Re: PROBLEM: Dell Inspiron 1501 fails to boot in 2.6.21+

From: Daniel Walker
Date: Sat Jul 21 2007 - 12:46:37 EST


On Sat, 2007-07-21 at 13:59 +0200, Ingo Molnar wrote:
> * Mark Tiefenbruck <mark@xxxxxxxxxxx> wrote:
>
> > IO window: disabled.
> > MEM window: c0200000-c02fffff
> > PREFETCH window: disabled.
> > PCI: Bridge: 0000:00:14.4
> > IO window: disabled.
> > MEM window: c0300000-c03fffff
> > PREFETCH window: disabled.
> > PCI: Setting latency timer of device 0000:00:05.0 to 64
> > PCI: Setting latency timer of device 0000:00:06.0 to 64
> > NET: Registered protocol family 2
> >
> > The next few lines are usually as follows, but recent kernels never
> > get to them:
>
> thanks for the detailed report and bisection test! The above hang
> strongly implicates some sort of high-res timers, dynticks or
> clocksource problem. Most likely timer interrupts do not come as
> expected, and the above place is one of the first spots where the kernel
> waits for a (short) timeout - so you see it hang indefinitely.
>
> Besides the options Thomas suggested, you could also try
> clocksource=pm_timer?

Do you mean "clocksource=acpi_pm" ?

Daniel

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