https://bugs.kde.org/show_bug.cgi?id=449960
Bug ID: 449960
Summary: Desktops appear cut off and shifted horizontally in
Desktop Grid after a KWin crash
Product: kwin
Version: 5.24.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: effects-desktop-grid
Assignee: kwin-bugs-n...@kde.org
Reporter: philipp.reichm...@gmail.com
Target Milestone: ---
Created attachment 146545
--> https://bugs.kde.org/attachment.cgi?id=146545&action=edit
Photo of Desktop Grid on both monitors. On the left monitor, full-screen
Konsole on VD2. On the right monitor, six full-screen windows on the first six
VDs, Spectacle on VD7
SUMMARY
When KWin comes up again after a crash related to unplugging a monitor
(reported in bug 449957), the Virtual Desktop grid on both monitors shows
various visual errors.
STEPS TO REPRODUCE
1. Get KWin to crash by unplugging or switching off the external monitor
2. Invoke the Desktop Grid
OBSERVED RESULT
On the monitor which was unplugged earlier, the Desktop Grid shows the
following visual errors (see attached photo):
- Moving the mouse over the various desktops, the highlighting of the desktop
under the mouse appears offset to the left by an amount X.
- All virtual desktops on that monitor appear smaller by the same amount X.
- On some virtual desktops, this shrinking looks as if the windows are cut
off on the right (in the photo, various Electron or Qt applications on VD1,
VD2-9).
- On some virtual desktops, this looks as if the window is scaled to fit into
X (in the photo, Firefox on VD2).
- The desktops are displayed wallpaper configured on the other monitor, not
with the one that is actually configured on them.
On the monitor that was NOT unplugged, the Desktop Grid shows the following
visual errors:
- The desktops are shown as if they had a black wallpaper; the configured
wallpaper is not shown.
X is equivalent to the width of the desktop on my other monitor (the built-in
screen on my laptop).
EXPECTED RESULT
The Desktop Grid effect should show the desktops regularly on all monitors, not
only on those that weren't switched off before the crash.
SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20220207
KDE Plasma Version: 5.24.0
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
Kernel Version: 5.16.5-1-default (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-8550U CPU @ 1.80GHz
Memory: 15.5 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
ADDITIONAL INFORMATION
This error has been around since at least 5.23 or so, so it's not a 5.24
regression.
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