[CLUE-Tech] which DVD software do you use?

[Adam Bultman]

Hmm... I was referring to my video card (voodoo3 3000).  That's wierd that
you can't run hdparm on your drives.  I run 7.2 on this box, and for that
matter, all my other linux boxen don't mind having hdparm run on them.
Perhaps RH7.3 already does stuff like that for you?

Are you doing it as root, perhaps? You have to do it as root, otherwise,
it'll fail...  but I suspect you are doing that as root.

Then I'm not sure... Mine lets me do it just fine and dandy. You might
need to branch out onto other LUGs to find more people who run RH7.3. I
know of one in Kalamazoo, MI that has a few people running 7.3.

I don't know what to say-- it's always worked for me, although you might
want to do a man hdparm to find out more about it, maybe you have to set a
different dma mode, or something (or enable it in your BIOS?  I have no
idea).  Otherwise, if you rolled your own kernel, you may have taken it
out, or something (multimode, maybe).

-- 
Adam Bultman
adam at glaven.org
[ http://www.glaven.org ]


On Wed, 29 May 2002, Sean LeBlanc wrote:

> On 05-29 00:28, Adam Bultman wrote:
> > Make sure you run hdparm.  You won't get very good performance out of it
> > if you don't run hdparm on your DVD drive, and your hard drives.  Linux
> > uses your hard drives heavily when decoding.  I run hdparm from rc.local
> > on my systems:
> >
> > hdparm -d1 -c3 -k1 /dev/[drive]
> >
> > That will speed things up significantly.  I also noticed that things run
> > much better if your main drive is 7200 RPM and not 5400 RPM (seriously).
> > I switched, and with hdparm, and my card, it runs flawlessly.
>
> Interesting. I tried the options above, and I get:
>
> # hdparm -d1 -c3 -k1 /dev/hda
>
> /dev/hda:
>  setting 32-bit I/O support flag to 3
>  setting using_dma to 1 (on)
>  HDIO_SET_DMA failed: Operation not permitted
>  setting keep_settings to 1 (on)
>  I/O support  =  3 (32-bit w/sync)
>  using_dma    =  0 (off)
>  keepsettings =  1 (on)
>
> I get the same result on the DVD drive. Do I need to recompile kernel? This
> is the kernel "out of the box" from a RedHat 7.3 install.
>
> Also, my main drive is 7200 RPM (Maxtor 40GB 133/7200).  Which card are you
> talking about, BTW?
>
> Cheers,
>