[gentoo-user] nouveau loads but freezes later, nvidia won't load

[Grant]

I've been using the nouveau video driver for a while, but lately video
has been freezing with X at 100% CPU and the only way out seems to be
ssh'ing in and rebooting.  The issue seems to be the same as described
here:

https://bugzilla.redhat.com/show_bug.cgi?id=596330

Disabling acceleration with the kernel parameter nouveau.noaccel=1
works but video quality is terrible.

I tried to switch to the nvidia driver but X won't load and Xorg.0.log
says it can't find a CorePointer device.  I remember having the
CorePointer problem with nvidia in the past but I can't remember how I
fixed it.  Does anyone know how to fix either driver?

- Grant