[Bug 67487] Re: [edgy][regression][rv280] black screen and console freeze when X starts

[Tormod Volden]

For everyone to try, if you boot with "break=bottom" (maybe remove "splash" and "quiet" while you're at it), you get a command line shell. You can then edit xorg.conf with: chroot /root nano /etc/X11/xorg.conf
After saving and quitting the editor, you can type "exit" (or ctrl-D) to let the boot continue and X start. This way you can disable options or change driver. If you set the driver to "vesa" it should be equivalent to Safe Graphics Mode.

Do the locked-up machines react to sysrq combinations? Christian, maybe
you can check this? If so, please try to get a kernel trace.
https://help.ubuntu.com/community/DebuggingSystemCrash

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[edgy][regression][rv280] black screen and console freeze when X starts
https://launchpad.net/bugs/67487