Re: Freeze with 2.6.32.19 and xen-4.0.1rc5, acpi problems

["Pasi Kärkkäinen" <pasik@iki.fi>]

On Tue, Aug 24, 2010 at 09:50:19AM +0200, Claus Rosenberger wrote:
> >>> 2.6.31.9 but thats not a pvops kernel.
> >>>
> >>
> >> Does someone have ideas why the system would silently lockup (freeze)
> >> without those "acpi=ht noapic noirqbalance" options? 
> >>
> >> Afaik this is an Intel DQ45CB motherboard, which has been used by many people/developers.
> >>
> > 
> > Oh, one more thing.. 
> > 
> > Claus: Please try those options separately,
> > to figure out which one of those is the important one.
> > 
> > -- Pasi
> > 
> 
> 
> I checked out these options, following result
> 
> - acpi=ht noapic     => worked
> - noapic             => didn't work, disk errors while booting, no functional system
> - acpi=ht apic=debug => worked
> 
> So it seems i definitly need the option acpi=ht or acpi=off or something like that.
> 

Keir, Jeremy: Any idea why acpi=ht is needed to make Intel DQ45CB (Q45 chipset) work?

Without "acpi=ht" the system freezes randomly without any log/debug/serialconsole output..

-- Pasi