kern/60699: DVD Multidrive udma mode autosensed wrong

[Jason Bacon]

The following reply was made to PR kern/60699; it has been noted by GNATS.

From: Jason Bacon <bacon at smithers.neuro.mcw.edu>
To: Tilman Linneweh <arved at FreeBSD.org>
Cc: freebsd-bugs at FreeBSD.org
Subject: Re: kern/60699: DVD Multidrive udma mode autosensed wrong
Date: Mon, 6 Sep 2004 13:31:14 -0500 (CDT)

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 Content-Type: TEXT/PLAIN; charset=US-ASCII
 
 
 Yes, the problem still exists on 5.2.1, but as before only with the 9572
 model as far as I know.  We have some earlier model drives that detect
 correctly.
 
 I've noticed some improvements from 5.1 to 5.2.1, namely an intermittent
 problem reading from DVDRAMs has been fixed, and it is no longer necessary
 to enable ATAPICAM and use cd0 instead of acd0.
 
 I attached the boot messages from one of the systems with this drive.
 You can see that it is detected as UDMA66, which does not work.  All
 attempted operations result in I/O errors.  UDMA33 seems to work for this
 drive, but I've found that WDMA works better with certain CDROM drives on
 the same channel.
 
 Let me know if there is anything I can do to help.
 
 Thanks,
 
 	Jason
 
 -----------------------------------------------------------------------
 "Why be a man when you can be a success?"
                 -- Bertold Brecht
 -----------------------------------------------------------------------
 
 On Mon, 6 Sep 2004, Tilman Linneweh wrote:
 
 > Synopsis: DVD Multidrive udma mode autosensed wrong
 >
 > State-Changed-From-To: open->feedback
 > State-Changed-By: arved
 > State-Changed-When: Mon Sep 6 14:19:17 GMT 2004
 > State-Changed-Why:
 > Is this still a problem with recent versions of 5.x ?
 >
 > http://www.freebsd.org/cgi/query-pr.cgi?pr=60699
 >
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