Messages in this thread | | | From | Dmitry Torokhov <> | Subject | Re: [2.6.6] Synaptics driver is 'jumpy' | Date | Mon, 17 May 2004 01:42:41 -0500 |
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On Monday 17 May 2004 01:32 am, Jan De Luyck wrote: > On Sunday 16 May 2004 21:29, Dmitry Torokhov wrote: > > 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? > > Neither has any effect. > > I've also disabled CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI, figuring there might be > some problem with that, but that doesn't change a thing. >
Perhaps we need to check with ACPI guys as it seems that you are affected by this code and there were some changes to ACPI subsystem between 2.6.5 and 2.6.6.
> Also, I'm wondering if there's any point in using the CONFIG_X86_PM_TIMER > timesource? >
It is supposed to be unaffected by frequency changes which is a good thing. I am running with it, but I think I've seen couple of reports that it caused time go twice as fast.
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