Public bug reported:

Hello!

I have a laptop with the AMD Ryzen 7840U CPU which has a 780M iGPU
running both Jammy-based and Noble-based distro elementary OS releases.

This issue occurs only with the Noble and not Jammy edition.

Upon bootup with the "quiet splash" params there is just a blank screen
and apparent hang which is prevented if I remove the "splash" option and
then I get the expected login screen just fine.

Note that I ran the following command on both Jammy and Noble:

sudo lsinitramfs /boot/initrd-6.8xxxxx | grep amdgpu

And I see the amdgpu module is present in the Jammy image but not the
Noble image.

So I appended "amdgpu" to the /etc/initramfs-tools/modules file and did:

sudo update-initramfs -uk all

Which resolves the issue for me with Noble as well.

Note both my Jammy and Noble installs are on the same kernel version
currently 6.8-xxx-40 although the amdgpu module is included in the Jammy
image but not the Noble one.

Thank you!

** Affects: ubuntu
     Importance: Undecided
         Status: New


** Tags: amdgpu noble

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https://bugs.launchpad.net/bugs/2077266

Title:
  Blank screen hang on bootup with Ryzen 7840U iGPU with Noble

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