Bug 483476

Summary:	Wrong panel placement after reboot, due to 'manage desktops and panels' mapping?
Product:	[Plasma] plasmashell	Reporter:	lifebarier
Component:	"Manage Desktop and Panels" window	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	manuel.toennes, nate, notmart
Priority:	NOR	Keywords:	qt6
Version First Reported In:	6.0.1
Target Milestone:	1.0
Platform:	Arch Linux
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=477122
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description lifebarier 2024-03-13 19:26:56 UTC

SUMMARY
On new plasma 6 panel is on wrong monitor after reboot. Might be related to listing of monitors on 'manage desktops and panels' modal.


STEPS TO REPRODUCE
1. Have 3 screens (might work with 2)
2. Note order of them - lets call it (left to tight) A,B,C now
3. Right click on desktop and open "manage desktops and panels"
3.1 (not sure if related) somehow have situation where screens in that modal are listed as B,A,C (middle one as left most)
4. Move panel around until it is on middle screen (not middle screen in modal, but actual middle screen)
5. Save and reboot.
6. Note that panel is on screen A (left most one)
7. Open 'manage desktops and panels'
8. Note that screens there are listed as B,A,C AND panel is on B , so it should be in the middle one, but it seems that panel is (on boot) mapped to screen based on their position in that modal and not identity
9. Move panel to screen A (middle one on modal) - panel stays on left most screen.
10. Move back to screen B (left most on modal) - panel appears on middle screen.

OBSERVED RESULT
Panel placed on wrong screen

EXPECTED RESULT
Panel being placed on correct screen after reboot

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.6.21-1-lts (64-bit)
(available in About System)
KDE Plasma Version: 6.0.1
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2

Comment 1 Nate Graham 2024-04-10 19:51:09 UTC

The order of screens in the Manage Desktops and Panels window is not connected to the actual physical arrangement of your screens. It is simply a linear list of screens. I think you may have been acting under the contrary assumption and thereby creating a problem where there was none.

Comment 2 Nate Graham 2024-04-10 19:51:37 UTC

Ultimately it would be best if the arrangement shown in that window did in fact mirror the actual arrangement. For that, see Bug 477122.

Comment 3 lifebarier 2024-04-10 20:19:48 UTC

No. I do know that first monitor in that list is primary, not the one on physical left. And since I have different wallpapers on each monitor it was quite clear that pannel was not on on the screen that it was supposed to be on (middle screen wallpaper matches first in list and it has pannel painted in list but not on monitor. Panel was actually on left most screen which was rightmost in list)

That having said this bug seems to have been fixed in last couple updates I have received on endevourOS.