https://bugs.kde.org/show_bug.cgi?id=459643
Bug ID: 459643
Summary: Plasma hangs when trying to log out while program
"Ding" is running and Compositing/HiddenPreviews is
*not* set to "Always"
Classification: Plasma
Product: kwin
Version: 5.24.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Since version 5.19 Plasma hangs when trying to log out/reboot/shutdown while
dictionary "Ding" (Tk based frontend to grep) is running and
Compositing/HiddenPreviews is not set to "6" in .config/kwinrc or "Always" in
Systemsettings/Monitor/Compositor/Keep Window Thumbnails.
What I have observed is that Ding's icon in the taskbar is the first to vanish
from the taskbar and immediately thereafter the screen freezes. The
mousepointer can still be moved but clicking anywhere has no effect.
The session can not be revived/replaced and the only way to get back to the
login screen of the display manager (lightdm) is to kill process
"startplasma-x11" in a VT.
The problem does *not* exist in Plasma-5.18.7, I've checked this several times
today. Irrespective of the setting of "HiddenReviews" (here: 4/5/6), all
logouts and reboots were just fine.
While a bug in Ding cannot be ruled out, a bug in Plasma >= 5.19 seems more
likely since no earlier version had this problem and neither does xfce on the
same PC.
The system is a SysVinit-system but the problem has also been confirmed for a
systemd-system by user popov895
(https://bugs.kde.org/show_bug.cgi?id=374538#c68).
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Current system:
Operating System: Linux
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2
Kernel Version: 5.19.11 (64-bit)
Graphics Platform: X11
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