colored stripes instead of image on video for me on Linux /Firefox web sessions

Hello, I am new to Zoom and whether I participate as a host of as a participant, my video pane on Linux 6.1.9 and Firefox 109.0 does not show my image (neither to me nor to others) but instead colored vertical stripes (see attached image).

Other participants are fine so this has to do with the graphics config on my host.  I turned off acceleration because I do not have a discrete graphics card. I rely on CPU only. Everything else in my zoom session seems normal (AFAICT): sound, controls, etc.

I think I need help with troubleshooting, because I don't know where to start.  Thank you.