Just add a comment here that I have a new fast PC + SSD + HD4000 graphics and I get both these problems on frequently updated Ubuntu 12.10. I "solved" the low graphics mode issue long ago by changing from lightdm to gdm. I have 2 screens and occasionally I boot up and get 1 black screen but I have found this corrects if I switch to a console terminal (i.e. ctrl+alt+f1) and then switch back to X (i.e. ctrl+alt+f7). Both these problems occur with or without xorg edgers ppa (which upgrades kernel to 3.7.0 currently). In fact I tried that ppa again today and still got a black screen.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1070150 Title: Intermittent black screen or low graphics mode message To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1070150/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs