Hi Steve, > Are you using Secure Boot on this machine? Yes:
[root@skynet : ~] dmesg | grep secu [ 0.000000] secureboot: Secure boot enabled > Can you please confirm if going back to the previous > versions of the Grub packages fixes the problem for you? I can confirm that performing the following downgrade fixes the problem: [DOWNGRADE] grub-common:amd64 2.02+dfsg1-20+deb10u1 -> 2.02+dfsg1-20 [DOWNGRADE] grub-efi-amd64:amd64 2.02+dfsg1-20+deb10u1 -> 2.02+dfsg1-20 [DOWNGRADE] grub-efi-amd64-bin:amd64 2.02+dfsg1-20+deb10u1 -> 2.02+dfsg1-20 [DOWNGRADE] grub-efi-amd64-signed:amd64 1+2.02+dfsg1+20+deb10u1 -> 1+2.02+dfsg1+20 [DOWNGRADE] grub2-common:amd64 2.02+dfsg1-20+deb10u1 -> 2.02+dfsg1-20 Also, I have seen posts on reddit complaining about the same problem so it's not just me. Janek
