A workaround (at least fix the frozen desktop) without restarting, ending sessions, etc. is to switch to another tty (eg tty1 with CTRL- ALT-F1) and type:
DISPLAY=:0 kwin_x11 --replace & When switching back to the desktop, it is seen restarting and everything is working again. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1440210 Title: KWin crashes multiple times a day and often has to be restarted manually. To manage notifications about this bug go to: https://bugs.launchpad.net/kdebase-workspace/+bug/1440210/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs