I did install Ubuntu edgy on a green iMac 350 (see attached cpuinfo below for details) and I am having the same troubles as the original poster.
** Attachment added: "some system specs" http://librarian.launchpad.net/5111693/imac -- Green Imac g3 powers on again https://launchpad.net/bugs/57069 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
