Plextor PX-716A DVD burner and xine

[Angelo Machils]

>I have an FC3 system ASUS P5GD2 deluxe with a Plextor PX-716A DVD
>burner.
>
>When I try to play DVDs in this drive the frame rate is horrible.  Jerky
>playback, dropped frames.
>
>I ran xine-check and I found that DMA does not appear to be set for this
>DVD drive.  I tried setting DMA on using 
>
>hdparm -d1 /dev/hda
>
>But I get the following:
>
>HDIO_SET_DMA failed: Operation not permitted
>
>I checked the jumper settings on the drive and the bios settings and
>best I can tell they should allow DMA to be setup.
>
>
>The other odd thing I have noted is that when I insert a DVD or CD in
>this drive I have to manually mount it to access it.  I used this drive
>to load the system from the FC3 CDs.  I have used this drive to burn a
>CD-RW with no problems.
>
>
>Ultimately trying to get this drive to work with Mythtv.
>
>Any ideas on this one?
>
>
>  
>
You should try hdparm -d1 -X66 /dev/hdc as root and on my Plextors (716A 
burner and 116A reader) it works without problems. Still have to find 
out where to put this statements for both drives so they work at startup 
of the system.

The issue you see that you manually have to mount them seems to be a 
universal problem with Plextors under FC (don't know about other 
distros). Someone on this list also noticed this on FC (with a 716A and 
320A) and filed a bug-report:

https://bugzilla.redhat.com/beta/show_bug.cgi?id=143421
The hint about upgrading the kernel to a testing one doesn't help btw.

Kind regards, Angelo