http://bugzilla.kernel.org/show_bug.cgi?id=9355
[EMAIL PROTECTED] changed:
What |Removed |Added
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Status|RESOLVED |VERIFIED
------- Comment #28 from [EMAIL PROTECTED] 2007-11-20 08:26 -------
(In reply to comment #22)
> acpidump output shows that this box does not support _CST:
>
> FACP.dsl:
> [05Fh 095 1] _CST Support : 00
> [060h 096 2] C2 Latency : 03E7
> [062h 098 2] C3 Latency : 000A
>
> it shows that C2 latency is 999 (which is > 100, and thus not supported)
> it shows that C3 latency is 10 (which is < 1000, and thus legal).
>
> So we have the strange situation of no C2, but yes to C3,
> and C3 reports a mysteriously low 10usec latency.
>
> I wonder what C-states windows uses on this box...
>
Well, until kernel 2.6.23 linux used to hit C3 (and obviously never C2).
If you are interested, I have windows on this laptop, so if there is a way to
test the C-states, let me know.
Anyways: applying the patches to 2.6.24-rc2, compiling with CPU_IDLE=y,
NO_HZ=y, HIGH_RES_TIMERS=y and booting without parameters works, so it fixes my
problem, Thanks!
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