i cant set udma

xprometeus · n00b Joined: 19 Jan 2004 Posts: 50

i cant set udma,what is wrong ?

hdparam -d1 /dev/hda

/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed:operation not permitted
using_dma = 0 (off)

thank for your help

_Max_ · Posted: Mon Feb 02, 2004 7:56 pm Post subject:

Found hdparam?

Were you root when you tried this?
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Moled · l33t Joined: 09 Jul 2003 Posts: 635

got support for your chipset in your kernel?

TheCoop · Posted: Mon Feb 02, 2004 9:31 pm Post subject:

what does hdparm /dev/hd* tell you? have you got 'Enable DMA by default' in your kernel config? what does 'dmesg' tell you?
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Dancy · n00b Joined: 27 Jan 2004 Posts: 59 Location: Torino

bircho · Posted: Fri Feb 06, 2004 4:58 pm Post subject:

I had the same problem too. As someone said, you need to configure the kernel with suport for your chipset.

Acka · n00b Joined: 26 Sep 2003 Posts: 28

yep same problem here. My mobo chipset is a SiS 645DX (unfortunately), Im using the 2.6.1 kernel and go to:

# cd /usr/src/linux && make menuconfig
Device Drivers --->
ATA/ATAPI/MFM/RLL support --->
<*>SiS5513 chipset support

exited and save
make && make modules_install (i dont think make modules_install is needed)
rebooted

I still come up with the same error being:

bash-2.05b# hdparm -d1 /dev/hda

/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)