Okay I see… You have python2 default also even after the upgrade.
On Ubuntu 20.04 the default should be a python3 version.
I cut and paste from here and I had to fix quotes. I have torch 1.11.0 and it does work, so I will have to try 1.12 or see if you have a non CUDA compiled version in Anaconda:
$ python -c ‘import torch ; print("\nPytorch version: ",torch.version) ; print(torch._C._cuda_getCompiledVersion(), “cuda compiled version”)’
Pytorch version: 1.11.0
11060 cuda compiled version
So I would reinstall Lambda stack (I think that was in another thread I just posted that to).
You can email also, since I cannot attach a text file here. (Also it may be easier to do a google meets to work through this).
And we can get python3 set default.
That will show you which python versions are default, setup by links.
On Ubuntu it was using the /etc/alternatives to setup which was installed and set to default.
So we should first check what you have default with:
$ ls -l /usr/bin/python*
But a reinstall of Lambda Stack I would recommend.