DVD playback issue: FAILURE - non aligned DMA transfer attempted

[Novembre]

On Thu, Apr 2, 2009 at 7:24 PM, Sergio de Almeida Lenzi <
lenzi.sergio at gmail.com> wrote:

>  Em
>
>
>
> I've played another DVD which, I'm 100% sure, had copy protection in the
> same drive without any errors, but that was before upgrading my machine from
> 7.0-RELEASE to RELENG_7 on Feb 19, 2009. This DVD, however, does not play
> and gives that error. Also, I have already turned the hw.ata.atapi_dma to
> "0", but that didn't help either. I'm a bit skeptical about it being the
> copy protection of the disc.
>
> Any more ideas?
>
>  Hummm.....
> may be the dvd drive is with some firmware problem....
>
> After I changed (switched) to dvd drive using sata interface, I
> have never seen that problem again....
>
> I have seen this too, some dvd plays good, some not...
> but with SATA, all plays good....
>
>
> Sergio
>


This DVD drive is using the SATA interface. I'm using the ATAPICAM layer to
emulate it as a SCSI drive though. I don't know what's happening here.

Thanks for your suggestions though...