My video monitor is plugged into the HDMI port of my ASUS motherboard. Yet Xorg, gnome, Firefox, and other video processes are running on my RTX2080. I want to reserve as much of the GPU memory as possible for deep learning processes. How can I prevent video processes from utilizing GPU resources?
remove the xorg configuration that is recognizing your RTX2080
the exact methodology here will depend on the exact linux distro and version you are using. Older versions will have an xorg.conf file that with suitable editing will remove any graphical usage of the GPU. This topic is covered extensively on the internet and on our linux driver forums. Also, this may be of interest.
If you have detailed questions about it I suggest asking those on our linux driver forums.