The problem was solved using the grub 2.11 directly from https://git.launchpad.net/grub hash 246d69b7ea619fc1e77dcc5960e37aea45a9808c
https://savannah.gnu.org/bugs/?61364#comment2 ** Bug watch added: GNU Savannah Bug Tracker #61364 http://savannah.gnu.org/bugs/?61364 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1903442 Title: booting from grub uefi pxe and chainloading to ipxe.efi via network doesn't work in recent versions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1903442/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs