#1107685 grub-efi-amd64: "GRUB_CMDLINE_LINUX_DEFAULT="quiet" incorrectly added to /etc/default/grub during upgrade

Package:
grub-efi-amd64
Source:
grub-efi-amd64
Description:
GRand Unified Bootloader, version 2 (EFI-AMD64 version)
Submitter:
Dutchy
Date:
2025-06-12 23:07:01 UTC
Severity:
normal
#1107685#5
Date:
2025-06-12 03:47:39 UTC
From:
To:
Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

This morning, grub-efi-amd64-unsigned:amd64 (2.12-7, 2.12-8), grub-efi-
amd64:amd64 (2.12-7, 2.12-8), grub-efi-amd64-signed:amd64 (1+2.12+7,
1+2.12+8),
grub-efi-amd64-bin:amd64 (2.12-7, 2.12-8), grub2-common:amd64 (2.12-7,
2.12-8),
grub-common:amd64 (2.12-7, 2.12-8) were upgraded.

I was shown a configuration confirmation on what to do with a config file (I
think it was /etc/default/grub, but not sure).

I chose to keep installed (my modified file), however it was still partially
over written with the additional line GRUB_CMDLINE_LINUX_DEFAULT="quiet".

I had previously # this line in grub which was still here and still #.

I removed the added line GRUB_CMDLINE_LINUX_DEFAULT="quiet", did an update-
grub
and boot again shows the print.
#1107685#10
Date:
2025-06-12 06:24:30 UTC
From:
To:
Found this in /var/log/apt/term.log:

Setting up grub-efi-amd64 (2.12-8) ...
[?1049h[?25l(B





























Package
configuration┌────────────────────────────────────
┤ Configuring grub-efi-amd64
├────────────────────────────────────┐│ A new version (/tmp/
grub.3CSVpiA6kc) of configuration file /etc/default/grub is available, but the   │
│ version installed currently has been locally modified.
│ │
│ │ What do you want to do about modified configuration
file grub?                                       │ │
│ │                         install the package maintainer's version
│ │                         keep the local version
currently installed                                   │ │
show the differences between the versions                                    │
│                         show a side-by-side difference between the versions
│ │                         show a 3-way difference between
available versions                           │ │                         do a
3-way merge between available versions                                  │
│                         start a new shell to examine the situation
│ │
│ │
│ │                                                <Ok>
│ │
│
└────────────────────────────────────────────
──────────────────────────────────────────────────────────
┘ 
[?12l[?25h(B

[?1049lInstalling for x86_64-efi platform.
Installation finished. No error reported.
#1107685#15
Date:
2025-06-12 06:07:55 UTC
From:
To:
Am Donnerstag, dem 12.06.2025 um 13:47 +1000 schrieb Dutchy:

Does /var/log/apt/term.log really shows that you choose to keep that
file?
I can't reproduce this. Just upgrade to the signed grub2 and my
/etc/default/grub is still the same
#1107685#20
Date:
2025-06-12 06:43:44 UTC
From:
To:
Am Donnerstag, dem 12.06.2025 um 13:47 +1000 schrieb Dutchy:

Ah sorry.
The problem seems to be that you have set in debconf
grub2/linux_cmdline_default: quiet

Please run
sudo dpkg-reconfigure -p low grub-efi-amd64
and remove the quiet in the debconf prompt.
#1107685#25
Date:
2025-06-12 23:04:38 UTC
From:
To:
The debconf value is supposed to be updated from /etc/default/grub.
I suspect that the line should not be commented out. If you want to
remove "quiet" from the kernel command line, just set

GRUB_CMDLINE_LINUX_DEFAULT=""
#1107685#30
Date:
2025-06-12 23:04:38 UTC
From:
To:
The debconf value is supposed to be updated from /etc/default/grub.
I suspect that the line should not be commented out. If you want to
remove "quiet" from the kernel command line, just set

GRUB_CMDLINE_LINUX_DEFAULT=""