How did I rollback to Xorg 6.7?
Set “*default date=2004.12.23.00.00.00” in cvs-supfile and “portinstall x11-servers/xorg-server”. Then add “'xorg-server-*',” to HOLD_PKGS in pkgtools.conf to prevent accidental upgrades.
For all I know, the regression might have been a broken compile with Xorg 6.8. Will try again after Eric Anholt does a revision to the port.