[Bug 2072153] Re: LUKS/Cryptsetup shows blank screen on boot in noble

[Daniel van Vugt]

Next time you are stuck on the blank screen, try tapping the Escape key
to switch to text mode. It should be possible to unlock from there.

If that worked then you might also try tapping the Escape key multiple
times to see if you can get the boot graphics to appear.

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https://bugs.launchpad.net/bugs/2072153

Title:
  LUKS/Cryptsetup shows blank screen on boot in noble

Status in plymouth package in Ubuntu:
  Incomplete

Bug description:
  After upgrading from Ubuntu 23.10 to 24.04, I get a blank screen at
  boot instead of the password prompt. I can enter my password blindly
  and boot into X as usual, but nothing I have tried for getting the
  password prompt has worked.

  I'm on a Thinkpad T580, with an NVIDIA GeForce MX150. I'm on the
  nvidia driver version 555.52.04 from the graphics drivers ppa.

  I have tried various combinations of:
  - not having driver version 555 installed (It was left at the old version on upgrade
  - modding grub to say nosplash, gfxmode=auto or gfxmode=text or gfxmode=wxh (all gave me text, but also a kernel panic about synaptics drivers)
  - modding grub to say nomodeset, and/or nvidia.modeset=0

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