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I have installed a Suse 8.1 Professional and I have updated it to a 2.6.11.7 kernel.
when i use my cd-rw to burn a cd it works very slow. I saw that dma is not enabled for my cd-rw. When I try to set it up with
hdparm -d1 /dev/hdb
i get:
/dev/hdb:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)
My ide chipset is a KT400 and cd-rw is using linux ide-cdrom driver
How can i set up dma?
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Not building your chipset into the kernel doesn't set the dma option on. If it's compiled in then tick the option Enable DMA only for disks (IDEDMA_ONLYDISK) under ATA/ATAPI/MFM/RLL support (IDE)
You should have VIA82CXXX chipset support (BLK_DEV_VIA82CXXX) ticked in your kernel, I used to have a KT400 chipset so it works fine.
I assume you running that command as root?
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