During boot, the display momentarily blackens, and the keyboard ceases to accept input. Why?

Framework Laptop 16 Linux
1

The Problem And Its Context

I have the boot storage device encrypted (I believe, with LUKS), which means that at boot, either Plymouth renders a GTK entry form, or dmesg renders a textual prompt for me to enter my decryption password. However, at that moment, the display always goes black for ≈ 2 seconds:

Why? Is this the OS’s fault, or does the display refresh for a reason related to its hardware?

I ask because:

  1. I frequently enter my password incorrectly due to it, since keyboard input ceases whilst it’s black.

  2. It was at this point that my mainboard last died, so it makes me nervous:

Template Prerequisites (The Environment)

  1. Which Linux distro are you using?

    NAME="Fedora Linux"
VARIANT="KDE Plasma Desktop Edition"

    [1]

  2. Which release version?

    VERSION_ID="42"

    [1:1]

    CPE_NAME="cpe:/o:fedoraproject:fedora:42"

  3. If rolling release, last date updated?

    dnf history list corroborates +2025-06-22T21:04:26+01:00.

  4. Which kernel are you using?

    Linux (6.14.11-300.fc42.x86_64, per rpm -qa).

  5. Which BIOS version are you using?

    sudo dmidecode -t bios -q returns Version: 03.05.

  6. Which Framework Laptop 16 model are you using? (AMD Ryzen™ 7040 Series)

    kinfo returns:

    Processors: 16 × AMD Ryzen 7 7840HS w/ Radeon 780M Graphics
Memory: 32 GiB of RAM (30.6 GiB usable)
Graphics Processor: AMD Radeon 780M
Manufacturer: Framework
Product Name: Laptop 16 (AMD Ryzen 7040 Series)
System Version: A7

  1. cat /etc/os-release ↩︎ ↩︎

2

I have the exact same problem, on the exact same system. The black screen happens 3 seconds later after starting to type the password which result in a password failure, and a second attempt to enter the password again. This is sooo annoying.
I was about to think about adding the pass phrase to the tpm chip to get rid of it … I just need to have some free time to look for it anytime soon.

1 Like
3

@Aurelien_D, are you using Fedora? If so, I can try filing a report to them (once I’ve got confirmation there that others with other laptops are it, maybe):

4

Yes the very same, Fedora 42.

1 Like
5

@Aurelien_D, thanks. I’ve asked there, to confirm whether it affects solely this laptop:

1 Like