timer broken (was Re: fc5 hangs)

[David L]

>>David L wrote:
>>
>>>>The timer interrupt is incrementing very slowly.  Instead of 1000
>>>>Hz it's incrementing about once or twice per minute.  What would
>>>>cause that?  I had ntpd running, but I killed it.
>>
>>There's your answer - kernel bug specific to your hardware.
>>
>>Try downgrading your kernel to an earlier release, and see if the timer
>>(and other issues) disappear.
>
>OK, I downgraded to 2.6.12 and let it run overnight.
[snip]

When I got to work, I found that X-windows had failed to start after
downgrading to the 2.6.12 kernel.  So I tried 2.6.14 and noticed that
udev failed to start.  So I had to bring the kernel back to 2.6.16.  I
compiled 2.6.16.20 without ACPI and APM support and I'm trying
that now.  I guess I'll have to learn how to downgrade udev before
trying an older kernel.

Is the timer behavior I'm seeing definitely a kernel bug?  Or should
I continue my effort of trying older kernels before filing a bugzilla
report on the fc5 kernel?

Thanks...

               David

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