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SubjectRe: 2.6.23-rc4-mm1 and -rc6-mm1: boot failure on HP nx6325, related to clockevents
Date
On Monday, 24 September 2007 15:05, Thomas Gleixner wrote:
> On Mon, 2007-09-24 at 14:57 +0200, Rafael J. Wysocki wrote:
> > > > http://tglx.de/projects/hrtimers/2.6.23-rc4/patch-2.6.23-rc4-hrt1.patches.tar.bz2
> > > >
> > > > applied. I also have the 2.6.23-rc6-mm1 dmesg output ready, but there's some
> > > > -mm-specific noise in it. Please let me know if you want it, though.
> > >
> > > Hmm:
> > >
> > > > Command line: root=/dev/sda3 vga=792 resume=/dev/sda1 noacpitimer apic=verbose 2
> > > --------------------------------------------------------^^^^^^^^^^^
> > >
> > > noacpitimer is not a valid commandline option.
> > >
> > > I asked for:
> > > >> > > noapictimer
> >
> > I'm blind, sorry.
> >
> > > So I really wonder, why noacpitimer on the kernel command line makes any
> > > difference. I'm confused.
> >
> > \metoo
> >
> > Well, it was probably read as "noacpi". :-)
>
> Hmm, ACPI is in the log all over the place.

Well, "noacpi" seems to be a synonym for "pci=noacpi".

Anyway, it causes acpi_disable_pci() to be executed, which according to
Documentation/kernel-parameters.txt means "Do not use ACPI for IRQ routing or
for PCI scanning" (it works like this on x86_64 too, although the doc says it's
x86_32-specific).

And yes, it matches "noacpiwhatever" in the command line with "noacpi". Sigh.

> > Fortunately, noapictimer helps as well, dmesg attached (I have the one
> > from 2.6.23-rc6-mm1 ready, too).
>
> Ok, at which point is the box stopping, when you omit noa* ? Is
> earlyprintk giving you any useful info ?

earlyprintk=vga doesn't display anything (ie. black screen) and there are no
serial ports in the box.

Greetings,
Rafael
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