I have the same problem with a Dell Vostro 1000 laptop with the SB600 ATI southbridge, R482 northbridge and Sempron 3600+ cpu.
The boot stops with the message about modules.dep when I try to use an USB key. The use of noacpi=off and related options don't solve the problem. The trick of removing the USB key and replugging it 1 second after worked. -- Ubuntu 9.04 beta desktop fails to boot from usb-stick https://bugs.launchpad.net/bugs/350946 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