Well... I went nuts with this and here's what I came up with:
2.5.44 generic driver no DMA no mouse: works fine
2.5.44 + Viper driver no DMA no mouse: works fine
2.4.18 generic driver no DMA no mouse: works fine
2.4.18 generic driver + DMA no mouse: works fine
2.5.44 + Viper driver + DMA + mouse: works fine
2.5.44 + Viper driver + DMA no mouse: lockup
yes. 2.4.18 with the generic PCI DMA driver will let me set the drive
to DMA. And it works fine. dd'd the whole drive. The 2.5 generic
driver won't let me set DMA.
Looks like either I'm just plain lucky under 2.4.18, or there's
something bad w/ the Viper driver. I've been running 2.4.18 since
June 1 (and other 2.4 kernels before that) without any problems, so
I'm inclined to blame the new kernel version. It is, after all, a
development kernel.
Erik
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