Ubuntu 20.04.6 LTS apt problems - how to upgrade f/w?

[Ralf Mardorf]

On Wed, 2024-11-27 at 16:31 +0100, Bo Berglund wrote:
> I want to make sure that my *server* ALWAYS starts when power is
> applied or reboot is commanded or the reset button is pressed.
> 
> It should not go into something else if the user had briefly switched
> to that earlier.

Hi,

I don't know what you need to edit, when using GRUB's config for GRUB's
auto-doodad. If you edit grub.cfg manually, as I use to do, then

  set default=n

does the trick. In the below example

  set default="1"

does always auto-select the second entry "MemTest86 V11+ Free". Whatever
was manually selected before, "Arch Linux" or one of my  Ubuntu flavours
(head > 27 ;), the GRUB menu's default is always "MemTest86 V11+ Free".

  • rocketmouse at archlinux ~ 
  $ head -27 /boot/grub/grub.cfg
  play 1920 440 1 0 1 880 2 0 1 880 1 0 1 440 2
  set timeout=60
  set color_normal=light-gray/black
  set color_highlight=white/light-gray
  set menu_color_normal=light-gray/black
  set menu_color_highlight=white/light-gray
  set default="1"
  insmod efi_gop

  menuentry " -- HAL 9000-m1 -----------------------------------------------------------------" {
          true
  }

  menuentry "    MemTest86 V11+ Free" {
          search --set=root --no-floppy --fs-uuid 3F5B-F698
          chainloader /EFI/memtest86/memtestx64.efi
  }

  menuentry " -- Arch Linux ------------------------------------------------------------------" {
          true
  }

  menuentry "    Arch Linux threadirqs" {
          search --no-floppy --set=root --label m1.archlinux
          linux /boot/vmlinuz-linux root=/dev/disk/by-label/m1.archlinux ro threadirqs ibt=off ipv6.disable=1 kvm.enable_virt_at_load=0
          initrd /boot/intel-ucode.img /boot/initramfs-linux.img
  }

Regards,
Ralf