Re: Touchpad problems with latest kernels

From: Dmitry Torokhov
Date: Mon Aug 14 2006 - 11:38:58 EST

On 8/14/06, Andreas Mohr <andi@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
On Mon, Aug 14, 2006 at 10:38:04AM -0400, Gene Heskett wrote:
> I don't *think* I'm a lunatic, but I'm equally sure that the synaptics is a
> pain in the ass and should be capable of being totally disabled somehow,
> hopefully short of opening the lappy up and unplugging or cutting every
> lead to it until such time as it can be made to behave instead of
> responding to every thumb waved 1/2 to 3/4" above it. I've gotten hand
> cramps trying to hold my thumbs far enough away from that abomination to
> stop such goings on.
> So count this as a vote FOR doing something about the synaptics touchpad
> situation.

I'm seeing issues as well on my Dell Inspiron 8000 (yes, it has a Synaptics,
NOT ALPS as usual on Inspiron):

(without a mouse plugged in) after random times the pointer exhibits
clear signs of craziness, moving on its own (mild issue) or jumping
uncontrollably (worse) or being completely off-screen most of the time

IIRC (I'm quite sure about this) the very first time that I've seen
this phenomenon happen on my notebook was around 2.6.9,
and I attributed this to broken/grown-old hardware on my notebook
(thus from then on mostly running with external mouse attached),
but since several people now report very similar issues
one would think that it's a driver calibration or touchpad setup issue
instead of actually broken touchpad hardware.

Plus, I'm sometimes having issues with pointer movement (cursor won't advance
any more unless I stop touching the touchpad for a few seconds to let it
reset somehow - probably a bytestream hickup issue).

Any clues?

Yes, you might want to reseat your touchpad connector and vacuum the
case a bit. Inspiron 8000 is almost the same as 8100 and I am using it
constantly ;) Well, I thought my keyboard broke because PgUp stopped
working but it recovered after I got a hairball from under the key.
Just make sure you do not pull ACPI battery info to often.

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