Public bug reported: Hello! My environment: Windows Server 2016 Standart Hyper-V: Сontainer Gen 2: Security Check EFI - Off
Distribution OS: ubuntu-18.04.3-live-server-amd64.iso Distribution OS: xubuntu-18.04.3-desktop-amd64.iso My experiments have shown that these packages are the cause of the breakdown: grub-efi-amd64-signed amd64 1.93.16+2.02-2ubuntu8.15 grub-efi-amd64 amd64 2.02-2ubuntu8.15 grub-efi-amd64-bin amd64 2.02-2ubuntu8.15 grub2-common amd64 2.02-2ubuntu8.15 grub-common amd64 2.02-2ubuntu8.15 With package version 2.02-2ubuntu8.14, everything is fine. grub-efi-amd64-signed (1.93.15+2.02-2ubuntu8.14) What the breakdown leads to: After the reboot, a black bootloader screen appears. GNU GRUB version 2.02 *Ubuntu Advanced options for Ubuntu System setup Selecting any option returns back to the option selection. Starting the kernel manually also returns to the selection of options. A clean installation of the OS Ubuntu Server 18.04.3 amd64 during installation installs updates and leads to the same result. A clean installation of the OS Xubuntu 18.04.3 works without an Internet connection, but after starting updates on the system itself, the result is the same. Common bootloader recovery methods do not help. ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871771 Title: grub2 broken after update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1871771/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs