OK, wasn't sure if it was X or the login manager. Not sure what the login manager WAS, looked it up, seems to be lightdm.
Next time it happened, I used kill on the lightdm for tty7, and presto, it's fixed. So, the problem is with lightdm, not X ** Package changed: ubuntu => lightdm (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1014475 Title: multiple logged in users causes X to be blank coming back from suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1014475/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
