ubuntu-x-swat team mailing list archive

[Seth Forshee <seth.forshee@xxxxxxxxxxxxx>]

On Mon, Oct 17, 2011 at 03:04:09AM -0000, pauljohn32 wrote:
> Dell Precision M4600 Debian 3.0.0-1-amd64
> 
> I've after alps-dkms version 0.6 or so, I have noticed occasional weird
> behaviors.  Sometimes cursor flies to far left of screen, sometimes the
> touchpad seems to become nonresponsive for a moment.  Often it wakes up
> and works again, sometimes I have to remove and reload the module.  Two
> times tonight I've noticed this and have looked into the input-events
> output.  It turns out the Debian input-utils is not build correctly for
> their kernel, but the Ubuntu input-events will install and so it seems
> to work.
> 
> I can't say if these files are going to help, but I followed Seth's
> instructions and I am attaching 2 sets of files in a tarball (since I
> can't find a way to attach more than one file in this interface). OK?

Thanks pauljohn32, that's exactly what I need to help debug erratic
behaviors. Do I understand correctly that these logs represent the
behavior where the touchpad becomes unresponsive? It's odd that you
would see data from input-events but no movement from the cursor.

One possible reason for the cursor jumping could be that a second
finger or other point of contact is touching the touchpad, or getting
close enough to register as a touch. The ALPS touchpads don't seem to
have good finger tracking, so sometimes when there are multiple touches
the position reported by the touchpad will suddenly jump from one
contact to the other, which can translate to a sudden quick movement of
the cursor. Any chance this is that you are seeing?

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-input-synaptics in Ubuntu.
https://bugs.launchpad.net/bugs/550625

Title:
  Alps touchpad is recognized but synaptics clients and scrolling do not
  work

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