This would indicate that the bug was introduced by a SAUCE patch in Trusty. We also know that this bug is fixed in Xenial, so there is another patch that fixes this regression that has not made it into Trusty.
I think the next step should be to identify the patch in Xenial and backport it to Trusty. Can you test the 3.19 based Vivid kernel? It can be downloaded from: https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/11760211 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649326 Title: EFI stub loader broken in kernel 3.13.0-101-generic (& later in 3.13 series) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1649326/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
