Installing Ubuntu 18.04 server ASUS GPU machine

1)Disable boot menu in ASUS machine
2)Download Ubuntu 18.04LTS
3)Creat bootable USB drive in UEFI mode( I used rufus software)
4)Go to bios and keep USB drive (boot medium) at priority
5)Save and exit
6)Select Install Ubuntu Server
7)Select all required option like language, country etc to next screen
8)Select available network
9)Enter Host name

10)Enter user name and password
11)Select partition type
        a)Manual
        b)Select SSD partition to install OS
        c)Format the partition and go back
        d)Select Guided partitioning

        e)Select free space from external drive to mount it Mostly followed at 1st time installation , don’t follow if you are updating OS in SSD and don’t want to lose data from external drive

        f)Select space size to mount

        g)Select done setting up the partition

        h)Select finish partitioning and write changes to disk

12) Install Unity
        a)sudo apt update
        b)sudo apt install ubuntu-unity-desktop
        c)sudo shutdown -r now
13)Install the NVIDIA display driver
        a)sudo add-apt-repository ppa:graphics-drivers/ppa
        b)sudo apt-get update
        c)sudo ubuntu-drivers devices
        d)Check recommended version which need to install
        e)sudo ubuntu-drivers autoinstall
        f)sudo shutdown -r now
        g)nvidia-smi
14)Create New sudo user
        a)Sudo adduser username
        b)Sudo usermod -aG sudo username
        c)Test sudo access
                A)su – username
                B)sudo whoami
15) Troubshoot If got error msg “PKCS#7 signature not signed with a trusted key
        a)Remove nvidia completely using purges/ppa
        b)sudo apt remove nvidia-
        c)sudo apt purge nvidia
        d)sudo apt autoremove
        e)sudo apt autoclean
        f)sudo apt-get remove –purge libnvidia-compute-XXX:XXXX
        g)sudo apt-get remove –purge libnvidia-compute-XXX
        h)Make sudo dpkg -l | grep nvidia return empty
        i)Install nvidia driver using autoinstall describe in step 13