NIntegrate problems

Sorry, I am boxed in by Mathematica again, every exit being blocked and can’t find any answers on the web. This usually happens once the code is lengthy so it…

NVIDIA driver not loaded on Ubuntu 18.04

I installed nvidia driver by: $ sudo add-apt-repository ppa:graphics-drivers/ppa $ sudo apt-get install nvidia-390 But it looks like the driver isn’t running properly: $ nvidia-smi NVIDIA-SMI has failed because it…