Disabling sna seems to fix this for now if you have this problem with Intel Integrated Graphics:
/etc/X11/xorg.conf.d/20-intel.conf Section "Device" Identifier "Card0" Driver "Intel" Option "AccelMethod" "uxa" EndSection -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1295267 Title: Windows change Monitor/Desktop after screen lock To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1295267/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs