On Sun, 22 May 2005, Richard D wrote:
> pciide0 at pci0 dev 17 function 0 vendor "ATI", unknown product 0x437a
> rev 0x00: DMA (unsupported), channel 0 configured to native-PCI,
> channel 1 configured to native-PCI
> pciide0: using irq 10 for native-PCI interrupt
> pciide0: channel 0 ignored (not responding; disabled or no drives?)
> pciide0: channel 1 ignored (not responding; disabled or no drives?)
> pciide1 at pci0 dev 18 function 0 vendor "ATI", unknown product 0x4379
> rev 0x00: DMA (unsupported), channel 0 configured to native-PCI,
> channel 1 configured to native-PCI
> pciide1: using irq 11 for native-PCI interrupt
> pciide1: channel 0 ignored (not responding; disabled or no drives?)
> pciide1: channel 1 ignored (not responding; disabled or no drives?)
> pciide2 at pci0 dev 20 function 1 vendor "ATI", unknown product 0x4376
> rev 0x00: DMA (unsupported), channel 0 configured to compatibility,
> channel 1 configured to compatibility
> wd0 at pciide2 channel 0 drive 0: <ST380011A>
> wd0: 16-sector PIO, LBA48, 76319MB, 156301488 sectors
> wd1 at pciide2 channel 0 drive 1: <WDC WD205AA>
> wd1: 16-sector PIO, LBA, 19569MB, 40079088 sectors
That's your problem. Your disks are in PIO (very old-fashioned) mode, no
DMA. iirc this means that every byte transferred will produce an
interrupt.
The ATI chipset on your motherboard seems to contain a lot of unsupported
devices, it's likely very new and some work needs to be done to get it
supported.
-Otto
