X.org 6.9.0 fails start with mga_hal and mousewheel not working anymore

[Lauri Järvenpää]

> I killed moused and tried to configure X to straight /dev/psm0 but
> this had exactly same problems.. I would use Wacom mouse but then I
> need to keep pad on my lap constantly.

Solved.
I commented out "-z 4" option from rc.conf, and added Option
"ZAxisMapping" "4 5" to xorg.conf (in addition to Option "Buttons"
"5"). Now it works as expected.

Cheers,
lauri j