https://bugs.kde.org/show_bug.cgi?id=359064
Bug ID: 359064
Summary: UI freezes with broken window decorations in plasma
desktop when starting compose in Thunderbird
Product: kwin
Version: 5.5.4
Platform: Archlinux Packages
OS: Linux
Status: UNCONFIRMED
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: mike.cloa...@gmail.com
Occasionally when starting Thunderbird it takes longer than usual to start up
and then when it does so the Thunderbird window has no normal decorations in
the plasma desktop. Occasionally Thunderbird appears to start normally but
then, when starting a compose screen or replying to email, the compose window
opens, but without window decorations, and the desktop is largely frozen. All
open programs appear stacked on the same screen, and all default shortcuts fail
to move to a different virtual desktop. It is not possible to click between
open programs, or to access the K menu.
Using Ctrl Alt Fx to move to a new VT is successful but returning to the
graphical screen has the same symptoms as above and remains frozen.
If a spare area of the desktop is available it is possible to right click and
access the "Leave" option to logout and log back in and this usually results in
a normally behaving desktop again but closes all open programs in the process.
Sometimes it is possible to use the shortcut Alt-F2 to open krunner, and if so
then issuing the command "kwin_x11 --replace" will repaint the screen and
screen behaviour returns to normal without any loss of any running program.
Additional info:
This appears to be a kwin problem and has persisted through all versions of
plasma from the initial 5 release. However this could be due to graphics
rendering issues related to bugs in the qt5 packages, or mesa. The hardware on
which this occurs on multiple machines for me all have Intel integrated
graphics but with different graphics hardware versions. The hardware spans
Ivybridge to Haswell processors with related onboard graphics.
* package version(s)
kwin 5.5.4-1
* config and/or log files etc.
kwin support info and backtrace at the time of crash will be attached to this
report.
Steps to reproduce:
Start Thunderbird and compose new mail or reply to existing mail. UI freezes.
Reproducible: Sometimes
Steps to Reproduce:
1. Login to plasma desktop
2. Start Thunderbird
3. Compose new mail or reply to existing mail.
Actual Results:
Occasionally when starting Thunderbird it takes longer than usual to start up
and then when it does the Thunderbird window has no normal decorations in the
plasma desktop. Occasionally Thunderbird appears to start normally but then,
when starting a compose screen or replying to email, the compose window opens
but without window decorations, and the desktop is largely frozen. All open
programs appear stacked on the same screen, and all default shortcuts fail to
move to a different virtual desktop. It is not possible to click between open
programs, or to access the K menu.
Using Ctrl Alt Fx to move to a new VT is successful but returning to the
graphical screen has the same symptoms as above and remains frozen.
If a spare area of the desktop is available it is possible to right click and
access the "Leave" option to logout and log back in and this usually results in
a normally behaving desktop again but closes all open programs in the process.
Sometimes it is possible to use the shortcut Alt-F2 to open krunner, and if so
then issuing the command "kwin_x11 --replace" will repaint the screen and
screen behaviour returns to normal without any loss of any running program.
Expected Results:
Thunderbird should always allow composing a new mail or reply without kwin
crashing and locking up the desktop
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