From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Hancock Subject: Re: How to disable power managment for SATA? Date: Mon, 31 May 2010 18:06:10 -0600 Message-ID: <4C044EF2.8000109@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-iw0-f174.google.com ([209.85.214.174]:46297 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751183Ab0FAAGM (ORCPT ); Mon, 31 May 2010 20:06:12 -0400 Received: by iwn6 with SMTP id 6so608470iwn.19 for ; Mon, 31 May 2010 17:06:11 -0700 (PDT) In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "Fred ." Cc: linux-acpi@vger.kernel.org On 05/31/2010 05:38 PM, Fred . wrote: > I can disable power management with acpi=off > > But how do I disable it just for SATA? acpi=off will disable many other things as well which you probably don't want, what are you trying to disable specifically? Link power management isn't normally on by default for SATA, unless your distro turned it on. Have a look at what's in the files found by: find /sys -name link_power_management_policy