From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nick Bowler Date: Thu, 13 May 2010 15:30:43 +0000 Subject: udev cdrom_id rules prevent unmounted CD from spinning down Message-Id: <20100513153043.GA3966@elliptictech.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-hotplug@vger.kernel.org Please CC me as I am not subscribed to the list. The cdrom_id udev rules seem to be preventing the cdrom drive on my laptop from spinning down. Upon inserting a disk, it will spin up to full speed, then the motor will turn off. Before the disk stops completely, however, it will spin right up again, then begin to stop, then spin up, then begin to stop, ad infinitum. This only occurs whilst no filesystem is mounted off the device, and deleting /lib/udev/rules.d/60-cdrom_id.rules solves the problem, at least until the next time udev gets updated. My laptop is a ThinkPad T500, which has a SATA cdrom drive attached to an Intel ICH9M/M-E SATA AHCI controller. -- Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)