amdgpudrmfb fails to init on SolidRun Honeycomb

[Liz Fong-Jones]

https://patchwork<email address hidden>/ needs to be backported into the Ubuntu 5.4 kernel train in order for amdgpudrmfb to successfully initialize. Otherwise, the last line seen on framebuffer is `fb0: switching to amdgpudrmfb from EFI VGA` and then the boot freezes.

I have tested this as a patchest against the 5.7 kernel series, and will also patch & build against the Ubuntu 5.4 kernel series.

[Liz Fong-Jones (lizthegrey)]

This also would be fixed by rebasing on 5.4.52 from upstream.

[Liz Fong-Jones (lizthegrey)]

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.4.y&id=5800b7f7d2316d0defc5288eb62907460dd275e1 is the backport commit upstream

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1888410

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Liz Fong-Jones (lizthegrey)]

This bug will be solved by #1885322 which rebases 5.4.49, containing the PCI patchset.

[Liz Fong-Jones (lizthegrey)]

Can confirm the patched kernel at https://launchpad.net/~lizthegrey/+archive/ubuntu/kernel/+build/19618859 works.

[Liz Fong-Jones (lizthegrey)]

And can confirm `linux-image-5.4.0-43-generic` works fine. Thanks for the SRU kernel, Ubuntu team!