Re: kern/57059 (amdgpu graphics ring test failing)

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

> Date: Mon, 10 Jul 2023 23:57:51 +0000
> From: Bruno Melo <bmelo%protonmail.com@localhost>
> 
> You mean rebooting from ddb? I did the steps rebooting from ddb and
> no new panic or error messages in dmesg. In fact, one of my AMD
> machines cannot even get any input from keyboard when the system get
> the cnopen crash, in this case I power off and on again.

Can you build a kernel with DDB_ONPANIC=0 or
DDB_COMMANDONENTER="reboot" and try booting that, so that the system
will reboot automatically once it gets to the cnopen panic?

> The other still can get input from keyboard and I type reboot in
> ddb, but no new message in dmesg at next boot with amdgpu disabled.

Just to check: did you disable amdgpu by booting a different kernel,
or by entering userconf and disabling the amdgpu driver?  If you
haven't tried the userconf approach, can you try that?