From owner-freebsd-hackers  Sun Mar 26 14:12:22 1995
Return-Path: hackers-owner
Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id OAA02061 for hackers-outgoing; Sun, 26 Mar 1995 14:12:22 -0800
Received: from tfs.com (mailhub.tfs.com [140.145.250.1]) by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id OAA02053 for <hackers@FreeBSD.org>; Sun, 26 Mar 1995 14:12:20 -0800
Received: by tfs.com (smail3.1.28.1) 
Message-Id: <m0rt0X7-0003xlC@TFS.COM>
From: julian@tfs.com (Julian Elischer)
Subject: Re: Not seeing disc at start up
To: dufault@hda.com (Peter Dufault)
Date: Sun, 26 Mar 1995 14:11:40 -0800 (PST)
Cc: root@io.cts.com, hackers@FreeBSD.org
In-Reply-To: <199503261248.HAA08855@hda.com> from "Peter Dufault" at Mar 26, 95 07:48:56 am
X-Mailer: ELM [version 2.4 PL23]
Content-Type: text
Content-Length: 1126      
Sender: hackers-owner@FreeBSD.org
Precedence: bulk

> 
> Morgan Davis writes:
> > cd0(nca0:1:0): UNIT ATTENTION asc:28,0
> > cd0(nca0:1:0): Not ready to ready transition, medium may have changed
> 
> I committed Julian's CDROM changes for him so I bear some responsibility
> for this but I don't have a CD-ROM drive on the FreeBSD system at
> the moment.
> 
> Is this happening to everyone with a CDROM with the new code, or
> only with this media vision device?
> 
> "scsi_probedev" tosses out a "be silent!" TEST UNIT READY before
> doing the inquiry specifically in order to catch these power up
> issues.  Apparently this device isn't complaining through a TEST
> UNIT READY or INQUIRY and finally complains when we do a READ CD
> CAPACITY.
> 
> I just looked at the diffs that I applied for Julian and I don't
> see where the new behavior was introduced.

I think the drive takes a whule to come ready, and somehow, co-incidence
makes it come ready before this command? I see in another post that this behaviour is
already known to occor on a 1.1.5.1 system, so it's not new, just the message is new.
The other poster says increasing SCSI_DELAY fixes the problem.


julian