Public bug reported: The statement in grub-core/lib/relocator.c:591: grub_mm_base = NULL; causes my system to lock-up when booting in EFI mode. I have determined this through liberal placement of grub_dprintf's, and eventually by commenting out the offending line.
By commenting this line out, I am able to progress further in the boot sequence. At this point, I am still unable to boot in EFI mode, however, I'm not sure whether this part is due to grub, or linux: it occurs much closer to the hand-off, and I have yet to determine whether it's related to this bug, or not. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: grub-efi-amd64 2.00-7ubuntu11 ProcVersionSignature: Uname: Linux 3.7.0-rc4 x86_64 ApportVersion: 2.6.1-0ubuntu6 Architecture: amd64 Date: Sun Nov 18 20:44:19 2012 MarkForUpload: True ProcEnviron: TERM=screen-bce PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: grub2 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug quantal third-party-packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1080521 Title: Assignment gnub_mm_base = NULL in relocator.c causes boot hang To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1080521/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs