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To: gentoo-releng@g.o
From: Roy Bamford <neddyseagoon@g.o>
Subject: Re: DMA support on Acer Travelmate 4150
Date: Sat, 26 Jan 2008 11:04:09 +0000
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On 2008.01.26 10:13, Frank Lester wrote:
> I have been for some time with Gentoo, but recently I bought an old
> Acer
> Travelmate 4150. The exactly problem is explained here:
> 
> http://forums.gentoo.org/viewtopic-t-356400-highlight-travelmate
> +4150.html
> 
> It seems to exist a solution, and I was hoping that with 2007.0 the
> problem
> was solved, but it wasn't. So, looking at the explained solution, 
> just
> a
> copuple of lines added, I would like to have this implemented in
> 2008.0.
> Now, it is almost impossible to install Gentoo on my Acer, it is so
> slowly
> that it can desesperate yourself.
> 
> I have tried Ubuntu 7.10 and the problem was solved with them. With
> Ubuntu
> 7.10 DMA is active. From Gentoo there is no way to activate DMA
> without the
> patch.
> 
> Thanks!
> 
> 

Frank,

gentoo-releng is not really a help list, so I have replied off list.
You need a later kernel than the one on the 2007.0 liveCD.
The current gentoo-sources is fine, then set you kernel configuration
as this post http://forums.gentoo.org/viewtopic-p-4570091.html#4570091

I wrote that in response to a Intel ICH7 question but it works for ICH6 
chipsets and later. No patch is needed.

- -- 
Regards,

Roy Bamford
(NeddySeagoon) a member of
gentoo-ops
forum-mods
treecleaners

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References:
DMA support on Acer Travelmate 4150
-- Frank Lester
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Updated Jun 17, 2009

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