On Tue, 2010-06-15 at 16:01 +0100, Alan Cox wrote: 
quoted text
> > Is one of these modules the driver for this controller? I think it's
> > AHCI: lshw says it uses ports cc00 ... and a bunch of others, and
> > those ports are claimed by ahci according to /proc/ioports. Ah! I need
> > better eyes. lshw already mentions that it's ahci...
> 
> AHCI will be driving it.

I have seen this problem with the 2.6.33 kernel in Fedora 13. The
problem goes away in 2.6.35-rc3. (Though networking is fubared for me on
that kernel, so I have not migrated to it.)

My understanding is the "fix" in the driver was to blacklist ncq for
that controller. I have not verified that yet.

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