Bug 494899

Summary:	After update to Plasma 6.2, black screen with cursor after boot-up or screen unlock until switching TTYs with DDC active
Product:	[Plasma] plasmashell	Reporter:	garybig
Component:	Power management & brightness	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	REPORTED ---
Severity:	normal	CC:	jgb.mcdonald, kde, leonardolima.art, natalie_clarius, nate, notmart
Priority:	NOR	Keywords:	regression
Version:	6.2.0
Target Milestone:	1.0
Platform:	Arch Linux
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=495456
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description garybig 2024-10-17 00:09:39 UTC

SUMMARY
DDCUTIL, powerdevil, plasma-desktop ISSUE ?

STEPS TO REPRODUCE
1. start up EndeavourOS or CachyOS with recent Plasma 6.2 update
2. boots up, gets to plasma desktop, goes to black screen
3. if I open up terminal with CTL-ALT #, and return to plasma-desktop with CTL-ALT# :   NORMAL plasma desktop

OBSERVED RESULT
black screen

EXPECTED RESULT
plasma desktop

SOFTWARE/OS VERSIONS
current

Linux/KDE Plasma: 
KDE Plasma Version: 6.2

ADDITIONAL INFORMATION

Lenovo Legion T5 26ARA8
AMD Ryzen 7 7700
Radeon RX 6600
samsung s32ag55 monitor

Comment 1 Nate Graham 2024-11-08 22:23:30 UTC

Is this seen on both X11 and Wayland, or only one?

Comment 2 Nate Graham 2024-11-08 22:27:04 UTC

*** Bug 495191 has been marked as a duplicate of this bug. ***

Comment 3 Nate Graham 2024-11-08 22:40:09 UTC

*** Bug 495607 has been marked as a duplicate of this bug. ***

Comment 4 Nate Graham 2024-11-08 22:47:32 UTC

*** Bug 495012 has been marked as a duplicate of this bug. ***

Comment 5 Nate Graham 2024-11-08 22:55:36 UTC

From other bug reports reported by the same person, it affects the system with Powerdebil 6.2 0r later with DDC active.

Comment 6 Nate Graham 2024-11-11 22:25:21 UTC

*** Bug 495456 has been marked as a duplicate of this bug. ***

Comment 7 garybig 2024-11-27 17:37:48 UTC

STILL a bug in powerdevil 6.2.4

same fault, still a bug --  Hello?