Created attachment 481848 [details] hangapp.py Description of problem: Metacity and compiz could detect when an application was unresponsive for several seconds and could offer the user to force quit the window. Mutter/gnome-shell does not seem to do that. Clicking the close button of an unresponsive window has no effect. Version-Release number of selected component (if applicable): gnome-shell-2.91.90-2.fc15.x86_64 mutter-2.91.90-2.fc15.x86_64 How reproducible: always Steps to Reproduce: 1. run the attached reproducer (a simple pygtk application) 2. click on the "Hang this application" button 3. try to close the window Actual results: Nothing happens, the window won't go away. Expected results: The window manager should offer me to force the closing of the window / kill the unresponsive application.
No changes, but yeah, doesn't seem to be working in a quick test here. Moved upstream.