Bug 427413

Summary: Kscreen 2 prevents the screen from entering energy saving mode
Product: [Plasma] KScreen Reporter: Juan Simón <decedion>
Component: commonAssignee: kscreen-bugs-null <kscreen-bugs-null>
Status: RESOLVED UPSTREAM    
Severity: major CC: axel, erbengi, nate
Priority: NOR    
Version First Reported In: 5.19.5   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
URL: https://gitlab.freedesktop.org/drm/amd/-/issues/662
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: System log output at the time of suspension/reactivation

Description Juan Simón 2020-10-07 09:11:58 UTC
Created attachment 132190 [details]
System log output at the time of suspension/reactivation

I have set the display to turn off after 5 minutes, but when the time comes the display turns off and on immediately. 
In the system log it shows many lines from kscreen (I attach the log output).
It is a new installation on a new computer. So I have no previous experience.
However, in my "old" computer (it runs the same environment with the same programs but different hardware) it does work.

If I unset "KScreen 2" from background services, DPMS works well.

Operating System: Arch Linux
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.74.0
Qt Version: 5.15.1
Kernel Version: 5.8.13-zen1-2-zen
OS Type: 64-bit
Processors: 64 × AMD Ryzen Threadripper 3970X 32-Core Processor
Memory: 62.7 GiB of RAM
Graphics Processor: Radeon RX 580 Series
Comment 1 Juan Simón 2020-10-07 10:31:14 UTC
I think this is related to this another bug of amdgpu: https://gitlab.freedesktop.org/drm/amd/-/issues/662

After reading the above error report, I reactivated the KScreen service again and deactivated "Auto Select Input" option on the monitor. For the moment, it works.
Comment 2 Nate Graham 2022-11-08 22:58:36 UTC
Thanks for following up.