FurMark is a free GPU stress test sofware for Linux and Windows. It supports OpenGL and Vulkan graphics benchmark with online scores. It comes with improved command line support and is built with GeeXLab support.
Download FurMark [Linux, Windows]
Install FurMark on Ubuntu
FurMark is available as a flatpak package file from the remote flathub. First install flatpak and flathub on your system and restart it after the installation.
Install flatpak and flathub on Ubuntu
Now open the terminal ap (ctrl+alt+t) and run below FurMark flatpak install command. It will install the latest FurMark on your system.
flatpak install flathub com.geeks3d.furmark
And open FurMark using below command.
flatpak run com.geeks3d.furmark
You can also uninstall FurMark using below commands.
flatpak uninstall com.geeks3d.furmark
[OR]
sudo flatpak uninstall com.geeks3d.furmark