I have been using Mathematica 12 on Ubuntu 20.04 for a while now, and everything has been fine.
However, now when I try and open it, it freezes on 'Initializing kernels'. I have also tried running 'mathematica' and 'math' and 'WolframKernel' from the terminal, but they all just freeze. Does anyone have any suggestions?
Edit: I have tried installing the most recent version, but I have the same issue, except it gets to 'Initializing internal preferences', and then my laptop starts whirring lots, and eventually freezes.