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SubjectRe: Serious IDE problem still present in 2.6.14
Thanks for the reply.  As per Andrew Morton's suggestion, I've opened a
bug at
(, it has all the
relevant information (basically copies of what I've posted on
linux-kernel and linux-ide). So far it's still sitting there as "NEW".


On Mon, 2005-11-14 at 16:17 -0500, Bill Davidsen wrote:
> David Ronis wrote:
> > I've been busy and have been a bit late responding to this. In short,
> > have a problem with disk performance on a HP Pavilion laptop in the
> > 2.6.1[34] kernels (it works fine under 2.6.12.x). I've summarized much
> > of the tests I've run on in a post to linux-kernel and linux-ide (when
> > we thought it was a problem in the ATIIXP module) at:
> >
> >
> >
> > After working with Stefan for a bit, we determined that the problem is
> > in the ACPI modules (in fact setting ACPI=ht at boot fixes it, although
> > other things seem to break, as described below). Stefan suggested I
> > repost the bug to the linux-kernel list, and so here it is.
> Is this read performance, write performance, or both? And have you
> checked the output in dmesg? See anything with blockdev? Detailed lspci
> output and /proc/interrupts?
> I don't have anything in mand, just looking for information which might
> in some universe get diddled by ACPI.

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