My extension works correct. The problem is with xorg-server.tcz.
It should work without any configuration (in fresh installation) like in old times, but it's not work anymore. Newbies need to type:
sudo Xorg -configure
mv /root/xorg.conf /usr/local/share/X11/xorg.conf.d/xorg.conf
If the GPU is recognized it wrond way, black screen appears, newbies can't use Ctr-Alt-Backspace. And only solution is to reboot machine.
We have xsetup for Xvesa and Xfbev, why can we has similar for Xorg?