Re: black screen on installer grub menu

["Thomas Schmitt" <scdbackup@gmx.net>]

Hi,

Will Senn wrote:
>  As it turns out, I "fix" the already fixed iso.

A classical race condition. :))

At least you tested that
  https://wiki.debian.org/RepackBootableISO
still works. (3 Debian releases happened since it was written.)

Could you make a boot test with

  https://cdimage.debian.org/debian-cd/current-live/amd64/iso-hybrid/debian-live-13.1.0-amd64-standard.iso

whether it boots up to a GRUB screen. (This is the smallest Debian Live
ISO, which has no graphical desktop.)


Why i ask:

I do not see the workaround in  debian-live-13.1.0-amd64-standard.iso .
Its
  /boot/grub/grub.cfg
sources
  /boot/grub/config.cfg
which contains the line
  terminal_output gfxterm
Before that line it sources
  /boot/grub/theme.cfg
But it does not look as if any *.cfg under /boot uses the "echo"
command.
I also mounted /mnt/iso/boot/grub/efi.img as /mnt/fat and looked into
/mnt/fat/boot/grub/grub.cfg , which is the first .cfg loaded by GRUB
during EFI booting. No "echo".

  https://bugs.debian.org/cgi-bin/pkgreport.cgi?repeatmerged=no&src=live-build
shows no bug report about black screen on booting.
The live ISO shows with
  xorriso -indev debian-live-13.1.0-amd64-standard.iso -pvd_info
the line
  Creation Time: 2025090609425500
which says that it was made on 06 Sep 2025 09:42:55 UTC at the same day
as installation DVD-1 (06 Sep 2025 12:06:12) and netinst (06 Sep 2025
10:27:20).

So the problem might still be present in debian-live.


Have a nice day :)

Thomas