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CD-Rom DMA
I am running RedHat 8 /w kernel 2.4.18 and i am trying to get dvds to play... i am using xine, and everything is working except the video is incredibly choppy, and my dvd reads very infrequently, i tried reading the "imrpove performance" faq for xine, and it says to enable DMA on my dvd... only thing is, i have tried everything and can't get it to work, i get the error :
HDIO_SET_DMA failed: Operation not permitted from hdparm any ideas? |
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yeah...
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I am having the same issue with Red Hat 8.
Enabling DMA should have nothing to do with which player app you use though. I have tried Xine, mplayer (still the best), and now I'm playing with videolan (not so great). I still can't imagine the player has much to do with it. My other searches have only turned up arcane mailing list postings regarding this issue, but no one has suggested a solution I can act on. The next thing I intend to try is a BIOS update, but I don't hold out much hope for that either. Enough other people are experiencing this issue. I hope somebody here has some ideas. I'm all tapped out for now. Anyway, here's my relevant system details:
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Enable DMA in RH 8.0
I had the same problem. Here's the solution from Red Hat's web site:
NOTE: As with the 8.0 release, IDE DMA on CD-ROM drives is disabled by default. If you are sure that your CD-ROM drive is capable of IDE DMA, place the following line in the /etc/modules.conf file: options ide-cd dma=1 I did it and now DVD is smooth as silk. |
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hdparm wasn't working! also thought it was funny because i posted that link about a week ago... http://www.linuxquestions.org/questi...&pagenumber=13 thanks chemist!! going to try that right now! |
works perfectly!!!!
thanks a whole bunch... only a few steps away until i could use linux as my full time os... |
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:( Quote:
:rolleyes: |
sorry if you thought i was flaming...
anyways, that was a good article... thanks for the thought... my dvds work perfectly now so i am :cool: i think that that enable dma thing should be more obviously documented.... |
It would be nice if it was an option during install.
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Linux as full-time OS...
Tnadrev:
Glad I could help! I myself have been 100% Linux on my home machine for two weeks today. Here are a few of my favorite links that helped with my transition. Be warned, they are RedHat 8.0 specific: Make it pretty: http://www.kde-look.org/ (the crystal icons are awesome!) Get MP3, DVD, Package Management: http://www.osnews.com/story.php?news_id=1890 Browse NTFS without recompiling Kernel: http://linux-ntfs.sourceforge.net/info/redhat.html Get a better screensaver if you are using KDE (like me!): http://www.jwz.org/xscreensaver/man1.html#12 Get a working CD burner: http://www.xcdroast.org/ (Update: I found a burner that I like even better-- K3B) http://k3b.sourceforge.net/ Install Mozilla (1.2.1)with Excellent Anti-aliased Fonts: http://ftp.mozilla.org/pub/mozilla/r...xft/RPMS/i386/ (You should read the Release Notes for 1.2.1 at http://www.mozilla.org/releases/mozilla1.2.1/ Also, this: http://www-uxsup.csx.cam.ac.uk/~jw35/docs/ms-fonts.html will be helpful in setting up TrueType fonts) |
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') |
use mplayer.
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hehe, if things were only so simple...
After I installed mplayer, the comand line version works but not the gui. I get fatal errors in the gui of mplayer. Also, when I play in cli... video is not choppy but it's all garbled.. |
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