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

[Jeff Garzik]

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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