[MPlayer-users] skipping while watching DVD

[jonathan]

Dominik 'Rathann' Mierzejewski wrote:
> On Sunday, 31 December 2006 at 01:28, jonathan wrote:
>> If I watch a DVD the DVD skips all few seconds. The sound skips which is 
>> mostly noticeable but also the video-stream skips.
> [...]
>> If I use "mplayer -vo null dvd://" the sound skips too and if I open the 
>> DVD without sound the video-stream stucks too.
>>
>> If I use "mplayer dvd:// -ao oss:/dev/dsp1" oss is emulated by alsa. The 
>> sound is okay, but the video skips too. And I get an message:
>> ************************************************
>> **** Your system is too SLOW to play this!  ****
>> ************************************************
>>
>> Playing an *.iso file works great. I have the same problems with VLC.
>>
>> I hope someone of you can help me.
> 
> Your symptoms suggest that your DVD drive has DMA disabled.
> Use hdparm to check:
> $ hdparm /dev/hda (substitute your dvd device for hda)
> /dev/hda:
>  IO_support   =  0 (default 16-bit)
>  unmaskirq    =  0 (off)
>  using_dma    =  1 (on)
>  keepsettings =  0 (off)
>  readonly     =  0 (off)
>  readahead    = 256 (on)
> 
> Make sure using_dma = 1. If not, use hdparm -d1 /dev/hda to enable it.
> 
> Regards,
> R.
> 

Thanks a lot. After activating the correct modules for dma in the kernel 
  my video's work perfectly.

Jonathan