Bug 485334

Summary:	Can't interact with area of center display's panel in multiscreen configuration
Product:	[Plasma] plasmashell	Reporter:	FK <fk-kde-bugs>
Component:	Panel	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	fanzhuyifan, nate, niccolo.venerandi
Priority:	NOR	Keywords:	multiscreen
Version First Reported In:	6.0.3
Target Milestone:	1.0
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description FK 2024-04-10 16:58:58 UTC

SUMMARY
I have three displays attached to my system in ▯▭▯ configuration. Usually I only use the middle and right display.
With panels on the center (set to autohide) and right display.

When I activate the third (left) display the left part of the center panel can't be interacted anymore. I can click on it, but I think I just click though to the desktop.
Sometimes this happens with the right display as well, then I can't access the right part of the center panel.

I think this is related to geometry, maybe verticality plays a role as well.

The configurations are as follows:
- ▯▭▯ (three displays, left part of center panel not accessible)
left (DP-5):
Geometry: 0,0 1440x2560

center (DP-1):
Geometry: 1440,400 3840x2160

right (DP-3):
Geometry: 5280,0 1440x2560

- ▭▯ (two display, right part of center panel not accessible)
center (DP-1):
Geometry: 0,400 3840x2160

right (DP-3):
Geometry: 3840,0 1440x2560

STEPS TO REPRODUCE
1. With three displays connected and panel on the center display
2. Enable one display after the other (center, right, left)
3. Left part of the center panel should be unavailable for interaction, when the third (left) display gets enabled.
4. Disabling the the left display leads to the right part of the panel not being accessible anymore.
5. When disabling the second display the panel returns to be working alright again.

OBSERVED RESULT
Center panel isn't fully accessible, depending on screens configured

EXPECTED RESULT
Center panel should always be accessible, independent of screen layout

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.0.3
(available in About System)
KDE Plasma Version: 6.0.3
KDE Frameworks Version: 6.0.0
Qt Version: Version 6.6.3 (built against 6.6.2)

ADDITIONAL INFORMATION

Comment 1 Nate Graham 2024-04-11 18:10:41 UTC

Is this happening on X11, or Wayland, or both?

Comment 2 FK 2024-04-11 18:21:39 UTC

(In reply to Nate Graham from comment #1)
> Is this happening on X11, or Wayland, or both?

Wayland, haven't tested on X11 - but don't remember any such issues with X11 on Plasma 5.

Comment 3 Bug Janitor Service 2024-04-26 03:46:32 UTC Comment hidden (spam)

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

Comment 4 Nate Graham 2024-08-28 20:00:14 UTC

Very odd. Sorry we have not been able to get to it yet. Unfortunately my system isn't powerful enough to support three screens to test this, even though I have enough screens for it. Can I ask you to check if it's still happening in Plasma 6.1.4 or later? Thanks a lot!

Comment 5 FK 2024-08-31 06:30:38 UTC

Haven't experienced this one in a while (with recent plasma). Let's close it for now.