LinuxQuestions.org - CD-Rom DMA

- Linux - Hardware (https://www.linuxquestions.org/questions/linux-hardware-18/)

- - CD-Rom DMA (https://www.linuxquestions.org/questions/linux-hardware-18/cd-rom-dma-34839/)

install it properly then. give us the error message and we might be able to help you.

Ouch...

Playing /dev/dvd
Using CSS Key-cache dir: /home/jfritts/.mplayer/DVDKeys/RAMMSTEIN_DVD
Reading disc structure, please wait...
libdvdread: Can't open file VIDEO_TS.IFO.
Can't open VMG info!

odd.. I can see the file...

You need
options ide-cd dma=1
in /etc/modules.conf before you can enable dma with hdparm

Yup, it's already in .... been in....

Quote:

Originally posted by Warlock|USKTA|
I have the VERY same issue however when I turned the options dma thing on in my modules.conf file , dvd's don't play at all.

I have been hitting up the ogle user-list and everything they have suggested helps but not that much.

Any clues as to what else I can try?

Video is super choppy without dma turned on but when I turn dma on, dvd's wont play at all. Every program seg-faults out. (every program = every dvd playing program 'ogle/xine/vlc')

Have you tried the packages from FreshRPMs.net?
Get and install EVERYTHING DVD-related, including DeCSS.
:jawa:

I was having a similar problem on my HP Omnibook Laptop XE2. I was running RH7.3 with Xine. No dice so I got rid of it and upgraded to Mandrake 8.0. This worked and ran my DVD's great, but Mandrake put a funky load on my system that I couldn't resolve and I prefer RH so I reloaded my whole system back to RH 8.0. I got Choppy video. Knowing it worked with Mandrake I began to tweak my system as time permitted. I finally got it to run smooth as silk with Xine, GXine, and Ogle. I did the following. Hopefully it might work for those here.
I first enabled my DMA to 1 and added it to my config as listed on the Xine website, I next upgraded my Kernel to the lastest by Red Hat, then I tweaked Xine by using the tar files as opposed to the rpm, then I tweaked my Hard drives using HDPARM. (See below) and FINALLY, I did some Kernel tuning to make it smooth. I can give you my Kernel tuning but every machine is dif so you'll have to play with it for your particular pc.

My laptop is HP Omnibook XE2 with a Intel 500 MHz PROC, 256 MB RAM with a 12 GB HD and DVD. My swap partition is set for 512 K

Hope this helps some of you

[root@Orion root]#
[root@Orion root]# hdparm -c3 -d1 -k1 /dev/dvd

/dev/dvd:
setting 32-bit IO_support flag to 3
setting using_dma to 1 (on)
setting keep_settings to 1 (on)
IO_support = 3 (32-bit w/sync)
using_dma = 1 (on)
keepsettings = 1 (on)
[root@Orion root]#
[root@Orion root]# hdparm -c3 -d1 -m16 -k1 /dev/hda

/dev/hda:
setting 32-bit IO_support flag to 3
setting multcount to 16
setting using_dma to 1 (on)
setting keep_settings to 1 (on)
multcount = 16 (on)
IO_support = 3 (32-bit w/sync)
using_dma = 1 (on)
keepsettings = 1 (on)
[root@Orion root]#

By the way Funny how Mandrake 8 worked out the box while I had to mess around with Red Hat. Makes someone want to Bechmark huh?

Quote: I'm so far behind I think I'm in front !!!