Comment # 37 on bug 1177428 from Takashi Iwai

Weird...  Could you try the following?

- Remove /lib/firmware/updates again, mkinitrd, and confirm that you get the
unbootable state again

- Boot with nomodeset, then run
  % unxz -f /lib/firmware/amdgpu/picasso*.xz
  mkinitrd, reboot and check whether it works now
(In reply to Karl Mistelberger from comment #35)
> (In reply to Takashi Iwai from comment #34)
> > Hmm.  The latest TW kernel-firmware package contains 20.40, so this should
> > have triggered the same problem.
> > 
> > Could you confirm the following?
> > - Remove /lib/firmware/updates/*
> > - Install again the latest TW kernel-firmware (20201008)
> > - mkinitrd and reboot
> 
> Boot fails.
>  
> > If this shows the boot problem, try to put picasso 20.40 firmware again
> > /lib/firmware/updates, mkinitrd and retest.
> 
> Boot works. :-)

Weird...  Could you try the following?

- Remove /lib/firmware/updates again, mkinitrd, and confirm that you get the
unbootable state again

- Boot with nomodeset, then run
  % unxz -f /lib/firmware/amdgpu/picasso*.xz
  mkinitrd, reboot and check whether it works now