This has been reported in the ISO tracker as affecting the 18.04.6 candidate images (20210913):
http://iso.qa.ubuntu.com/qatracker/milestones/426/builds/236713/testcases
The reported issue happens on bare metal. In QEMU/KVM the 20210913 bionic-live-server-amd64 images work fine with secureboot enabled (checked via `mokutil --sb-state` in both the installer and installed systems).
This has been reported in the ISO tracker as affecting the 18.04.6 candidate images (20210913):
http:// iso.qa. ubuntu. com/qatracker/ milestones/ 426/builds/ 236713/ testcases
The reported issue happens on bare metal. In QEMU/KVM the 20210913 bionic- live-server- amd64 images work fine with secureboot enabled (checked via `mokutil --sb-state` in both the installer and installed systems).