I seem to recall  setting the dma. I think there may have
been some problem with that in relation to the promise controller.
I'll revisit that.  By the way, the hardware works great if I put in a
usb-2.0 mass-storage external case. I wonder why not using dma would
slow the clock down, etc...


*Marino Fernandez wrote:
> On Friday 06 June 2003 08:04 am, John Lapeyre wrote:
> > This is probably not debian specific, but I have been revisiting this
> > problem for a couple of years and searching on the web and am stumped.
> >
> > Dvd is too slow to view a dvd (I've tried a bunch of programs, am
> > using vlc now) I have to copy the files to hard drive. But the
> > transfer is slow, about 1MB/s and the desktop has bad very response
> > time during this time and the system clock runs very slow. The mouse
> > in particular will hang for a second or so at a time. 
> 
> You probably don't have DMA activated.
> 
> I have my DVD on /dev/hdc, and I do this as root:
> 
> hdparm -d1 /dev/hdc
> 
> Then, if this works, you can put a script on /etc/init.d and a link to it in 
> /etc/rcS.d, so DMA gets activated during boot-up.... however I am not very 
> sure about this last step, I've never done it in debian (only in SuSE), so 
> maybe one of the more learned debianites can tell us about it.

-- 
John Lapeyre http://physics.arizona.edu/~lapeyre


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