Bug 434068

Summary:	The new "fade the screen when you don't move the mouse for a bit" stuck my monitor on a lower brightness
Product:	[Plasma] plasmashell	Reporter:	Keziolio <keziolio123>
Component:	general	Assignee:	David Edmundson <kde>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	plasma-bugs-null
Priority:	NOR
Version First Reported In:	5.21.2
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Keziolio 2021-03-06 18:28:40 UTC

SUMMARY
title

STEPS TO REPRODUCE
1. wait for the screen to fade by not using the computer
2. abrupt power failure
3. reboot to a dim monitor

OBSERVED RESULT
the screen is dim

EXPECTED RESULT
when booting the computer, the screen should be reset to the normal brightness

SOFTWARE/OS VERSIONS
Archlinux, everything up to date

ADDITIONAL INFORMATION
How do I manually reset this to normal and disable this forever?

Comment 1 Keziolio 2021-03-06 20:12:40 UTC

Apparently I can't reproduce this, so idk

Comment 2 Keziolio 2021-03-06 21:30:16 UTC

Ok now I get it, kde has introduced the protocol thing that modifies the backlight of desktop monitors attached by displayport, just like laptops, but I've never seen this before on a desktop computer, for some reason one of my monitors remembers the default brightness, the other one does not, and this caused the bug when the power interrupted, so not a kde bug