Re: [2.6.6] Synaptics driver is 'jumpy'

Jan De Luyck
2004-05-17T07:04:20Z

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On Monday 17 May 2004 08:42, Dmitry Torokhov wrote:
> 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.

Ok. Passing on to acpi-devel@lists.sourceforge.net.

I've looked in the archives, and the problem looks very much like the one in
this thread:

http://sourceforge.net/mailarchive/forum.php?thread_id=4172848&forum_id=6102

And I've been noticing some keyboard glitches too, but these were to
unfrequent, and usually occur only in one application (gaim) so I figured it
might be a bug in gaim... guess not...

Unfortunately, the hints in this thread don't help. I've browsed the input
system FAQ, but no dice.

The only thing that gives me a working synaptics touchpad is acpi=off.

It worked fine with 2.6.5.

Jan

- --
Those who do things in a noble spirit of self-sacrifice are to be avoided
at all costs.
-- N. Alexander.
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