I installed cuda about 2 months ago in a python(anaconda) virtual envirnoment .Now I want to install cuda in root inorder to install darknetpy wrapper. so i tried to install cuda 9 in console. in this process nvidia driver will be removed and its need to be installed again. After that I tried to login to ubuntu but I coudn’ t. I tried to install nvidia driver again and restart ubuntu. Afte restarting I couldnt see login-screen gui . Also by switching to console mode , the console will changed(between different mdes: alt +ctrl+ f2 f3 f4 f5 f6) fastly and i coudnt type commands. How should I solve this problem?
ubuntu 18.04 nvidiav rtx 2080 ti