I have Radeon9600 and I get the same error in Edgy using the fglrx driver. I solved the bug by removing "splash" to the kernel boot parameters (look at you /boot/grub/menu.lst file for this).
This bug wasn't presented in Dapper. What's new with splash in Edgy? Maybe Xorg and fglrx is the problem and not the splash? -- [X600] Black screen with DRI https://launchpad.net/bugs/35601 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs