the problem disappears after I switch from nvidia 340.96 back to xorg driver.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1550793 Title: unity freezes after resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1550793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs