by sgosnell » 2020-12-12 18:54
Non-free means the source code to the software is not freely available, it's proprietary. You should have firmware-misc-nonfree installed. If it isn't, install it. If you install debian-live-10.7.0-i386-cinnamon+nonfree.iso, it will remove what you have now. It might work.
Take my advice, I'm not using it.