I had the same problem with my HP dv2z. I got around it by using a much older USB 1.0 external 4x CD-ROM drive. It gave the modprobe error once, but then continued fine with the rest of the boot & install of 9.04.
-- 9.04 fails to boot on HP DV2-1030US laptop https://bugs.launchpad.net/bugs/366678 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs