安装elmer 20.04 ubuntu

There is a Linux version at launchpad that can be used on Ubuntu and Debian based systems

sudo apt-add-repository ppa:elmer-csc-ubuntu/elmer-csc-ppa

sudo apt-get update

sudo apt-get install elmerfem-csc

You can use the Ubuntu based virtual machines that provide the best possible user experience for Elmer.

Finally:

export DISPLAY=:0

or

export QT_QPA_PLATFORM=offscreen   # ps: server without screen