From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: Re: A bug or not? No C states on Turion64 ML-34 Date: Tue, 19 Sep 2006 23:16:25 -0400 Message-ID: <200609192316.26355.len.brown@intel.com> References: <200609171646.46064.tvrtko@ursulin.net> Reply-To: Len Brown Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:8366 "EHLO hera.kernel.org") by vger.kernel.org with ESMTP id S1750895AbWITDOc (ORCPT ); Tue, 19 Sep 2006 23:14:32 -0400 In-Reply-To: <200609171646.46064.tvrtko@ursulin.net> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "Tvrtko A. Ursulin" Cc: linux-acpi@vger.kernel.org On Sunday 17 September 2006 11:46, Tvrtko A. Ursulin wrote: > On my new HP Pavilion s7510 PC I seem to be missing C states ... > tvrtko@astrid:~> cat /proc/acpi/processor/CPU0/power > active state: C1 > max_cstate: C8 > bus master activity: 00000000 > states: > *C1: type[C1] promotion[--] demotion[--] latency[000] > usage[00000000] Don't be bothered by the 0 usage, C1 always works. Dunno if this processor and BIOS support more C-states or not. Maybe somebody else who has one has checked it out? I have seen an ML-28 which support C1 and C3 -- though maybe an ML-28 is different from an ML-34... It is possible that an additional C-state will appear when you switch to battery mode. If you post the output from acpidump it will be easy to tell. cheers, -Len