Recompiled the kernel with Dapper default .config except enabled radeonfb debug. Here's a successful boot dmesg.
** Attachment added: "Successful boot dmesg." http://librarian.launchpad.net/4290135/dmesgok -- radeonfb fails to probe EDID on a PowerBook G4 (TiBook) https://launchpad.net/bugs/60685 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs