Have you tried commenting out the hdparm commands in the initscripts and
booted with a kernel that enables DMA (instead of using hdparm -d1)?
-ben
On Tue, Sep 03, 2002 at 11:00:00PM -0700, Joseph N. Hall wrote:
> Yes, DMA makes the drive completely non functional and eventually
> hangs the machine after some amount of attempted use. This is
> regardless of when DMA is enabled, whether via the standard
> RedHat "harddiskn" mechanism or manually with hdparm.
>
> -joseph
>
> On Tue, 3 Sep 2002 22:37:57 -0700, Matthew Dharm <mdharm-kernel@one-eyed-alien.net> wrote:
> >
> > Have you tried enabling DMA on the drive?
> >
> > Matt
> >
> > On Tue, Sep 03, 2002 at 06:45:00PM -0700, Joseph N. Hall wrote:
> > > Dear Kernel Folks,
> > >
> > > I am trying to determine the cause of the poor performance of a
> > > an IDE DVD device on my new machine. I have an IDE Panasonic DF-210-type
> > > DVD-RAM/R/ROM in a new machine with Soyo KT333 motherboard. It
> > > transfers data slowly (below DVD speed), consumes large amounts of
> > > system time, and slows down the user interface and even system
> > > clock (which can run as slow as 1/4 speed while the drive is
> > > going).
> > >
> > > The interrupt ERR count below seems to be mostly related to use
> > > of the DVD drive.
> > >
> > > Maybe it's something simple. If not, I'll be glad to do further
> > > work to help diagnose the problem.
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