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[Bug 1450137] Re: Qt5 applications crash when switching screens

 

This has affected all Plasma 5 releases in Kubuntu since Utopic,
including the current backport of Plasma 5.3.

It reliably triggers a cascade of crashes in at least krunner, plasma
and kwin on every screen topology change, making for a very
disconcerting user experience.

Please consider cherry-picking https://codereview.qt-
project.org/#/c/111100/ for Qt < 5.4.2, Fedora and OpenSUSE have already
done so.

You can find more details in https://bugs.kde.org/show_bug.cgi?id=345544
.

** Bug watch added: KDE Bug Tracking System #345544
   https://bugs.kde.org/show_bug.cgi?id=345544

** Also affects: plasma-workspace (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: kwin (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1450137

Title:
  Qt5 applications crash when switching screens

Status in kwin package in Ubuntu:
  New
Status in plasma-workspace package in Ubuntu:
  New
Status in qtbase-opensource-src package in Ubuntu:
  Confirmed

Bug description:
  When switching screens (e. g. when putting the laptop onto the docking
  station the notebook screen is turned off and the external one is
  turned on) Qt5 applications (including plasmashell) quite often crash.
  This makes my laptop unusable, since I do that very frequently.

  The problem has already been described here: https://bugs.kde.org/show_bug.cgi?id=341497
  Apparently it is fixed in Qt 5.5

  I am running Kubuntu 15.04 64bit and libqt5gui5 5.4.1+dfsg-2ubuntu4.

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References