Public bug reported:
After upgrading kubuntu 15.04 to Plasma 5.3 from the backports PPA, KWin
crashes in rapid succession and I get a dialog (translated from German) "KWin
is unstable. It seems it crashed multiple times in a row. You can choose
another window manager:"
The dropdown however only offers "kwin_x11".
Please see the attached backtrace, hope it is useful.
Most of the time, the startup screen hangs forever at about 80%.
Switching to a console and "killall startkde" and trying to log in again
sometimes goes further, and then the KWin crashes occur.
** Affects: kubuntu-ppa
Importance: Undecided
Status: New
** Attachment added: "KWinCrash.txt"
https://bugs.launchpad.net/bugs/1457692/+attachment/4402111/+files/KWinCrash.txt
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https://bugs.launchpad.net/bugs/1457692
Title:
KWin frequent crashes after upgrade to Plasma 5.3
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