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Re: problem with turning on the DMA (was: better than nice -d 19)



Hello 'Shot'!

On Thu, Nov 13, 2003 at 12:17:07PM +0100, Shot wrote:
shot@chastell:~$ sudo hdparm -d1 /dev/hda
/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma    =  0 (off)
[... snip ...]
00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT8233/A/C/VT8235 PIPC Bus Master IDE (rev 06)

I'd say it seems you have to load the driver for your chipset first,
but apparently this driver is built in your kernel:
fernst@live:~$ grep -i via82cxxx /boot/config-2.4.18-bf2.4
CONFIG_BLK_DEV_VIA82CXXX=y
CONFIG_SOUND_VIA82CXXX=m
(I started just like you going from a Woody install to
testing/unstable)

The 2.4.18 driver is supposed to work for
VT82C586A/B/VT82C686/A/B/VT8233, while the 2.4.19 add support for
VT8233/A/C and 2.4.20 and above know about VT8235, so it looks like
you have to upgrade at least to 2.4.19, depending on what you _really_
have.
Try installing one of the kernel-image-2.4.22-* where this driver is
included as a module or try to roll your own.

Cheers,
Flo

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