I upgraded from Jaunty (not Intrepid as I wrote above). When booting in the recovery mode, the last message I see before the boot hangs is: "ACPI: EC: missing configuration, switch off interrupt mode."
In addition to all duplicates, I have found other reports that might have something to to with the problem: #338083, #454268. -- Can't install Ubuntu 9.10, hangs before installing https://bugs.launchpad.net/bugs/459198 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