> On Thu, 2003-01-09 at 12:29, Anton Piatek wrote: >> Hi, i am trying to enable dma in Redhat 8 on my dvd drive, so i can >> watch dvds. mplayer plays them, except that they are jerky when the >> dvd has to keep reading, then pauses between reads. I tried adjusting >> cache options for mplayer with no luck, and tried adjusting the speed >> of the drive. >> >> does anyone know why >> >> |# hdparm -d1 /dev/cdrom >> | >> |/dev/cdrom: >> | setting using_dma to 1 (on) >> | HDIO_SET_DMA failed: Operation not permitted >> | using_dma = 0 (off) >> >> fails. the dvd drive is a fairly nice (panasonic?) dvd drive, that >> plays dvds admirably in windows (when media player will let it...) > > I had the same problem initially. By default, Red Hat does not allow > DMA on for _some_ IDE CD-ROMs and DVDs. To allow DMA to be turned on, > add this line to the /etc/modules.conf file: > > options ide-cd dma=1 > > It fixed my performance problems. > > Best Regards, > Keith Which is exactly what the RELEASE-NOTES says to do. Though, it does only say CD, but should say CD or DVD -- -Cheers -Andrew MS ... if only he hadn't been hang gliding! -- Psyche-list mailing list Psyche-list@redhat.com https://listman.redhat.com/mailman/listinfo/psyche-list
