Can you follow the "Boot options" instructions on the following wiki to enable additional output on boot:
https://wiki.ubuntu.com/DebuggingKernelBoot As mentioned on the wiki, it would be great if you can attach a log file which may have captured any messages you see. If you are unable to capture a log file, a digital photo will work just as well. As a last resort you can even copy messages down by hand. ** Changed in: linux (Ubuntu) Importance: Medium => High ** Changed in: linux (Ubuntu) Status: Triaged => Confirmed ** Also affects: linux (Ubuntu Precise) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Quantal) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Raring) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Saucy) Importance: High Status: Confirmed ** Changed in: linux (Ubuntu Raring) Importance: Undecided => High ** Changed in: linux (Ubuntu Quantal) Importance: Undecided => High ** Changed in: linux (Ubuntu Precise) Importance: Undecided => High ** Changed in: linux (Ubuntu Raring) Status: New => Confirmed ** Changed in: linux (Ubuntu Quantal) Status: New => Confirmed ** Changed in: linux (Ubuntu Precise) Status: New => Confirmed ** Tags added: quantal raring saucy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/978891 Title: ubuntu 12.04 doesn't boot when usb device plugged in (except usb mouse) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/978891/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
