[Bug 110636] Re: hdparm - cannot set dma on IDE hard drive that works via pata

[Stoanhart]

"either way, this wont get fixed in feisty."

It is definately a lack of functionality in the driver. My CD drive does
support DMA, as it worked pre-libata. I think this is an important
issue, and should be addressed WITHIN feisty. Since the old pata driver
is still included, all that is needed is a simple way (a script maybe?)
to switch back to it. I have tried to do this by blacklisting libata,
but this did not work.

I'm sure the kernel team is much more knowledgeable about how to do
this. Could they not whip up a quick and dirty script for us? It would
sure please a lot of people. Feisty is noticably slower than previous
versions of Ubuntu for me. Whenever heavy disk activity is going on
(like tracker indexing), the computer becomes extremely unresponsive and
difficult to use. This is exactly like what I used to experience under
Windows when the hard disk was not in DMA mode.

Thanks

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hdparm - cannot set dma on IDE hard drive that works via pata
https://bugs.launchpad.net/bugs/110636
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