- If you have NVIDIA video card and also Intel integrated video on your laptop you may want to switch between them and you can use Prime Indicator - Intel/NVIDIA GPU Switch to do that.
You can also use terminal commands to switch graphics card. For example, this command will switch to Intel graphics card.
sudo prime-select intel
To switch to Nvidia card:
sudo prime-select nvidia
To check which card is being used right now, run this command:
prime-select query
source: How To Switch Between Intel and Nvidia Graphics Card on Ubuntu
If you have any problems with an external monitor:
Open this file in your favorite editor (vim, nano, gedit, etc.).
sudo nano /lib/modprobe.d/nvidia-kms.conf
And comment out the the nvidia-drm modeset option.
# This file was generated by nvidia-prime
# Set value to 0 to disable modesetting
# options nvidia-drm modeset=1
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