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
