Re: Radeon 2D or 3D issue

To use pkgsrc Xorg:

cd pkgsrc/lang/libLLVM
cvs update -D "13 months ago" -A -Pd
# To get libLLVM 3.8.x

echo "X11_TYPE=modular" >> /etc/mk.conf

And install meta-pkg/modular-xorg.

You may need to delete old work directories:
rm -rf pkgsrc/*/*/work

and possibly some packages that you installed without pkgsrc Xorg.
rm -rf /usr/pkg /var/db/pkg is a quick way to delete all packages.