Ming Lei has identified that this issue is fixed with the following upstream grub patch:
commit 49426e9fd2e562c73a4f1206f32eff9e424a1a73 Author: Andrei Borzenkov <arvidj...@gmail.com> Date: Thu May 7 20:37:17 2015 +0300 efinet: open Simple Network Protocol exclusively The next step is to backport this patch into Wily and probably also Trusty. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1508893 Title: TFTP timeout on ARM64 hw when booting from grub that was PXE loaded To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1508893/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs