Bug 490916

Summary:	Monitor does not turn back on after inactivity
Product:	[Plasma] kwin	Reporter:	me
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	NEEDSINFO WAITINGFORINFO
Severity:	normal	CC:	kv3f5ves, lg_ninjalo, nate, veehexx, xaver.hugl
Priority:	NOR
Version First Reported In:	6.1.3
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description me 2024-07-28 10:39:13 UTC

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***

When the monitor turns off due to inactivity, it fails to reactivate after mouse movement or keyboard input. Manually turning on the monitor using its power button results in a "no signal detected via HDMI" error. The only solution is to force a system shutdown by holding the power button and then restarting the computer. My graphics card is an AMD RX 6500 XT.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 40 KDE Plasma
KDE Plasma Version: 6.1.3
KDE Frameworks Version: 6.4.0
Qt Version: 6.7.2
Wayland

Comment 1 sparkie 2025-08-02 23:11:37 UTC

So I'm having this issue as well and have been for a while. Once the monitors power off due to inactivity, I cannot wake them. I'll work on getting some debug info from the guides.

Comment 2 Zamundaaa 2025-10-14 12:43:21 UTC

Sorry we didn't get to this issue yet.

Please attach the output of drm_info when the monitor isn't receiving any signal. You can get the output (and shut down the computer more nicely) with ssh from another device (for example your phone).