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    SubjectRe: [2.6.6] Synaptics driver is 'jumpy'
    On Sunday 16 May 2004 02:06 pm, Jan De Luyck wrote:
    > On Sunday 16 May 2004 19:18, Dmitry Torokhov wrote:
    > > Hmm.. there was no changes to PS/2 processing between 2.6.5 and 2.6.6
    > > except for some Logitech tweaking, but it should not affect Synaptics
    > > handling in any way...
    > >
    > > Could you check if you still have DMA enabled on your disks, check your
    > > time source (TSC, ACPI PM timer, etc) and probably boot with acpi off?
    > >
    > > Thank you.
    > Dmitry,
    > Booting with acpi=off fixes the problem, although I'm curious to what the
    > problem actually is.
    > I've attached the dmesgs from 2.6.6, 2.6.5, and 2.6.6 with acpi=off.
    > There is a line that says "Invalid control registers" that I wonder where it
    > comes from, but you might see something more here than I do.

    It comes from speedstep-centrino module, could you please try booting with ACPI
    but without speedstep-centrino loaded? Also, does it help if you do not compile/
    load ACPI battery module?

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