If you could try the 1.47+15.4-0ubuntu2 binaries as well, that'd be great, you can find them via launchpad:
https://launchpad.net/ubuntu/+source/shim-signed/1.47/+build/21482148 If this fails, the issue is one of the three patches in there -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1936759 Title: shim-signed 1.48+15.4-0ubuntu5 does not secure boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim-signed/+bug/1936759/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
