I have the same issue, + 1 to disabling window spread in unity tweak tools: solves the problem (at the expense of having no window spread)
-- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1462841 Title: window spread causes system logout Status in Unity: New Status in unity package in Ubuntu: Confirmed Bug description: Expect to happen: -window spread upon <super> w - no intempestive logout when tweaking window spread with the unity-tweak-tool What happened instead: -After installing unity tweak, turning ON the window spread caused a system logout when I clicked on any icon with multiple windows open. -A logout also happens if hot corners is enabled with the action set to window spread, and the mouse pointer directed to the preset hot corner. -A logout also happened when i press <super>-w but in an unpredictable manner (<super> w sometimes have the desired effect without logout) ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: unity-tweak-tool 0.0.6ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-49.83-generic 3.13.11-ckt17 Uname: Linux 3.13.0-49-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.14.1-0ubuntu3.10 Architecture: amd64 CurrentDesktop: Unity Date: Mon Jun 8 09:49:51 2015 InstallationDate: Installed on 2013-08-29 (647 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) PackageArchitecture: all SourcePackage: unity-tweak-tool UpgradeStatus: Upgraded to trusty on 2015-04-20 (48 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1462841/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp