linux-kernel - RE: Unable to write dvd+r on 3 systems

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Date:	Sun, 22 Feb 2009 11:22:29 +0100
From:	Richard Jonsson <richard_jonsson@...mail.com>
To:	<lsorense@...lub.uwaterloo.ca>
CC:	lkml <linux-kernel@...r.kernel.org>
Subject: RE: Unable to write dvd+r on 3 systems

> Is anything stupid like gnome volume manager or hal or something regularly
> poking at the drive to detect discs?
>
They are present on system1, but not the other two. How can I determine if
they interfere?

> Are you using 80conductor IDE cables (for those drives that are IDE)?
> I have had some DVD writers fail in odd ways when using 40conductor
> cables.
>
Yes.

Running "dd if=/dev/dvd of=/dev/null" on a burned disc reports read
error at or around the block where the speed jumps from 2.4x> 4.0x or
from 4.0x> 6.0x. 
I had logs for this, but misplaced them =/. Also when jumping to
the next higher speed there is a dip where growisofs reports 0x burn
speed, is that normal?

> --
> Len Sorensen

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