I have an "AlpsPS/2 ALPS DualPoint TouchPad" touchpad device and "Alps DualPoint Stick" in my Dell Latitude E6510, running ubuntu 12.04. I must say the driver has come along quite well: almost everything about it works very nicely, even two-finger scrolling.
My problem with it is that I cannot use the middle mouse button of it in Blender or gimp. It does work for X pasting however.
This is what the touchpad looks like:
There are actually 5 mouse buttons, but they (should) map to 3 physical mouse buttons (a regular 3 button mouse).
The middle mouse button doesn't work in applications like Blender or gimp. Funnily enough, in chromium it works (it closes tabs).
Also xev shows a "button 2" event when clicking it, and the fact that pasting works shows that the button press is recognized.
Could it be the paste function that is canceling out further use of the button in other applications? Or can it have something to do with the driver? I really don't know what the cause is.
Strangely enough, if I remap the middle mouse button to another one, for example the right, it works in other applications.
Did someone have the same problem and have a solution? I don't really know where to look next.
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