Mouse selection weirdness

There are two ways to select the mouse type under Yast2: through Hardware / Select Mouse Model and through Hardware / Graphics Card and Monitor. The latter route gets you into Sax2, which has an Input Devices section. The odd thing is that the two modules have very different lists of mice. It's quite mysterious as to how the two selections interact, especially if the selections are different. I ran into an odd problem where my mouse wheel was recognized when it was moving down but not when it was moving up. (I verified by booting into Windows that the hardware was OK.) Eventually by fiddling with the mouse selections I got the upward motion to be recognized too, but I'm very unclear as to what is going on. Paul Abrahams