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Date:      Sun, 1 Mar 2009 17:53:56 -0900
From:      Beech Rintoul <beech@freebsd.org>
To:        Gavin Atkinson <gavin@freebsd.org>, freebsd-current@freebsd.org
Cc:        Beech Rintoul <beech@freebsd.org>
Subject:   Re: SATA DVD no longer detected
Message-ID:  <200903011753.56616.beech@freebsd.org>
In-Reply-To: <1235731789.64816.7.camel@buffy.york.ac.uk>
References:  <200902261732.20420.beech@freebsd.org> <1235731789.64816.7.camel@buffy.york.ac.uk>

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On Friday 27 February 2009 01:49:49 Gavin Atkinson wrote:
> On Thu, 2009-02-26 at 17:32 -0900, Beech Rintoul wrote:
> > My SATA dvd is no longer detected. This worked fine up until recently.
> >
> > dmesg:
> > atapci0: <ATI IXP600 SATA300 controller> port
> > 0xb000-0xb007,0xa000-0xa003,0x9000-0x9007,0x8000-0x8003,0x7000-0x700f mem
> > 0xf9fff800-0xf9fffbff irq 22 at device 18.0 on pci0
> > atapci0: [ITHREAD]
> > atapci0: AHCI Version 01.10 controller with 4 ports PM supported
> > ata2: <ATA channel 0> on atapci0
> > ata2: [ITHREAD]
> > ata3: <ATA channel 1> on atapci0
> > ata3: [ITHREAD]
> > ata4: <ATA channel 2> on atapci0
> > ata4: [ITHREAD]
> > ata5: <ATA channel 3> on atapci0
> > ata5: [ITHREAD]
> > <SNIP>
> > ad4: 476940MB <WDC WD5000AAKS-75A7B0 01.03B01> at ata2-master SATA300
> >
> > uname:
> > FreeBSD stargate.akherb.com 8.0-CURRENT FreeBSD 8.0-CURRENT #21: Mon Feb
> > 16 12:03:51 AKST 2009
> >
> > My SATA drive is detected, but not the DVD. I'm unfamiliar with this area
> > so any pointers would be appreciated.
>
> Can you get and compare a verbose dmesg of a working and the non-working
> kernel?
>
> There have been a handful of improvements made to the ATA code recently,
> and presumably one of them has broken your system.  Maybe you could
> narrow down which commit lost your DVD drive by compiling HEAD from
> (say) 20th Feb, and stepping forward or backwards until the commit is
> pinpointed?  You should be able to achieve this within 4 recompiles if
> you pick your dates/times carefully.

Seems it's the first one. A kernel from Feb 10 detects it. Anything after 
2009-02-19 12:47:24 doesn't.

Beech
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