weird mouse movement in 2.6.0-test9

Lately, I've been noticing the mouse cursor ever so slightly moving around as I type. I was beginning to wonder about my beer intake when I discovered that I can hold a modifier like shift or control and watch the mouse cursor dance around the screen. Doesn't happen all the time but often enough that if you have a similar problem you won't have any trouble reproducing.

It looks as though there's an entity in the input subsystem that normally ignores spurious noise from the mouse. This "noise suppression" seems to be disabled when handling key presses.

Some details. The mouse is a basic logitech wheel mouse connected via usb to a dell i8k laptop. To rule out the touchpad/keyboard clitorus, I can disconnect the mouse and the problem stops.

So has anybody else seen anything like this or should I be seeking therapy?

-g

I have seen this on my i8k since bios a18. The stick generates random moves and clicks when I press and hold a key. (The moves/clicks are indistiguishable from real stick usage)

Peter

Mmm. Seems you're right.

So I grabbed the latest synaptics stuff (from a couple of days ago) and updated my XF86Config-4. There I discovered that I am not crazy just stupid.

I had an (InputDevice) entry looking at /dev/input/mice, another one looking at /dev/input/eventX and a third looking at /dev/psaux. Removing the cruft and updating the synaptics entry has fixed my problem.

Sorry for the noise.

-g