more on comment #23 and comment #24 the most up-to-date qt could reproduce this bug
--- more information --- checkbox-gui: Installed: 0.17.9~dev+bzr3053+pkg2~ubuntu14.10.1 Candidate: 0.17.9~dev+bzr3063+pkg2~ubuntu14.10.1 Version table: 0.17.9~dev+bzr3063+pkg2~ubuntu14.10.1 0 500 http://ppa.launchpad.net/checkbox-dev/ppa/ubuntu/ utopic/main amd64 Packages *** 0.17.9~dev+bzr3053+pkg2~ubuntu14.10.1 0 100 /var/lib/dpkg/status 0.17.6-0ubuntu6 0 500 http://tw.archive.ubuntu.com/ubuntu/ utopic/main amd64 Packages libqt5core5a: Installed: 5.3.0+dfsg-2ubuntu1 Candidate: 5.3.0+dfsg-2ubuntu1 Version table: *** 5.3.0+dfsg-2ubuntu1 0 500 http://ppa.launchpad.net/ci-train-ppa-service/landing-005/ubuntu/ utopic/main amd64 Packages 100 /var/lib/dpkg/status 5.3.0+dfsg-2ubuntu1~utopic1~test2 0 500 http://ppa.launchpad.net/canonical-qt5-edgers/qt5-beta2/ubuntu/ utopic/main amd64 Packages 5.2.1+dfsg-1ubuntu17 0 500 http://tw.archive.ubuntu.com/ubuntu/ utopic/main amd64 Packages Distributor ID: Ubuntu Description: Ubuntu Utopic Unicorn (development branch) Release: 14.10 Codename: utopic 3.15.0-5-generic tested on CID 201402-14684 00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) 08:00.0 3D controller [0302]: NVIDIA Corporation GF117M [GeForce 610M/710M/820M / GT 620M/625M/630M/720M] [10de:1140] (rev a1) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: checkbox-gui crashed when switching video out mode to external only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs