caprea
The nouveau driver is already installed and used per default on antiX for nvidia cards, this is normal.It will get blacklisted after installation of nvidia.
If the driver installer from control-centre does not work for you and you want to install the nvidia-driver manually,
first download your matching driver from nvidia side
Then you have to go out of X with Ctrl + Alt + F2from your desktop
or with the method typing letter e on boot screen and adding a 3 to the line beginning with “linux” before booting.
When out of x type
sudo service slim stop
sudo sh NVIDIA-Linux-x86_64_your matching driver.run
You can ignore the “pre-install script failed” warning and choose “Continue anyway”
Answer the questions with yes and after installation do
startx
You might have to blacklist the nouveau manally
echo "blacklist nouveau" | sudo tee -a /etc/modprobe.d/blacklist.conf
reboot and do the procedure second time.
Another way to install the nvidia is to use the sgfxi script, which is also installed per default on antiX,
heres a manual, important point begins at “Running sgfxi directly”
http://smxi.org/docs/sgfxi-manual.htm
This method also might has to be runned twice.
Is there a reason why you are not using the current antiX21, because there for sure the baked in nvidia installer is working fine.
Please let us know more about your hardware for better helping, post
inxi -zv6
or
inxi -Gxx