>  I'm not sure I understand this - Xmfbpmax doesn't do anyting with /dev/pm.
>It attempts to open /dev/mouse, but if the open fails, the error message
>complains about being unable to open pm.

Oops, braino on my part, should've been /dev/mouse.
(The pm is just used in the error printf(), as you point out.)

I've committed a fix for this, and the next snapshot will create
/dev/mouse -> /dev/fb0 automatically.