On Sun, 18 Sep 2022 16:10:27 +0200
andreas.fourn...@runbox.com wrote:

> So, I just updated to kernel 5.19.9-200.fc36.x86_64 that was released
> today. Unfortunately that didn't change anything. Still no sound :(
> 
> Makes me think that is wasn't a kernel issue at all, as the software
> update that originally broke the sound didn't contain a new kernel.
> But it did contain some firmware updates.
> 
> Is it possible to downgrade firmware packages? Or are they oneway?

Yes, you can go here,
https://koji.fedoraproject.org/koji/search?match=glob&type=package&terms=*firmware*
and find the firmware package you want to downgrade, here is an example,
https://koji.fedoraproject.org/koji/packageinfo?packageID=29969
and then select the package you want to downgrade to.  Once you have
downloaded it to your system, in the directory where it is saved, run
dnf -C downgrade [firmware package name]
This will downgrade the package.  However, I am not familiar with the
program that installs the firmware, and I don't know if it will allow
an earlier firmware to install over a later firmware.  It should, but
I'm not sure.  I think it will take a reboot for the downgraded
firmware to be used by the kernel.

If it works to restore your sound, you should do two things.
    
1.  Edit /etc/dnf/dnf.conf, or the equivalent on gnome package manager,
and put a line with
excludepkgs=[name of your firmware package]
so it isn't updated again.

2.  Open a bugzilla at https://bugzilla.redhat.com/ against the
firmware package about the problem so knowledge that the problem
exists gets to someone who can fix it.
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