What happens is that the initramfs that is built by virtue of linux-image-$abi is named corresponding to the linux-image-$abi kernel, not the differently-file-named linux-signed-image-$abi kernel. Could this be an update-grub2 issue where it can't find the initramfs that it should because of the naming difference? (And no, I did not do a forced install, I'd have known it if I did pull such a stunt :)
What happens is that the initramfs that is built by virtue of linux-image-$abi is named corresponding to the linux-image-$abi kernel, not the differently- file-named linux-signed- image-$ abi kernel. Could this be an update-grub2 issue where it can't find the initramfs that it should because of the naming difference? (And no, I did not do a forced install, I'd have known it if I did pull such a stunt :)