hi, nice to meet you everybody! is the first time i’m going to write here… at first i want you excuse me , coz my english is not very good… so , try to understand plz!!!
i had this problem with photon and the mouse since qnx 5.1 , and the first version i used was qnx 5.1 
my mouse (a serial generic mouse with a wheel in the middle) doesn’t move very good, it is very strange… it moves two pixels and return to the initial position 3! … when i move it down , it moves up and a lot of other problems…
the only mouse that works, is a very old serial genius mouse, i’d like to use the one i’ve now…
plz help me! what is happening? what do i have to do to fix it?