From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Renninger Subject: RE: Frequency can't switch on a dual Turion 64 Date: Sat, 13 Jan 2007 21:21:48 +0100 Message-ID: <1168719708.14230.78.camel@sublime.site> References: <43212.193.48.146.2.1168602995.squirrel@www.lievin.net> <1449F58C868D8D4E9C72945771150BDFD964C6@SAUSEXMB1.amd.com> Reply-To: trenn@suse.de Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1449F58C868D8D4E9C72945771150BDFD964C6@SAUSEXMB1.amd.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: cpufreq-bounces@lists.linux.org.uk Errors-To: cpufreq-bounces+glkc-cpufreq=m.gmane.org+glkc-cpufreq=m.gmane.org@lists.linux.org.uk Content-Type: text/plain; charset="us-ascii" To: "Langsdorf, Mark" Cc: davej@codemonkey.org.uk, Romain =?ISO-8859-1?Q?Li=E9vin?= , cpufreq@lists.linux.org.uk On Fri, 2007-01-12 at 09:06 -0600, Langsdorf, Mark wrote: > > I may have detected a bug with the K8 cpu frequency driver > > (powernow_k8.c). While the driver correctly > > detect the 2 availables frequencies (800 & 1600 MHz), the > > governor always uses the lowest one. > > It looks like the powernow-k8 driver correctly constructs > a two entry frequency table and verifies it, and then > reverifies a second frequency table with only 1 entry in > it. > > I'm not familiar enough with the cpufreq code to guess > why this is happening. I don't think it's a powernow-k8 > bug, but I suppose it could be doing something wrong. I also think this is ACPI triggered... does: echo 1600000 > /sys/devices/../scaling_max_freq helps, maybe shortly? Is this an HP laptop? Do you have some extended powernow/cpufreq configs in BIOS? Is it getting too hot? Check whether there exists a passive trip point in: /proc/acpi/thermal_zone/*/trip_points and whether /proc/acpi/thermal_zone/*/temperature exceeds it. Thomas