I have a Lenovo Thinkpad T550 with a trackpoint mouse in the middle of the keyboard.
It was working great, but then the keyboard became defective so I bought a replacement keyboard (Lenovo did not sell any so I bought from a non-official website that insists they sell only Lenovo-produced parts). After inserting the new keyboard, the keys work fine, but:
PROBLEM: The cursor always slowly moves to the lower left.
One pixel every few seconds.
It is troublesome because:
- When selecting from a list (ex: Firefox URL autocomplete) with the keyboard arrows, the cursor moves and loses my selection
- When watching a movie, the mouse movement unhides the GUI controls every few seconds
I have tried putting the red plastic thingy in all four positions, but the cursor always keep migrating to the lower left.
I have heard that UltraNav is supposed to perform calibration? I am on Linux (Ubuntu 2016.04.1) so I might not have it. My previous keyboard did not seem to need it though, and the OS has not changed.
QUESTION: How can I prevent the cursor from moving on its own?