Date: Tue, 7 Jan 1997 15:30:05 -0800 (PST) From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-bugs Subject: Re: kern/2390: Some CDROM drives stop audio on cdcontrol status Message-ID: <199701072330.PAA22430@freefall.freebsd.org>
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The following reply was made to PR kern/2390; it has been noted by GNATS. From: j@uriah.heep.sax.de (J Wunsch) To: nsayer@quack.kfu.com Cc: FreeBSD-gnats-submit@freebsd.org Subject: Re: kern/2390: Some CDROM drives stop audio on cdcontrol status Date: Wed, 8 Jan 1997 00:04:42 +0100 As nsayer@quack.kfu.com wrote: > when running cdcontrol, 'status' will show status and stop > the drive. It is not entirely clear whether or not this is just > totally bogus behavior on the drive's part It's plain broken. Return that drive. READ SUBCHANNEL is _intended_ to report about the current audio play operation (the subchannel data are spurious bits interspersed with the regular data in order to provide an additional, low-bandwidth information flow). So if the drive stops when requesting subchannel data, what to do now? > Perhaps another quirk needs to be added to handle this > situation. I don't see any solution to this (other than avoiding the READ SUBCHANNEL totally). Since the drive apparently not only stops, but aborts the current play operation, all bets are off. Since that's already your second failure report for that drive, i'd strongly suggest you return it. It violates the specs. Seems that SCSI drive vendors are now trying to beat the ATAPI drive vendors in terms of bugginess and violation of standards in their firmware. :-(( -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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