This should finally be fixed in Qt 5.4.2 that is now in wily (Ubuntu 15.10).
There are some indications though that the problem is complex and some of the crasher cases are only fully addressed in Qt 5.5.0. This is on route to wily too although it might take time. See https://wiki.ubuntu.com/Touch/QtTesting on how to test Qt 5.5 if you still experience this problem on current wily's Qt 5.4.2. ** Changed in: qtbase-opensource-src (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtbase-opensource-src in Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode Status in Next Generation Checkbox (GUI): Confirmed Status in OEM Priority Project: Won't Fix Status in OEM Priority Project trusty series: Won't Fix Status in Qt: New Status in qtbase-opensource-src package in Ubuntu: Fix Released Bug description: checkbox-gui crashed with following console outputs: pure virtual method called terminate called without an active exception Aborted (core dumped) Steps to reproduce: 1. open checkbox-gui 2. connected external display 3. switch video output mode, usually by using the common video output switch hotkey. Expected result: checkbox-gui still running when switching back to extended desktop video out mode. Actual result: checkbox-gui crashed --- https://bugreports.qt-project.org/browse/QTBUG-39663 To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
