Re: 2.6.25 pci=noacpi

Andrew Morton
2008-05-02T12:48:35Z

On Fri, 02 May 2008 12:23:01 +0100 Richard <tuxbox.guru@gmail.com> wrote:

> Len Brown wrote:
> > On Thursday 01 May 2008, Richard wrote:
> >
> >> Len Brown wrote:
> >>
> >>> On Tuesday 29 April 2008, Richard wrote:
> >>>
> >>>
> >>>> Hi there,
> >>>>
> >>>> Now I am at a loss.. I cant get any logs from netconsole. With ACPI
> >>>> enabled it drops dead just after the kernel hands control to Init. When
> >>>> I reboot with acpi disabled there is no trace of the previous boot in
> >>>> /var/log/message or kernel logs.
> >>>>
> >>>> The network card I have is a Tigon3 and its not initialised before the
> >>>> system dies... or so it looks (altho I cant seem to get any netconsole
> >>>> working - I suspect pebkac)
> >>>>
> >>>> I have tried to find an option where the kernel boot is logged
> >>>> explicitly to disk, but I cant seem to find the option. There is so much
> >>>> chaff I cant seem to get my brain to find the REAL options list thats up
> >>>> to date.
> >>>>
> >>>> Any pointers are appreciated
> >>>>
> >>>>
> >>> go fishing with this bait:
> >>>
> >>> idle=poll
> >>> acpi=noirq
> >>>
> >>> -Len
> >>>
> >>>
> >>>
> >> Thanks :-) With help from Thomas (and his team) , noapictimer seems to
> >> have fixed the symptom.. now its to hunt for the cure :-)
> >>
> >
> > if the problem is the apic timer stopping during C-states,
> > then you should find that idle=poll will also work around the problem.
> > If idle=poll does not work around it but noapictimer does, then
> > the problem is the apic timer when the system is non-idle.
> >
> > -Len
> >
> >
> Hi Len,
>
> thanks - the idle=poll works to fix the problem.

Well, that's hardly a "fix". The power consumption will be very high.