From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Hancock Subject: Re: T500 cdrom drive never stops spinning until mount. Date: Wed, 12 May 2010 19:02:27 -0600 Message-ID: <4BEB4FA3.70308@gmail.com> References: <20100512023549.GA22623@cpu18.student.cs> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-yx0-f191.google.com ([209.85.210.191]:37644 "EHLO mail-yx0-f191.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752892Ab0EMBCb (ORCPT ); Wed, 12 May 2010 21:02:31 -0400 In-Reply-To: <20100512023549.GA22623@cpu18.student.cs> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Nick Bowler Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org On 05/11/2010 08:35 PM, Nick Bowler wrote: > The ThinkPad T500 has a SATA cdrom drive attached to an Intel ICH9M/M-E > SATA ACHI controller. Upon inserting a disk into this drive, if sr-mod > is loaded, the disk will never stop spinning by itself: it will spin up > to full speed, then start slowing down, but just before it stops, it > will spin up to full speed, then start slowing down, ad infinitum. > > If sr-mod is not loaded, the disk stops spinning right after insertion. > It is only possible to remove sr-mod when the disk is spinning at full > speed (all other times the module is in use), and then the disk stops. > > Mounting the disk also causes it to stop spinning (and it remains > stopped after unmounting it). > > I see this behaviour with both 2.6.32 and 2.6.34-rc7. Is something like hal, devicekit, etc. accessing the drive in this case? Can you try a minimal boot with no unnecessary processes and see if the same thing happens?