package:grub-efi-amd64-signed:1.142.4+2.04-1ubuntu26.2 Setting up grub-efi-amd64-signed (1.142.1+2.04-1ubuntu26) ... Trying to migrate /boot/efi into esp config Installing grub to /boot/efi. Installation pour la plate-forme x86_64-efi. grub-install : attention : Impossible de définir la variable EFI Boot0003. grub-install : attention : efivarfs_set_variable: writing to fd 8 failed: Argument invalide. grub-install : attention : _efi_set_variable_mode: ops->set_variable() failed: Argument invalide. grub-install : erreur : failed to register the EFI boot entry: Argument invalide. Gdk-Message: 10:07:58.925: frontend: Fatal IO error 11 (Ressource temporairement non disponible) on X server :0. dpkg: error processing package grub-efi-amd64-signed (--configure): installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1