Bug 500816

Summary:	suspend mode resumes to black screen
Product:	[Plasma] kwin	Reporter:	branch8475 <branch8475>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	kalzwayed, korondi.mark, xaver.hugl
Priority:	NOR
Version First Reported In:	git-stable-Plasma/6.3
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	journalctl log as requested in comment #1

Description branch8475 2025-02-27 15:55:12 UTC

SUMMARY
When I send the operating system into suspend mode with "systemctl suspend", then everything works fine.
But when I use the standby button in the Kickoff Application Launcher of KDE Plasma, then the operating system goes into suspend mode and after user input resumes to a black screen.


STEPS TO REPRODUCE
1. Open Kickoff Application Launcher
2. Klick on "Standby Mode"
3. Wait until the operating system is in suspend mode.
4. Provide user input so that the operating system awakes
5. Wait until the operating system has returned from suspend mode

OBSERVED RESULT
The screen is black.

EXPECTED RESULT
The Plasma desktop environment is visible on the monitor

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 41
KDE Plasma Version: 6.3.1
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Graphics driver: Nvidia proprietary driver

ADDITIONAL INFORMATION

journalctl provided this message from the log:
kwin_wayland[1605]: kwin_wayland_drm: Pageflip timed out! This is a bug in the nvidia-drm kernel driver

This message occurs when the operating system goes into suspend mode after step 2.

Comment 1 Zamundaaa 2025-02-27 18:04:33 UTC

Please attach the full output of
> journalctl --user-unit plasma-kwin_wayland --boot 0
after triggering the issue.

Comment 2 branch8475 2025-02-28 19:12:21 UTC

Created attachment 178978 [details]
journalctl log as requested in comment #1

This time after step 5 the KDE Plasma desktop environment appeared on the monitor, but it was frozen and crashed.

Comment 3 Bug Janitor Service 2025-03-15 03:47:35 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 kmarc 2025-03-27 12:46:30 UTC

I'm also affected; not on nvidia, but intel GPU.

Many entries of similar to this:

    kwin_wayland_drm: Setting dpms mode failed!

Comment 5 TraceyC 2025-04-23 20:34:17 UTC

*** Bug 501995 has been marked as a duplicate of this bug. ***

Comment 6 Zamundaaa 2025-05-30 13:23:20 UTC

Can you follow https://invent.kde.org/plasma/kwin/-/wikis/Debugging/Debugging-DRM-issues to get a drm debug log of the issue? It will hopefully show why setting the dpms mode fails.

Comment 7 Bug Janitor Service 2025-06-14 03:47:47 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 8 Bug Janitor Service 2025-06-29 03:47:30 UTC

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