Same problem with which NVidia GPU? Without knowing more, or whether you have ever installed NVidia’s proprietary driver on this installation, there’s little we can suggest. If you can log into X at all, please provide here input and output from
inxi -SGxx
using code tags around the input and output of the command. You’ll probably get an error message and need to install it first:
sudo zypper in inxi Mesa-demo-x xdpyinfo glxinfo
Some of these might already be installed. Also please go to http:/susepaste.org and upload the file /var/log/Xorg.0.log and paste the resulting URL here.
Something to try if NVidia drivers are not installed is removing, as root user, the nouveau DDX driver package, xf86-video-nouveau
zypper rm xf86-video-nouveau; zypper al xf86-video-nouveau
from a root login prompt, or you can use sudo, or YaST (remove first, then taboo). Then reboot.