Package: linux-image-amd64
Version: 5.10.120-1
Severity: important
X-Debbugs-Cc: a...@users.sourceforge.net

Dear Maintainer,

none of the kernel images show any text output (including encryption prompts) 
on any
screen as long as the laptop is on a working docking station. I have to remove 
the
computer from the station (or power off the station) so I can tell when to 
enter the
harddisk encryption passwords.

It does not matter which display is used for primary output, the effect is the 
same. After
Grub, the screen goes blank first with the backlight on, then goes totally dark.

If I enter the encryption passwords blindly and correctly at the right moment, 
the kernel
boots without problems.

I have tried video=efifb/i810fb/intelfb/LVDS-1:1366x768@60e etc. to no avail.

Boot messages show up normally without the docking station (and in the logs).

Grub, Wayland, X, Gnome etc. work without problems.


-- System Information:
Debian Release: 11.3
  APT prefers stable-security
  APT policy: (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.10.0-15-amd64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_WARN
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_IE:en
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-image-amd64 depends on:
ii  linux-image-5.10.0-15-amd64  5.10.120-1

linux-image-amd64 recommends no packages.

linux-image-amd64 suggests no packages.

-- debconf-show failed

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