So you are set to go?

This can happen in the middle of a release, too. If you upgrade and re-boot
sometimes (rarely) it can happen that you find that you only have 2D. You
need to re-install the display adapter and re-boot. The adapter and kernel
must work together. If one gets upgrade and the other isn't you can go back
to 2D. The fix is quick, but it does sometimes happen.