Panic at boot time

[John Baldwin]

On Tuesday 03 February 2004 02:44 am, Ian Freislich wrote:
> John Baldwin wrote:
> > On Saturday 31 January 2004 09:29 am, Ian Freislich wrote:
> > > John Baldwin wrote:
> > > > On Thursday 29 January 2004 12:42 pm, Ian Freislich wrote:
> > > > > Hi
> > > > >
> > > > > I've been getting this panic at boot time for last few weeks.  The
> > > > > last kernel that works is of around Wed Jan  7 15:23:38 SAST 2004.
> > > > >
> > > > > Random datapoints:
> > > > >    Gigabyte 686DLX motherboard with 2 PentiumII CPUs
> > > > >    I've noticed that ACPI has been working more and more poorly
> > > > >       with this motherboard.
> > > > >    I think this is related to ACPI brokenness because the working
> > > > >    kernel panics in exactly the same way if I set
> > > > > hint.acpi.0.disabled="1".
> > > >
> > > > That means your working kernel doesn't work if ACPI is disabled
> > > > which is what you are seeing here.  Can you try kernels without
> > > > SMP and see if ACPI and !ACPI both work?
> > >
> > > Yes, UP kernels work with and without ACPI.  So ACPI is broken for
> > > SMP (on this particular board)?
> >
> > No, you get the panic when you don't use ACPI when using SMP.  See if
> > your system has an MADT table via 'acpidump -t'.  If it doesn't, see
> > if there is a BIOS update for your BIOS.
>
> My machine is running the latest BIOS, well, the very latest image
> from Gigabyte was a Beta version that required a univeral programmer
> to recover the motherboard.  I don't have access to a universal
> programmer any more, so I'm a bit reluctant to try this image again.
>
> Is there anything else that can be done to fix this (appart from
> downgrading to 4.9).

If you use ACPI, disable device apic via 'hint.apic.0.disabled=1'

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org