Re: 14-ALPHA2 panic on cold boot

For those who interested or affected by this issue.

Looks like this regression was introduced by https://reviews.freebsd.org/D34117
Currently active PR is https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268393
It contains a patch proposed by one of users.
But the PR can't move forward without committers attention.

------- Original Message -------
On Tuesday, August 29th, 2023 at 11:09 AM, cglogic <cglogic@protonmail.com> wrote:

> Hello dear FreeBSD community,
>
> Recently I tried to boot from FreeBSD 14-ALPHA2 image and got panic on first boot after power on.
> My hardware is AMD Ryzen 9 5900X on ASUS ROG STRIX B550-E GAMING.
> It's related to audio chip ALC1220 initialization.
>
> If I remember correctly, when I tried FreeBSD 13-STABLE, around 2 years ago, no panic was observed.
> But at that time my GPU was unsupported by drm-kmod. So I installed Linux and used it for 2 years.
> On Linux, no such a panic observed. Now drm-kmod supports my GPU and I want move to FreeBSD.
>
> Also tried 13.2, got the same panic.
> Can't try earlier FreeBSD 13 releases, as they are not available for download anymore.
>
> I found two related bug reports:
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264305
>
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268393
>
> My backtrace is the same as in reported issues. So I did not write it from a screen to a paper.
>
> As I understand, this bug affects all AMD Zen2, Zen3 and Zen4 computers and laptops.
>
> We are near FreeBSD 14.0 release now, maybe it will be possible to fix it before release.
>
> Thanks.