Date: Mon, 17 Jun 2002 21:39:20 -0700 (PDT) From: Doug Barton <DougB@FreeBSD.org> To: "Bruce A. Mah" <bmah@FreeBSD.org> Cc: John Prince <johnp@knight-trosoft.com>, <dwcjr@inethouston.net>, <johnp@lodgenet.com>, <stable@FreeBSD.org> Subject: Re: ATA Atapi 4.6 Release Message-ID: <20020617213853.Y4899-100000@master.gorean.org> In-Reply-To: <200206180432.g5I4WZ4O029136@intruder.bmah.org>
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This all looks good to me. John, can you confirm that the procedure below
works?
Thanks,
Doug
On Mon, 17 Jun 2002, Bruce A. Mah wrote:
> If memory serves me right, John Prince wrote:
> > Thanks..
> > and you are right..
>
> This worked? OK.
>
> I'll work on an errata entry for this. Here's my understanding, mostly
> based on dougb's message plus a little experimenting:
>
> This problem is that some users are having difficulty reading CD-ROMs on
> certain ATA CD-ROM drives. This has been seen on the AOpen 48x, 52x,
> and 56x CD-ROM drives (are there any non-AOpen drives that have this
> problem?). The error message one sees is:
>
> acd0: READ_BIG command timeout - resetting
> ata1: resetting devices .. done
>
> (In some cases, this is followed by a kernel panic.)
>
> We need first-time CD-ROM users (with affected hardware) to interrupt
> their boot process (at the "Hit [Enter] to boot immediately..." step),
> and then do:
>
> ok set hw.ata.ata_dma="1"
> ok set hw.ata.atapi_dma="1"
> ok boot
>
> (This gets a working system for a CD-ROM install.)
>
> Do the install like normal.
>
> After installation is complete, we need to apply the workaround for
> subsequent reboots. Reboot after finishing the installation and then
> add these lines to /boot/loader.conf or /boot/loader.conf.local (create
> as necessary):
>
> hw.ata.ata_dma="1"
> hw.ata.atapi_dma="1"
>
> Then reboot one more time.
>
> Is that roughly right? I'm mostly interested in getting an errata entry
> containing the correct workaround out quickly, rather than getting the
> list of CDROM drives exactly right. We can fine-tune said list later.
>
> Bruce.
>
>
>
--
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And in this great conflict, ... we will see freedom's victory."
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State of the Union, January 28, 2002
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