https://bugs.kde.org/show_bug.cgi?id=387901

Luiz Angelo De Luca <luizl...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDSINFO                   |REOPENED
         Resolution|WAITINGFORINFO              |---
                 CC|                            |luizl...@gmail.com
     Ever confirmed|0                           |1

--- Comment #2 from Luiz Angelo De Luca <luizl...@gmail.com> ---
Hello,

I'm having something like this problem. I use task manager configured to show
only windows in the current monitor. I'm using 5.13.3 (openSUSE Tumbleweed)

My second screen sometimes does not recovery nicely from sleep/hibernate or
from power save mode. The screen becomes either off (but KDE still detects it
as on) or shows garbage. My workaround is to turn it off and on again:

 xrandr --output DisplayPort-0 --off
 xrandr --output DisplayPort-0 --auto
 xrandr --output DisplayPort-0 --rotate left --left-of DisplayPort-1
 xrandr --output DisplayPort-1 --primary --pos 900x131

When I do that, plasma task manager losses the association of windows-screen on
the primary screen, showing no window at all. The secondary screen does work as
expected.

If I create a new task manager, I can see the correct list of windows.

If I uncheck the "show only windows from current monitor", I can see all
windows, including from the primary screen. However, if I mark it again, I
return to the problematic state.

If I restart plasma, everything is back to normal.

Is there any info to get while the problem is happening?

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