From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262221AbUDKElq (ORCPT ); Sun, 11 Apr 2004 00:41:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262226AbUDKElq (ORCPT ); Sun, 11 Apr 2004 00:41:46 -0400 Received: from 10.69-93-172.reverse.theplanet.com ([69.93.172.10]:17090 "EHLO gsf.ironcreek.net") by vger.kernel.org with ESMTP id S262221AbUDKEln convert rfc822-to-8bit (ORCPT ); Sun, 11 Apr 2004 00:41:43 -0400 From: Andre Eisenbach Organization: IronCreek.net To: linux-kernel@vger.kernel.org Subject: Athlon Mobile XP CPU speed problem Date: Fri, 9 Apr 2004 17:23:55 +0000 User-Agent: KMail/1.6.1 MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Message-Id: <200404091723.55628.andre@ironcreek.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Dear Linux-Kernel developers, My notebook [1], powered by a AMD Athlon XP2400+ (k7) is slowing down when running on battery. This happens regardless of whether or not cpu frequency scaling is enabled or not. /proc/cpuinfo still shows maximum frequency, but the computer is definitely slowed down considerably. ACPI cpu info shows "throttling contro: no" and "limit interface: no". It seems like the slowdown occurs out of control of linux cpu frequency scaling or ACPI. What may cause this slow-down? Is there any driver/kernel option which may let me control this behaviour? Current kernel version used 2.6.5-mm1 with cpufreq and ACPI compiled in. Thanks, André Eisenbach ------ [1] Compaq Presario 2100z /proc/cpuinfo: processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 10 model name : mobile AMD Athlon(tm) XP2400+ stepping : 0 cpu MHz : 1788.568 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow bogomips : 3538.94 /proc/acpi/processor/CPU0/info processor id: 0 acpi id: 0 bus mastering control: yes power management: yes throttling control: no limit interface: no