Re: DVD choppy

[Philip Walden]

Philip Walden wrote:
> Dotan Cohen wrote:
> > On a recent Dell laptop, what would cause DVD playback to be very 
> > choppy?
>
> Besides the ATA DMA stuff, you may also want to check whether your 
> MTRR is being set properly by the xorg X server.
>
> Mine looks like this:
>
> cat /proc/mtrr
> reg00: base=0x00100000 (   1MB), size= 256MB: write-back, count=1
> reg01: base=0xfc000000 (4032MB), size=  32MB: write-combining, count=1
>
> You should have at least one "write-combining" entry which means the 
> graphics card is set properly. Otherwise, performance can drop 
> dramatically.

Here is a howto:

http://www.faqs.org/docs/Linux-HOWTO/DVD-HOWTO.html#ss6.1