I was having this issue on an HP Z800 workstation. Specifically, the Lucid kernel worked fine, but Maverick or Natty would crash (cause a reboot) very quickly after making the grub menu selection.
Same symptom with the Natty Live CD. acpi=off or nolapic allowed a normal boot. pci=nomsi did not, although with that, there was a hang rather than a reboot. I also tried the "intel-microcode" fix described by nanobyte above, but that did not work for me. Turns out I was running a very out-of-date BIOS. Everything is fine after flashing to the latest. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/626622 Title: daily maverick live cd won't boot with acpi on -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
