linux-kernel - Re: [PROBLEM][2.6.31.1] - Cannot burn DVDs

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Message-ID: <188185.1254800635@turing-police.cc.vt.edu>
Date:	Mon, 05 Oct 2009 23:43:55 -0400
From:	Valdis.Kletnieks@...edu
To:	Joerg.Schilling@...us.fraunhofer.de (Joerg Schilling)
Cc:	shawn.starr@...ers.com, linux-kernel@...r.kernel.org
Subject: Re: [PROBLEM][2.6.31.1] - Cannot burn DVDs - PIONEER DVD-RW DVR-111D

On Tue, 06 Oct 2009 00:15:48 +0200, Joerg Schilling said:
>                                                        The fork did see 
> some speudo activity in the time between september 2006 and May 6th 2007 but it
> is dead since then.

http://cdrkit.org/releases/ says differently:

[ ]	cdrkit-1.1.3.tar.gz	26-Mar-2007 20:38 	1.4M
[ ]	cdrkit-1.1.4.tgz	01-Apr-2007 20:12 	1.4M
[ ]	cdrkit-1.1.5.1.tar.gz	21-Apr-2007 09:54 	1.3M
[ ]	cdrkit-1.1.5.tar.gz	21-Apr-2007 09:24 	1.3M
[ ]	cdrkit-1.1.6.tar.gz	06-May-2007 15:44 	1.3M
[ ]	cdrkit-1.1.7.1.tar.gz	17-Mar-2008 21:47 	1.4M
[ ]	cdrkit-1.1.8.tar.gz	25-May-2008 23:02 	1.4M
[ ]	cdrkit-1.1.9.tar.gz	26-Oct-2008 23:17 	1.4M

Slow-moving maybe, but hardly "dead". 

> The fork is a problem caused by a hostile packetizer, see:

> http://cdrecord.berlios.de/private/linux-dist.html

Which says:

"Although there is no "project" activity on the "fork" anymore since more than
28 months (which is more than three times of the speudo activity period), there
are still people who spread incorrect claims on both the original project and
the fork. Please help the free original project by correcting these incorrect
claims."

Unfortunately, "there are still people who spread incorrect claims" seems to
include one Joerg Schilling. Please fix your incorrect "28 months" claim, and
all similar issues.  It will help your original project's credibility.

It also says:

"In all programs of the fork that send SCSI commands, you may be unable to
access any of the CD/DVD/Blu-Ray drives at all if you are on Linux-2.6.8.1 or
later. This is due to a missing workaround for the Linux kernel interface
change that happened with Linux-2.6.8.1."

If this is the SCSI command filtering that was cleared up in 2.6.12, you
probably owe it to users to point out that little detail.  2.6.12 is over 4
years ago.  Given that when the fork happened, 2.6.17 was already current, I
could see why they didn't forward-port the fix for an issue that was only a
problem then if your kernel was already more than 2 years old, and instead just
put in doc/plattforms/README.linux:

 - Linux kernel versions between 2.6.8 and 2.6.11 are known to have invasive
   SCSI command filtering which makes the use of wodim almost inpossible or
   complicated for non-root users. Avoid those kernel versions, unless they
   have been patched to disable that filtering.

So this claim, although possibly technically correct, is vastly misleading,
especially 4 years later.

> You can help: Ask your Linux distributor why he distributes an illegal and 
> buggy fork instead of the legal original software!

Apparently it's distributed because their legal team doesn't think it's an
illegal fork, and it's still buggy because after you relicensed to CDDL, they
felt they couldn't backport your fixes to the original GPL code.

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