[Bug 55929] Re: DMA not enabled for IDE disks

[Gustavo Carneiro]

I compiled my own kernel, with apt-get install linux-source-2.6.17 and
some other commands, while applying the patch.  Looks like the -6 kernel
in ubuntu edgy didn't include the patch, and looks like the patch fixes
my problem completely (hdparm -tT goes from 3 to 25 MB/s).

Are you sure the patch was included in the ubuntu kernel tree?

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DMA not enabled for IDE disks
https://launchpad.net/bugs/55929