linux-kernel - Re: DMA activation problem on Intel ICH7 82801GBM/GHMA

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Date:	Sun, 10 Sep 2006 09:01:59 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Simon MORIN <simon-morin@...oste.net>
CC:	linux-kernel@...r.kernel.org
Subject: Re: DMA activation problem on Intel ICH7 82801GBM/GHMA

Simon MORIN wrote:
> Hello !
> 
> I have installed Gentoo Linux on my Acer Aspire 9410 laptop (Core Duo).
> 
> The hard drive and the cdrom are PATA devices and activating DMA on them seems 
> to be impossible. The IDE controller is an Intel 82801GBM/GHM (ICH7 Family).
> 
> I checked the option "Intel PIIXn chipsets support" (CONFIG_BLK_DEV_PIIX=y) 
> in "ATA/ATAPI/MFM/RLL" but it doesn't recognise the chipset (nothing appear 
> about this in dmesg), so I can only use the generic ide driver. 
> 
> When I run hdparm as root,  it shows me this :
> 
>> hdparm -d1 /dev/sda
> /dev/sda:
>     setting using_dma to 1 (on)
>     HDIO_SET_DMA failed: Invalid argument

Same old combined mode problem.  Google around for this FAQ...

	Jeff



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