As said before it worked some weeks ago and still works on a 20.04.5 live usb. So there is something broken in the 21.04 setup of the whole grub/kernel/efi stuff.
I stumbled about the releasenotes from 21.04 now talking about some shim issue. and i found https://bugs.launchpad.net/ubuntu/+source/shim- signed/+bug/1925010 and https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1925064. I have the error "efi: Failed to lookup EFI memory descriptor for 0x00000000d75f2000" in the logs like which seems to releate here: https://bugs.launchpad.net/ubuntu/+source/shim-signed/+bug/1925139 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1924605 Title: Grub2 menu not loading - could not create MokListXRT To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1924605/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
