[bug #39246] GRUB2 hangs at boot menu with HT and USB emulation enabled

[Robert Hancock]

URL:
  <http://savannah.gnu.org/bugs/?39246>

                 Summary: GRUB2 hangs at boot menu with HT and USB emulation
enabled
                 Project: GNU GRUB
            Submitted by: robhancock
            Submitted on: Thu 13 Jun 2013 03:58:11 AM GMT
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: other
         Reproducibility: Every Time
         Planned Release: None

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Details:

On a Dell Dimension 4600 with the (latest) A12 BIOS, with HyperThreading
enabled in the BIOS and the USB Emulation option enabled (by default), grub2
in Fedora 18 (grub2-2.00-15.fc18.i686) reaches the boot selection menu but
then freezes up and won't respond to any keys. Disabling either HT or the USB
Emulation option results in grub2 working normally. Presumably USB Emulation
is needed to use a USB keyboard in the boot menu, however.

Also see Fedora bug report here:
https://bugzilla.redhat.com/show_bug.cgi?id=854098




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