grub2-signed and grub2-unsigned are source package names. You are searching for binary package names.... binary package name is grub-efi-amd64-signed
** Changed in: grub2 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1931595 Title: Compression type 0x3 not supported To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1931595/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs