Booting with pci=noacpi or acpi=off results in hda and hdc coming
up without DMA, which leaves the disk unusably slow. hdparm -d1 says
"HDIO_SET_DMA failed: Operation not permitted" (I tried with -X34 and
-X66 also).
Bootup messages from 2.5.69 with pci=noacpi:
http://encinc.com/~chuck/kt400/2.5.69-pci=noacpi.txt
Bootup messages from 2.5.69 with acpi=off:
http://encinc.com/~chuck/kt400/2.5.69-acpi=off.txt
lspci -vvv, /proc/{cpuinfo,interrupts,iomem,ioports}:
http://encinc.com/~chuck/kt400/2.5.69-pci=noacpi-info.txt
.config:
http://encinc.com/~chuck/kt402/config-2.5.69.txt
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