Fabio, I think the right parameter is "radeon.modeset=0" (and not "radeon.nomodeset=0") as reported in https://wiki.ubuntu.com/X/KernelModeSetting . ADR, which parameter have you try?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/766292 Title: [radeon.nomodeset=0] natty beta2 not starting with ati card -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs