[GRLUG] hpet

[Bob Kline]

On Mon, May 30, 2011 at 7:07 AM, Adam Tauno Williams <awilliam at whitemice.org
> wrote:

> On Mon, 2011-05-30 at 06:22 -0400, Bob Kline wrote:
> > Often during a boot up, or reboot, I'll
> > see the output hang at a statement saying:
> > CE: hpet increased min_delta_ns to 20112 nsec
> > Things will then just sit there for 10 to 12
> > minutes, and then go on their way.
>
> Be wary of blaming CE: hpet, or any other dmesg you *see* for a long
> pause or hang.  It could very well be the *next* message that appears
> which could be the cause of an issue.
>
> > I looked in /etc/ for hpet, and only found
> > one reference, in /etc/bash_completion.d/qemu
> > It's one of endless options to a function
> > called compgen, and is "-no-hpet".
> > No idea what any of this is saying. Can
> > anyone provide any hints?
> > I'm running Kubuntu 11.04.  I have read
> > some discussions that say this is something
> > of a known issue.
>
> If you actually have a timing issue with hpet you most likely have
> faulty/buggy hardware.  Instruct the system to not use the hpet [High
> Performange Event Timer] timing source by using the boot parameter
> "hpet=disable";  the kernel will then use the "pit" [Programmable
> Interval Timer] timing source.  You may also be able to enable/disable
> HPET in your BIOS.
>
> Where would "hpet=disable" be placed?

I leave my machine on, so the annoyance
of just waiting is probably the best option,
for now anyway, in case something useful
is happening before or after the hpet output.

Thanks.

    -- Bob


>



>
>

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