I have exactly the same bug. It also happens with a Radeon HD 6850 with fglrx drivers installed.
"1) There are some weird graphical artifacts near the top of the screen that change as I type in my password." This happens to me aswell. Afther this, lightdm restarts or crashes with a black screen. It also appears to be completely random, happens about 1/3 of the time I start up the computer. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/874218 Title: LightDM restarts after first login attempt To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/874218/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
