Bug 500609

Summary:	Brightness of an external monitor connected via HDMI resets from 0% to 100% after sleep.
Product:	[Plasma] plasmashell	Reporter:	indx <l0rmin>
Component:	Power management & brightness	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	agsimmons0, nate
Priority:	NOR	Keywords:	multiscreen, usability
Version First Reported In:	6.3.1
Target Milestone:	1.0
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description indx 2025-02-23 07:44:10 UTC

SUMMARY
Brightness of an external monitor connected via HDMI resets to 100% after sleep.


STEPS TO REPRODUCE
1. Connect an external monitor, disable built-in one
2. Set brightness to 0%
2. Leave the laptop idle, so it goes to sleep mode
3. Turn the screen on

OBSERVED RESULT
Plasma reset brightness to 100%

EXPECTED RESULT
Brightness stayed the same as before sleep mode

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

ADDITIONAL INFORMATION

Comment 1 Nate Graham 2025-02-24 16:44:02 UTC


*** This bug has been marked as a duplicate of bug 500116 ***

Comment 2 Nate Graham 2025-02-28 17:32:36 UTC


*** This bug has been marked as a duplicate of bug 494408 ***