started KScreen OSD service.
Jun 02 00:03:29 magician kglobalacceld[182324]: method return time=1717279409.342789 sender=:1.142 -> destination=:1.141 serial=11 reply_serial=2

Comment 2 cwo 2024-09-13 14:48:11 UTC

There have been some fixes in later Plasma versions (like bug 482642, although that one is only supposed to apply on X11). Can you confirm whether this is still an issue for you?

Comment 3 Bug Janitor Service 2024-09-28 03:47:05 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

Comment 4 Bug Janitor Service 2024-10-13 03:47:43 UTC

🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.