Dear Scot,
thanks for your post.
The double check with running Cubit without graphics works properly.
We have installed the NVIDIA proprietary driver version 460.80 (nvidia-driver-460) which seems recommended by Ubuntu 18.04 and it comes with Ubuntu repo. Tomorrow morning I want to test a newer driver.
…and we can run 2020.2 correctly, too. Unfortunately we need the newer version because of sculpt, it´s missing in 2020.2.
If you need further information, please don´t hesitate to contact.
Thank you for your time.
Yours sincerely,
Christian Bänsch