From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: System fails to connect to iHOS-104 DVD drive with nvidia MCP61 chipset. Date: Sun, 8 Sep 2013 08:25:49 -0400 Message-ID: <20130908122549.GA30549@htj.dyndns.org> References: <520D92C6.30009@1045.ca> <520FB3BA.7050302@1045.ca> <5217FFB2.4050007@1045.ca> <52180F76.3070803@1045.ca> <5218D74A.5020305@1045.ca> <522A62A1.6050904@1045.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-qc0-f181.google.com ([209.85.216.181]:41181 "EHLO mail-qc0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751192Ab3IHMZx (ORCPT ); Sun, 8 Sep 2013 08:25:53 -0400 Received: by mail-qc0-f181.google.com with SMTP id q4so2657741qcx.26 for ; Sun, 08 Sep 2013 05:25:52 -0700 (PDT) Content-Disposition: inline In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Robert Hancock Cc: Bruce Link , "linux-ide@vger.kernel.org" , 1063474@bugs.launchpad.net Hello, On Fri, Sep 06, 2013 at 07:53:49PM -0600, Robert Hancock wrote: > > Is there any more information I can supply that would be helpful? > > I'm not quite sure what the next step would be. It's quite possible > that the NVIDIA driver in Windows is doing some magic to work around > the problem that we don't know about, but it's hard to say what that > might be. The fact that the default drivers used in the WinPE boot > don't seem to work would tend to point toward some kind of hardware > incompatibility issue. > > Tejun, think you poked with some of this stuff before - any ideas? It has been years since I looked at MCP quirks, of which there are too many. It's likely another quirk on the controller side that nvidia worked around somehow without telling anyone. Given the history and that nvidia is out of chipset market, I think it's highly unlikely to learn what the issue and workaround are without reverse engineering it. So, um, no idea. Thanks. -- tejun