I just installed the two nvidia drivers from the restricted drivers section when I was prompted thinking that it will improve my performance. But after I restarted the computer a prompt came up saying that I did not have the appropriated hardware to run the unity server (which is odd as it was running smoothly before). What can I do about this?
Try removing "Experimental 3D support for NVIDIA cards" as this is for the open source driver Nouveau.
Don't forget to reboot
comment from OP - Done, I removed those and its working again