Alfredo Ferrari wrote: > Yes > > my PATA disk is the master on the second IDE channel (hdc). This is > actually the laptop modular bay where I can insert the DVD/2nd hard > drive/2nd battery. The same disk in the same bay on the same channel > of a D800 (where the primary disk is PATA and not SATA as in the M70) > works nicley with DMA enabled at boot time. > > Unfortunately it seems to be a known Linux kernel bug/limitation (see > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=163418 ) > a rather frustrating one I must say. I don't know much about this, but I came accross this problem for playing dvd with xine. It seems to me that the problem occurs on laptop with sata hd: there is a single controller for both ide drive and sata disk and you cannot set the dma. This problem does not occur with desktop where you have ide controller. I have two solutions for this: 1- hdparm -c1 /dev/hdc You can watch dvd in a better way (not perfect) 2- rip the dvd to the hard drive with dvdbackup and watch them (perfect) Hope this help. -- François Patte UFR de mathématiques et informatique Université Paris 5 - Paris http://www.math-info.univ-paris5.fr/~patte
