DVD playback slow & choppy

Mikkel L. Ellertson mikkel at infinity-ltd.com
Mon Nov 20 00:27:58 UTC 2006

Kevin Kempter wrote:
> On Sunday 19 November 2006 4:35 pm, Peter Gordon wrote:
>> On Sun, 2006-11-19 at 16:20 -0700, Kevin Kempter wrote:
>>> Hi List;
>>> I just inatalled FC6 on a Pentium 2.2Gz thinkpad with 2G of memory. I
>>> installed mplayer, the mplayer codecs, xine, kaffeine, etc.  Both Xine
>>> and Kaffeine play DVD's but the playback is slow & choppy.
>>> Thanks in advance for any help/advice...
>> Also, is DMA enabled for your DVD drive? If not, this also causes a lot
>> of CPU usage too. Check that it is set (and set it if not) by running
>> `/sbin/hdparm -d 1 /dev/dvd`  as root (setting the device node as
>> appropriate).
> I tried this:# /sbin/hdparm -d 1 /dev/hdc
> /dev/hdc:
>  setting using_dma to 1 (on)
>  HDIO_SET_DMA failed: Operation not permitted
>  using_dma    =  0 (off)
Is your hard drive a SATA drive? On my laptop, I had to add
hdc=noprobe to the boot options. The DVD drive is then handled as
SCSI device and DMA works. Before I added the option, I had the same
problems playing DVDs.


  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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