@Eugene Hey, you can extract a signed shim from http://ppa.launchpad.net/ubuntu-uefi-team/ppa/ubuntu/dists/impish/main/signed/shim-amd64/15.4-0ubuntu3~uefi3/ once it's there.
You'll have to import the control/uefi.crt into your UEFI DB to test it.
@Eugene Hey, you can extract a signed shim from http:// ppa.launchpad. net/ubuntu- uefi-team/ ppa/ubuntu/ dists/impish/ main/signed/ shim-amd64/ 15.4-0ubuntu3~ uefi3/ once it's there.
You'll have to import the control/uefi.crt into your UEFI DB to test it.