The issue may be related to an update of "linux-firmware" package. Laptop is a Latitude E7450 (062E) with Dell BIOS A13 version in Secure Boot mode.
lsb_release -rd Description: Ubuntu 18.04.4 LTS Release: 18.04 Update of grub-efi-amd64-signed package: Paramétrage de grub-efi-amd64-signed (1.93.16+2.02-2ubuntu8.15) ... Installation pour la plate-forme x86_64-efi. Could not delete variable: Invalid argument grub-install : erreur : efibootmgr n'a pas réussi à enregistrer l'entrée de démarrage: Bloc de périphérique requis. (translation: efibootmgr failed to register the boot entry: Block device required.) @tormec: when you say you have to enter "Recovery Mode", is it a suggested option following a reboot? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1869558 Title: after the update of "grub-efi-amd64-signed 1.93.16+2.02-2ubuntu8.15" ubuntu doesn't boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1869558/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
