Upstream has a patch that may fix this bug: https://git.kernel.org/cgit/linux/kernel/git/efi/efi.git/commit/?h=urgent&id=090abfc9dc7faf3f84799f956158c8c3af149a81
I built a test kernel with this patch applied. The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1659340/patched/ Can you try this kernel and see if it resolves this bug? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1659340 Title: Linux kernel 4.8 hangs at boot up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1659340/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs