Bug#1134708: Responses to Pascal's comments

Donald Teed donald.teed at gmail.com
Thu Apr 23 17:26:55 BST 2026


Thanks for the follow up.  You're right about the dual BIOS/UEFI
systems, so my suggestion wouldn't work.  However we still have a problem
that grub setup generated a menu that results in :

GRUB loading.
Welcome to GRUB

There is no way to get a menu or anything in that context.  Required a
rescue DVD boot.
That's what was meant by stalled.

Here's the grub.cfg it generates while /etc/grub.d/30_uefi-firmware is
executable:

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  set have_grubenv=true
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}
function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
terminal_input console serial
terminal_output console serial
if [ "${recordfail}" = 1 ] ; then
  set timeout=30
else
  if [ x$feature_timeout_style = xy ] ; then
    set timeout_style=menu
    set timeout=5
  # Fallback normal timeout code in case the timeout_style feature is
  # unavailable.
  else
    set timeout=5
  fi
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
        set gfxpayload="${1}"
}
set linux_gfx_mode=
export linux_gfx_mode
menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu
--class os $menuentry_id_option
'gnulinux-simple-30b91b34-edee-4e65-948f-d991febc3252' {
        load_video
        insmod gzio
        if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
        insmod part_msdos
        insmod ext2
        set root='hd1,msdos1'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd1,msdos1
--hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1
 30b91b34-edee-4e65-948f-d991febc3252
        else
          search --no-floppy --fs-uuid --set=root
30b91b34-edee-4e65-948f-d991febc3252
        fi
        echo    'Loading Linux 6.12.74+deb13+1-amd64 ...'
        linux   /boot/vmlinuz-6.12.74+deb13+1-amd64
root=UUID=30b91b34-edee-4e65-948f-d991febc3252 ro  quiet
        echo    'Loading initial ramdisk ...'
        initrd  /boot/initrd.img-6.12.74+deb13+1-amd64
}
submenu 'Advanced options for Debian GNU/Linux' $menuentry_id_option
'gnulinux-advanced-30b91b34-edee-4e65-948f-d991febc3252' {
        menuentry 'Debian GNU/Linux, with Linux 6.12.74+deb13+1-amd64'
--class debian --class gnu-linux --class gnu --class os
$menuentry_id_option
'gnulinux-6.12.74+deb13+1-amd64-advanced-30b91b34-edee-4e65-948f-d991febc3252'
{
                load_video
                insmod gzio
                if [ x$grub_platform = xxen ]; then insmod xzio; insmod
lzopio; fi
                insmod part_msdos
                insmod ext2
                set root='hd1,msdos1'
                if [ x$feature_platform_search_hint = xy ]; then
                  search --no-floppy --fs-uuid --set=root
--hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1
 30b91b34-edee-4e65-948f-d991febc3252
                else
                  search --no-floppy --fs-uuid --set=root
30b91b34-edee-4e65-948f-d991febc3252
                fi
                echo    'Loading Linux 6.12.74+deb13+1-amd64 ...'
                linux   /boot/vmlinuz-6.12.74+deb13+1-amd64
root=UUID=30b91b34-edee-4e65-948f-d991febc3252 ro  quiet
                echo    'Loading initial ramdisk ...'
                initrd  /boot/initrd.img-6.12.74+deb13+1-amd64
        }
        menuentry 'Debian GNU/Linux, with Linux 6.12.74+deb13+1-amd64
(recovery mode)' --class debian --class gnu-linux --class gnu --class os
$menuentry_id_option
'gnulinux-6.12.74+deb13+1-amd64-recovery-30b91b34-edee-4e65-948f-d991febc3252'
{
                load_video
                insmod gzio
                if [ x$grub_platform = xxen ]; then insmod xzio; insmod
lzopio; fi
                insmod part_msdos
                insmod ext2
                set root='hd1,msdos1'
                if [ x$feature_platform_search_hint = xy ]; then
                  search --no-floppy --fs-uuid --set=root
--hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1
 30b91b34-edee-4e65-948f-d991febc3252
                else
                  search --no-floppy --fs-uuid --set=root
30b91b34-edee-4e65-948f-d991febc3252
                fi
                echo    'Loading Linux 6.12.74+deb13+1-amd64 ...'
                linux   /boot/vmlinuz-6.12.74+deb13+1-amd64
root=UUID=30b91b34-edee-4e65-948f-d991febc3252 ro single dis_ucode_ldr
                echo    'Loading initial ramdisk ...'
                initrd  /boot/initrd.img-6.12.74+deb13+1-amd64
        }
        menuentry 'Debian GNU/Linux, with Linux 6.1.0-38-amd64' --class
debian --class gnu-linux --class gnu --class os $menuentry_id_option
'gnulinux-6.1.0-38-amd64-advanced-30b91b34-edee-4e65-948f-d991febc3252' {
                load_video
                insmod gzio
                if [ x$grub_platform = xxen ]; then insmod xzio; insmod
lzopio; fi
                insmod part_msdos
                insmod ext2
                set root='hd1,msdos1'
                if [ x$feature_platform_search_hint = xy ]; then
                  search --no-floppy --fs-uuid --set=root
--hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1
 30b91b34-edee-4e65-948f-d991febc3252
                else
                  search --no-floppy --fs-uuid --set=root
30b91b34-edee-4e65-948f-d991febc3252
                fi
                echo    'Loading Linux 6.1.0-38-amd64 ...'
                linux   /boot/vmlinuz-6.1.0-38-amd64
root=UUID=30b91b34-edee-4e65-948f-d991febc3252 ro  quiet
                echo    'Loading initial ramdisk ...'
                initrd  /boot/initrd.img-6.1.0-38-amd64
        }
        menuentry 'Debian GNU/Linux, with Linux 6.1.0-38-amd64 (recovery
mode)' --class debian --class gnu-linux --class gnu --class os
$menuentry_id_option
'gnulinux-6.1.0-38-amd64-recovery-30b91b34-edee-4e65-948f-d991febc3252' {
                load_video
                insmod gzio
                if [ x$grub_platform = xxen ]; then insmod xzio; insmod
lzopio; fi
                insmod part_msdos
                insmod ext2
                set root='hd1,msdos1'
                if [ x$feature_platform_search_hint = xy ]; then
                  search --no-floppy --fs-uuid --set=root
--hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1
 30b91b34-edee-4e65-948f-d991febc3252
                else
                  search --no-floppy --fs-uuid --set=root
30b91b34-edee-4e65-948f-d991febc3252
                fi
                echo    'Loading Linux 6.1.0-38-amd64 ...'
                linux   /boot/vmlinuz-6.1.0-38-amd64
root=UUID=30b91b34-edee-4e65-948f-d991febc3252 ro single dis_ucode_ldr
                echo    'Loading initial ramdisk ...'
                initrd  /boot/initrd.img-6.1.0-38-amd64
        }
        menuentry 'Debian GNU/Linux, with Linux 6.1.0-37-amd64' --class
debian --class gnu-linux --class gnu --class os $menuentry_id_option
'gnulinux-6.1.0-37-amd64-advanced-30b91b34-edee-4e65-948f-d991febc3252' {
                load_video
                insmod gzio
                if [ x$grub_platform = xxen ]; then insmod xzio; insmod
lzopio; fi
                insmod part_msdos
                insmod ext2
                set root='hd1,msdos1'
                if [ x$feature_platform_search_hint = xy ]; then
                  search --no-floppy --fs-uuid --set=root
--hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1
 30b91b34-edee-4e65-948f-d991febc3252
                else
                  search --no-floppy --fs-uuid --set=root
30b91b34-edee-4e65-948f-d991febc3252
                fi
                echo    'Loading Linux 6.1.0-37-amd64 ...'
                linux   /boot/vmlinuz-6.1.0-37-amd64
root=UUID=30b91b34-edee-4e65-948f-d991febc3252 ro  quiet
                echo    'Loading initial ramdisk ...'
                initrd  /boot/initrd.img-6.1.0-37-amd64
        }
        menuentry 'Debian GNU/Linux, with Linux 6.1.0-37-amd64 (recovery
mode)' --class debian --class gnu-linux --class gnu --class os
$menuentry_id_option
'gnulinux-6.1.0-37-amd64-recovery-30b91b34-edee-4e65-948f-d991febc3252' {
                load_video
                insmod gzio
                if [ x$grub_platform = xxen ]; then insmod xzio; insmod
lzopio; fi
                insmod part_msdos
                insmod ext2
                set root='hd1,msdos1'
                if [ x$feature_platform_search_hint = xy ]; then
                  search --no-floppy --fs-uuid --set=root
--hint-bios=hd1,msdos1 --hint-efi=hd1,msdos1 --hint-baremetal=ahci1,msdos1
 30b91b34-edee-4e65-948f-d991febc3252
                else
                  search --no-floppy --fs-uuid --set=root
30b91b34-edee-4e65-948f-d991febc3252
                fi
                echo    'Loading Linux 6.1.0-37-amd64 ...'
                linux   /boot/vmlinuz-6.1.0-37-amd64
root=UUID=30b91b34-edee-4e65-948f-d991febc3252 ro single dis_ucode_ldr
                echo    'Loading initial ramdisk ...'
                initrd  /boot/initrd.img-6.1.0-37-amd64
        }
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###

### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/25_bli ###
if [ "$grub_platform" = "efi" ]; then
  insmod bli
fi
### END /etc/grub.d/25_bli ###

### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
if [ "$grub_platform" = "efi" ]; then
        fwsetup --is-supported
        if [ "$?" = 0 ]; then
                menuentry 'UEFI Firmware Settings' $menuentry_id_option
'uefi-firmware' {
                        fwsetup
                }
        fi
fi
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type
the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###

This shows there is no EFI:

# # Confirm no EFI on this system
# ls /sys/firmware/efi 2>/dev/null && echo "EFI present" || echo "No EFI"
No EFI
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