How do I turn on DMA for ide-scsi DVD drives
spmirowski at shaw.ca
Tue Feb 5 05:43:27 UTC 2008
> Date: Mon, 04 Feb 2008 21:03:07 -0500
> From: Ric Moore <wayward4now at gmail.com>
> Subject: Re: How do I turn on DMA for ide-scsi DVD drives
> To: For users of Fedora <fedora-list at redhat.com>
> Message-ID: <1202176987.1182.80.camel at iam.wayward4now.net>
> Content-Type: text/plain
> On Mon, 2008-02-04 at 08:04 -0800, spmirowski wrote:
>> Alan Cox wrote:
>>> On Wed, 30 Jan 2008 19:37:36 -0800
>>> spmirowski <spmirowski at shaw.ca> wrote:
>>>> Back when Fedora handled disc drives as ide, I would use hdparm to turn
>>>> on DMA. Now that Fedora 8 seems to run them as SCSI devices, hdparm
>>>> can't tell them to turn on DMA. Any ideas how to get them blazing fast
>>> Its always done automatically by libata.
>> It would appear the issue wasn't DMA, but nvidia-config omitted
>> something from my xorg.conf that allows hardware acceleration for XVideo.
> ... and that was? Inquiring minds would like to know! :) Ric
The appropriate method would have been to make one change at a time in
the conf and test, but
I didn't want to spend that amount of time on it =P My guess is the fix
was in Section "Module".
Here nvidia-config only puts "Load "glx"". In a prior working xorg.conf
At least one of those Loads is for the composite graphics, but I can't
remember which one.
The following was mainly for composite and extra features, thus I
wouldn't expect these to
be part of the fix:
Option "AIGLX" "on"
Option "Composite" "Enable"
From Section "Screen" to Section "Device" I moved:
Option "RandRRotation" "True"
Option "RenderAccel" "True"
and added to Section "Device":
Option "AddARGBGLXVisuals" "True"
Option "DisableGLXRootClipping" "True"
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