Boot hang on ryzen based notebook

[Darius Mihai]

On Sat, Mar 30, 2019 at 7:41 PM Rozhuk Ivan <rozhuk.im at gmail.com> wrote:
>
> On Sat, 30 Mar 2019 16:37:06 +0200
> Darius Mihai <dariusmihaim at gmail.com> wrote:
>
>
> > I haven't actually tried with FreeBSD, but Linux also seems to have a
> > similar problem that can be fixed by disabling ACPI.
> > See 11.13.2.3 in
> > https://www.freebsd.org/doc/handbook/acpi-overview.html and tell us
> > how it works.
> >
>
> Panic with hint.apic.0.disabled="1":
> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=203260&action=edit
>
> I try also hw.mca.enabled=0, but it panic on cpu_initclocks_bsp(). - "No usable event timer found!"

You wrote "apic.0.disabled", not "acpi.0.disabled". Are you sure you
wrote the correct command? You do not want to disable the APIC
(interrupt controller), but the ACPI (control and power interface).

On a side note, you wrote "current at freebsd.org", so I've added
"freebsd-current at freebsd.org" (I hope that's what you originally
meant).

Darius