Re: HPET (?) related hangs and breakage in 2.6.35,36

[Borislav Petkov]

On Tue, Nov 09, 2010 at 12:44:48PM -0500, Andrew Lutomirski wrote:
> I may have just reproduced after a couple of days of uptime it in
> 2.6.36 with hpet=disable (in any case, the system hung and netconsole
> didn't work).
> 
> I'm currently testing the hpet_min_tick stuff, backported to 2.6.36,
> with hpet on.  Haven't had a problem yet, but I'll see what happens
> after a few hours.  So far, it said:
> 
> ACPI: HPET id: 0x8086a301 base: 0xfed00000 min tick: 128

This doesn't say what your BIOS has set it to originally. For that, do

hexdump -C /sys/firmware/acpi/tables/HPET

and check what does the u16 little endian value at offset 0x35 say.

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Regards/Gruss,
Boris.

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