From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: frequent disk head unloads under Linux: additional hardware Date: Mon, 29 Sep 2008 16:27:46 +0900 Message-ID: <48E08372.2030508@kernel.org> References: <48C43F98.401@asmodeus.be> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:33362 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751063AbYI2H3e (ORCPT ); Mon, 29 Sep 2008 03:29:34 -0400 In-Reply-To: <48C43F98.401@asmodeus.be> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Pascal Vandeputte Cc: linux-ide@vger.kernel.org Hello, Pascal Vandeputte wrote: > Hi, > > I've been highly frustrated for more than a year about this problem with > my HP nx7400 laptop and its Seagate Momentus 5400.2 disk (which is > otherwise a really fine piece of equipment). By switching from Ubuntu to > openSUSE today, I had to look for the Suse way of fixing this up > (instead of editing /etc/hdparm.conf on Ubuntu), and I stumbled upon the > storage-fixup script which is really nice! > > As my harddisk isn't included in by default yet, I've attached the > required information to this e-mail. > > Adding this to /etc/storage-fixup.conf solves it: > > # Reported drive model: ST9100824AS > rule hp-nx7400 > dmi system-manufacturer Hewlett-Packard > dmi system-product-name HP Compaq nx7400* > ata model ST9*AS > act hdparm -B 255 $DEV How much does the Load_Cycle_Count increase under idle usage per hour without the adjustment? > An unfortunate side-effect of meddling with the power saving on my > system occurs at shutdown: for some reason I can clearly hear the drive > spin down and then suddenly spin up and initialize again before the > power is killed... This doesn't happen if I leave everything at default > settings. Restoring the default setting (128) manually before shutting > down doesn't prevent this either. It's weird and I've been working > around it by rebooting and using the power button when I see GRUB appear. That's a known problem of certain HP laptops. Please take a look at the following bug report. http://bugzilla.kernel.org/show_bug.cgi?id=8855 Thanks. -- tejun