Hi Silver, follow exactly this commands:
cd ~
mkdir grin
cd grin
wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/cuda-repo-ubuntu1804_10.0.130-1_amd64.deb
sudo apt-get install build-essential dkms
sudo dpkg -i cuda-repo-ubuntu1804_10.0.130-1_amd64.deb
sudo apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/7fa2af80.pub
sudo apt-get update
sudo apt-get install cuda-libraries-10-0
sudo reboot
cd grin
sudo apt-get install cuda-toolkit-10-0
export PATH=/usr/local/cuda-10.0/bin${PATH:+:${PATH}}
nvidia-smi
nvcc -V
wget https://github.com/mimblewimble/grin-miner/releases/download/v1.0.2/grin-miner-v1.0.2-480780314-linux-amd64.tgz
tar -vxzf grin-miner-v1.0.2-480780314-linux-amd64.tgz
cd grin-miner-v1.0.2
nano grin-miner.toml
(EDIT YOUR CONFIG! with nano or use something better)
./grin-miner
tell us if it works now…