12:01 <stgraber> ok, so I've got a patched shim that can log into nvram variables, that should make tracking the hang down a bit easier 12:32 <stgraber> and debugged as far as I can without getting any real shim knowledge 12:32 <stgraber> that is, I tracked it down to the exact line where it's hanging 12:33 <stgraber> http://paste.ubuntu.com/5962449/ is what I've been working with 12:33 <stgraber> after boot, I'm getting: 12:33 <stgraber> verify_buffer: debug 1a 12:34 <stgraber> so it appears it actually hangs on the Print() call in the error case of that first check in verify_buffer 12:34 <stgraber> possibly because grub prevents it from printing anything (as we've seen with your other test build) 12:57 <stgraber> found the issue, though it's pretty scary 12:57 <stgraber> commenting the Print() call makes my laptop boot just fine 12:57 <stgraber> may be related to some console state change triggered by grub or as Colin suggested in #ubuntu-installer, a memory allocation bug in the firmware's implementation of Print() 12:58 <stgraber> anyway, patching the shim not to print stuff to the screen seems like our easiest fix for this mess
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1087501 Title: Unable to boot unsigned kernel, boot freezes in shim call To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1087501/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
