Re: Followup on 2.6.13-rc3 ACPI processor C-state regression

From: Jose Luis Domingo Lopez
Date: Fri Jul 29 2005 - 13:58:43 EST

On Friday, 29 July 2005, at 20:33:18 +0200,
Jose Luis Domingo Lopez wrote:

> I was just about to gather data to report the exact same problem in my
> box, a no-brand non-mobile PC (AMD Athlon XP 1700+). Kernel version
> 2.6.13-rc2 and before correctly detected both C1 and C2 processor states,
> so when the system is idle some energy and heat is preserved. Now, with
> 2.6.13-rc3-git8 only C1 gets detected, so no power save.
> I am going to try the patch Andrew suggest in this same thread right now,
> and will report back is this fixes the issue.
Just rebooted with a 2.6.13-rc3-git8 kernel patched with the patch Andrew
showed in his last email in this thread, and now processor C2 power state
is recognized and operational again, giving in my setup a 12ºC decrease in
processor temperature while idle.


Jose Luis Domingo Lopez
Linux Registered User #189436 Debian Linux Sid (Linux 2.6.13-rc3-git8)

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