optimizing dvd playback w/ hdparm
Posts: 1
Hi all. I just installed Mepis a few days ago, and I'm quite impressed - I've recently made the switch to Linux, and this is the best distro I've tried. It's the only one that detected all my hardware without a hitch.
One issue though has come up. In order to optimize my dvd playback, I attempted the following command:
hdparm -d1 /dev/dvd
In response, I got the following error message:
/dev/dvd:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)
Anyone able to tell me what I should do?
Thanks!
Another possible cause is
Posts: 2299
Another possible cause is that you have a CD/DVD with a SATA-IDE converter. Do as Drlizau says and try as root. If that does not help:
- Alt F2
- kdesu kwrite /boot/grub/menu.lst
- Find line starting with 'kernel'and add: combined_mode=libata
- save file
- IN same Kwrite session opn /etc/modprobe.d/modprobe.conf. Add line: options libata atapi_enabled=1
Your DVD drive wil now be seen as sda or sdb or sdc or whatever. Hdparm will not work since that is for IDE drives only. Speed will be OK though.
Newbie or not Newbie, there's always a question
root or user?
Posts: 4864
suggests that you weren't root when you tried this