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Date: Thu, 17 Jul 2008 10:57:29 -0700 (PDT)
From: Barney Cordoba <barney_cordoba@yahoo.com>
To: current@freebsd.org
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Cc: sos@freebsd.org
Subject: Re: DVD-ROM problem with Freebsd 7
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--- On Wed, 7/16/08, Barney Cordoba <barney_cordoba@yahoo.com> wrote:

> From: Barney Cordoba <barney_cordoba@yahoo.com>
> Subject: DVD-ROM problem with Freebsd 7
> To: current@freebsd.org
> Cc: sos@freebsd.org
> Date: Wednesday, July 16, 2008, 10:26 AM
> I'm debugging a problem with an Intel Bigby chipset and
> a DVD-ROM drive. We've swapped it out with a regular
> CD-ROM and have the same problem, so its likely not the
> drive. It gets probed as ATA_I82801IB_AH6.
> 
> The problem is that certain types of media don't work.
> Some work, some don't.   We're going to build a
> LINUX system to try to see if its the driver or some
> physical thing, but the media works on our other systems so
> it appears to be the driver.
> 
> In pouring over the drivers, I've noticed that the
> setmode function never seems to get called, and I'm
> wondering what the point of the setup variables are if
> they're never called. What should be the sequence of
> calls to properly set up the controller?
> 
> Barney

As an update to this, we fired up the latest linux kernel and the drive works flawlessly with all media. So there is a problem with FreeBSD and not the hardware.

Barney