Cannot downgrade from Cuda Toolkit 11.3

Accelerated Computing CUDA CUDA Setup and Installation
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I have first installed Cuda Toolkit 11.3. Sadly Pytorch does not support it yet, so now I want to install cuda toolkit 11.1
I have installed 11.3 via .deb, on Ubuntu 20.04

For uninstallation I have followed
https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#removing-cuda-tk-and-driver

For installing 11.1 I followed https://developer.nvidia.com/cuda-11.1.0-download-archive?target_os=Linux&target_arch=x86_64&target_distro=Ubuntu&target_version=2004&target_type=deblocal However, apt still only gives me the opportunity to install 11.3.

Please give me advice how I can get fully rid of 11.3 and install 11.1

Thanks!

1 Like
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Hi, there.
Your steps are correct except when installing, you need to explicitly give the version number.
check this for further details software installation - How to install specific version of some package? - Ask Ubuntu

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I looked at the documentation and compared with the guide I wrote for Cuda 9.2 here: Installing CUDA Toolkit 9.2 on Ubuntu 16.04: Fresh Install, Install by Removing Older Version, Install and Retain Old Version | Amikelive | Technology Blog

They are still pretty similar. If you want to downgrade, you need to check if the deb packages for 11.3 are still installed. The command dkpg -l | grep cuda should be handy to help you figure out which packages that haven’t been removed.