[MPlayer-users] Not able to turn on DMA for DVD drive in RHL8.0

[softrade]

DMA is on on the Harddisk but will not let me activate it on the DVD-ROM

Jooil Lee wrote:

> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> If you are using RH8, then you have to do something on modules.conf file
> under /etc. (something like ide-dma = 1)
>
> Please search on this mailing list you will find the answer. Also check
> the RH 8 release note. I think RH people mentioned about this issue in
> there.
>
> softrade wrote:
> > [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> >
> >
> > ------------------------------------------------------------------------
> >
> > Have swapped the Video Card with the ones mentioned in the Mplayer DOCS as OK
> > but I have not noticed a huge change in performance.
> > The system works well under Windows running software Cinemaster and PowerDVD. I
> > would expect that the open source model would be heaps better since so many
> > users have contributed feedback.
> >
> > I also suspected the crappy sound card and also changed that. I even changed to
> > a completely different Motherboard and CPU (AOPEN & PIII 800 MHZ CPU) Yes this
> > was a faster result but still not as good as under Windows Software Cinmaster
> > on the PII400. I noticed that the drive led under windows was continiously
> > flashing but under Linux it was noticably slower. The only difference that
> > stands out is the DMA enable. If I turn of the DMA to the DVD-ROM in Windows
> > the led flashes and about the same rate as the current config in linux. Why
> > can't I turn DMA on is the question? Why does hdparm tell me the operation not
> > permitted?
> >
> > Michael Osten wrote:
> >
> >
> >>[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> >>On Wed, 2003-03-05 at 21:03, softrade wrote:
> >>
> >>>[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> >>>----
> >>>
> >>
> >>>Have just installed Mplayer on my PII400 box. I have an Intel SE440
> >>>Motherboard and a 740Intel AGP Card. The performance is slow and I
> >>>believe it is because I can not invoke the DMA on with either the hdparm
> >>>-d1 command or echo command or by creating a harddisk file in the
> >>>/etc/sysconfig directory.
> >>>hdparm gives the reply operation not permitted. I know the drive &
> >>>chipset is DMA capible as it runs software cinemaster and powerdvd OK
> >>>under Windows 98 with DMA activated and is about the same speed as
> >>>Mplayer is without the dvd rom in non DMA mode.
> >>>
> >>>Has anyone had this problem and how did you fix it?? I have read
> >>>mountains of docs and have run out of ideas.
> >>
> >>man hdparm
> >>
> >>-d     Disable/enable the "using_dma" flag for this drive.
> >>              This option only works with a few  combinations  of
> >>              drives  and  interfaces which support DMA and which
> >>              are known to the IDE driver (and with all supported
> >>              XT  interfaces).   In  particular, the Intel Triton
> >>              chipset is supported for bus-mastered DMA operation
> >>              with many drives (experimental).  It is also a good
> >>              idea to use the -X34 option in combination with -d1
> >>              to  ensure  that the drive itself is programmed for
> >>              multiword DMA mode2.  Using DMA does not  necessar­
> >>              ily provide any improvement in throughput or system
> >>              performance, but many  folks  swear  by  it.   Your
> >>              mileage may vary.
> >>
> >>Its just a guess, but I'd place blame on that crappy video card.
> >>
> >>_______________________________________________
> >>RTFM!!!  http://www.MPlayerHQ.hu/DOCS
> >>Search:  http://www.MPlayerHQ.hu/cgi-bin/htsearch
> >>http://mplayerhq.hu/mailman/listinfo/mplayer-users
> >>
> >>_______________________________________________
> >>RTFM!!!  http://www.MPlayerHQ.hu/DOCS
> >>Search:  http://www.MPlayerHQ.hu/cgi-bin/htsearch
> >>http://mplayerhq.hu/mailman/listinfo/mplayer-users
>
> --
>
> Jooil Lee                       Telephone: (07) 3365 4408
> jooil.lee at its.uq.edu.au
> Information Technology Services
> The University of Queensland
> Brisbane Queensland 4072 AUSTRALIA
>
> _______________________________________________
> RTFM!!!  http://www.MPlayerHQ.hu/DOCS
> Search:  http://www.MPlayerHQ.hu/cgi-bin/htsearch
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