Are you able to test mesa 10.2 from xorg-edgers ppa, to know if this is fixed upstream..
https://launchpad.net/~xorg-edgers/+archive/ppa -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1299499 Title: kwin crashes on desktop startup with wobbly windows enabled To manage notifications about this bug go to: https://bugs.launchpad.net/mesa/+bug/1299499/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs