Bug 394583

Summary:	"Panel" UI freezes, still functional but display is no longer updating
Product:	[Plasma] plasmashell	Reporter:	Ian Page Hands <iphands>
Component:	Panel	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	finex, kde
Priority:	NOR
Version:	5.12.5
Target Milestone:	1.0
Platform:	RedHat Enterprise Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Ian Page Hands 2018-05-22 23:17:08 UTC

I use a single "Panel" that has the laucher, virtual desktop switcher, task manager, and notifications / clock.

Every once in a while (usually < 1hr of usage) I notice that the clock is stopped. Also the task manager portion shows old state... if I had xosview open (for example) when the "Panel" froze, then kill it later... I can still see the xosview in the task manager.

The state of the task manager *is* updated. I can change from app to app just fine, but I have to know where they are because what I see does not reflect the current state.

I can even hover and pause and discover what is actually on the panel. i.e. If I hover over what appears to be taskA (even though taskA is no longer preset) if taskB happens to be in that same spot, the flyout menu shows taskB.

Also alt+tab shows the correct tasks and task order, even when the panel UI/diplay is "frozen".

Comment 1 Ian Page Hands 2018-05-22 23:20:36 UTC

This seems an awful lot like the bug described here: https://bugzilla.redhat.com/show_bug.cgi?id=1193742

That bug talks about this happening with Intel graphics though. I am running NVIDIA hardware and drivers.

One other interesting thing is if I start and stop the compositor the transparency of the panel get enabled/disabled, but still the wrong information is shown (i.e. the clock is wrong, the state of the task manager is wrong etc).

Comment 2 FiNeX 2018-07-12 17:24:51 UTC

Hi, I'm experiencing the same bug daily. I'm using NVIDIA drivers and latest software version (on Archlinux). I did not found a pattern to reproduce the bug. Sometimes it starts while copying files or after opening/closing notifications.

Similar bugs:
https://bugs.kde.org/show_bug.cgi?id=380250
https://bugs.kde.org/show_bug.cgi?id=383660
https://bugs.kde.org/show_bug.cgi?id=386781
https://bugs.kde.org/show_bug.cgi?id=375781
https://bugs.kde.org/show_bug.cgi?id=358231
https://bugs.kde.org/show_bug.cgi?id=351897
https://bugs.kde.org/show_bug.cgi?id=382372

If you need more detailed info just ask :-)

Comment 3 David Edmundson 2018-07-12 17:38:11 UTC


*** This bug has been marked as a duplicate of bug 353983 ***

Comment 4 Ian Page Hands 2018-07-12 17:52:00 UTC

For what its worth... I have been running with the compositor disabled for a while now, and the issue is gone while in this mode.

I suspect the issue still exists, but I just keep the compositor disabled.