I successfully installed CUDA Toolkit by following the process mentioned on the official site. But during installation, it also upgrades the Nvidia drivers. Currently nvidia-driver-390 is working but after CUDA Toolkit installation it upgrades and those new drivers don't work. In Ubuntu 21.04, it was fine but now it's not working anymore. I have Quadro K1100M GPU in laptop.
1 Answer
I solved it by the following process.
sudo apt purge cuda*
sudo apt purge nvidia*
sudo apt purge libnvidia*
sudo apt autoremoveRemoving all the stuff regarding nvidia is mandatory, otherwise you might face some installation issues.
I found that my supported nvidia driver is nvidia-driver-418 from nvidia driver downloads, later I found that ubuntu nvidia-driver-418 has been moved to nvidia-driver-470 (470.82.01), I don't know the theory behind this.
Then from NVIDIA CUDA Toolkit Release Notes I got that CUDA 11.4 Update 3 ships with nvidia-driver-470 (470.82.01) and it's done. Then simply I followed the process from official documentation for local deb (Ubuntu 21.10 isn't available there but 20.04 works), and it worked.
In my case it was like:
wget
sudo mv cuda-ubuntu2004.pin /etc/apt/preferences.d/cuda-repository-pin-600
wget
sudo dpkg -i cuda-repo-ubuntu2004-11-4-local_11.4.3-470.82.01-1_amd64.deb
sudo apt-key add /var/cuda-repo-ubuntu2004-11-4-local/7fa2af80.pub
sudo apt-get update
sudo apt-get -y install cuda
