I appear to have the same problem with my plain vanilla Compaq C700 laptop (Celeron 560 processor, integrated graphics), except for the small oddity that the boot process stalls with two side-by-side static Ubuntu logos displayed in the top half of the screen, rather than having an entirely dark screen.
I can't now be certain which version of the kernel introduced the problem. I know that 2.6.35.6 (the original Alpha 2 version) worked OK, and I know that the problem has persisted through versions -9 and -10. To date, I have worked around the issue simply by booting in recovery mode and manually restarting the X system. -- [ATI] GPU lockup with gfxpayload=keep https://bugs.launchpad.net/bugs/605614 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs