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DragonFly users List (threaded) for 2010-02
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Re: DVD that other computers can't play

From: Rumko <rumcic@xxxxxxxxx>
Date: Mon, 08 Feb 2010 21:53:10 +0100

Steve O'Hara-Smith wrote:
> On Sun, 7 Feb 2010 11:37:33 -0500
> Pierre Abbat <phma@phma.optus.nu> wrote:
>> I installed vlc and tried to play the disk. It came up with a menu
>> saying "English/Español"; I picked one and tried to play one of the
>> movies. It is now spewing an endless stream of the following error on the
>> console: acd0: setting up DMA failed
>> ata1: FAILURE - oversized DMA transfer attempt 100352 > 65536
>> At least that's farther than I got on Windows, and I understand the
>> error. How do I fix it?
> Nasty - I thought that problem was fixed some time ago, I haven't
> seen it recently. A workaround is to use natacontrol to turn off DMA on the
> drive like this:
> natacontrol mode acd0 pio4

This setting up DMA failed problem has appeared recently. After upgrading from
a 31st Jan kernel, I experienced an extremely similar message (just that in my
case the first number was 69632).

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