GTX 1080Ti Graphics Driver on ubuntu problem

Hi, I know there are alot of guides already and i have tried different keyword search and tried(almost) all of the variations approach but with no luck, drivers are found in /proc/driver/… but nvidia settings still gives error “try sudo nvidia-xconfig & restart xserver” <- means it is not activated right (?) HELP! PLEASEEE

Edit : UEFI Secure Boot is not disabled, because Ubuntu is not even booting after disabling Secure boot
Ubuntu 14.04 is used here

How did you install the driver?
Please run nvidia-bug-report.sh and attach output file to yor post.