OK, thanks. I don't know why that happens. It never fails like that for me but other people have reported the problem you describe.
Next we try an alternative approach: 1. kill -ABRT `pidof -s gnome-shell` 2. Look in /var/crash for a new crash file (may take a little while to be written) 3. ubuntu-bug /var/crash/YOURFILE.crash 4. Tell us the new bug ID created. -- 5. If #3-4 failed then set this bug to Private (top right of the page) and attach the crash file here. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1749779 Title: System freeze when going back and forth fullscreen mode with Firefox To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1749779/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs