From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264369AbTLYVkj (ORCPT ); Thu, 25 Dec 2003 16:40:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264371AbTLYVkj (ORCPT ); Thu, 25 Dec 2003 16:40:39 -0500 Received: from kluizenaar.xs4all.nl ([213.84.184.247]:55435 "EHLO samwel.tk") by vger.kernel.org with ESMTP id S264369AbTLYVki (ORCPT ); Thu, 25 Dec 2003 16:40:38 -0500 Message-ID: <3FEB5927.3040003@samwel.tk> Date: Thu, 25 Dec 2003 22:39:51 +0100 From: Bart Samwel User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20031105 Thunderbird/0.3 X-Accept-Language: en-us, en MIME-Version: 1.0 To: John Bradford CC: linux-kernel@vger.kernel.org Subject: Re: [PATCH] laptop-mode for 2.6, version 4 + smart_spindown References: <3FE92517.1000306@samwel.tk> <20031224111640.GL1601@suse.de> <3FE9AFFC.2080302@samwel.tk> <20031225100648.GB13382@conectiva.com.br> <3FEAFE66.2020602@samwel.tk> <200312251704.hBPH4QnO000128@81-2-122-30.bradfords.org.uk> In-Reply-To: <200312251704.hBPH4QnO000128@81-2-122-30.bradfords.org.uk> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org John Bradford wrote: > No, but I've definitely seen other drives, (old Toshiba ~100 MB ones), > which respect 'spin down immediately' commands, and don't support the > spin down inactivity timer. I can't remember whether they report > Power Management feature set supported or not, though. Hmmm, I think I've found the problem, hidden in the drive info. hdparm -I also says: Capabilities: [...] Standby timer values: spec'd by Standard, with device specific minimum I think it's the device specific minimum that got me, -S 4 equals 20 seconds, which is probably a lower value than the drive is capable of supporting. A bit nasty that the drive accepts the -S 4 setting, but just doesn't do anything with it. An error would have been nice. Anyway, the smart_spindown script does work for lower values, so I guess I'll use that instead. It has some added benefits as well, so I'm not too disappointed. Bart