From mboxrd@z Thu Jan 1 00:00:00 1970 From: Harry van Haaren Subject: Re: CpuFreq Laptop Scaling broken? Date: Mon, 25 Aug 2014 18:36:30 +0100 Message-ID: References: <53FB6FE6.30408@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: Viresh Kumar , linux-rt-users@vger.kernel.org, Thomas Gleixner , Steven Rostedt , "Rafael J. Wysocki" To: Fernando Lopez-Lezcano Return-path: Received: from mail-la0-f43.google.com ([209.85.215.43]:55505 "EHLO mail-la0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754001AbaHYRgc (ORCPT ); Mon, 25 Aug 2014 13:36:32 -0400 Received: by mail-la0-f43.google.com with SMTP id gi9so10971821lab.2 for ; Mon, 25 Aug 2014 10:36:30 -0700 (PDT) In-Reply-To: <53FB6FE6.30408@localhost> Sender: linux-rt-users-owner@vger.kernel.org List-ID: On Mon, Aug 25, 2014 at 6:18 PM, Fernando Lopez-Lezcano wrote: > Hi Harry, Hey! > Check to see if you see something in /sys/devices/system/cpu/intel_pstate/ My core2duo doesn't have intel_pstate, its too old! > https://wiki.archlinux.org/index.php/CPU_frequency_scaling These options (cpupower frequency-set -g performance) don't work, see output as root user: [root@audio ~]# cpupower frequency-set -g performance Setting cpu: 0 Error setting new values. Common errors: - Do you have proper administration rights? (super-user?) - Is the governor you requested available and modprobed? - Trying to set an invalid policy? - Trying to set a specific frequency, but userspace governor is not available, for example because of hardware which cannot be set to a specific frequency or because the userspace governor isn't loaded? Cheers, -Harry