Presentation problems with Ubuntu, think I might have found the problem?

I have no idea why or what happen, but this is likely the 4 or 5th time my Ubuntu machine has become unstable while presenting live on zoom.

Tonight I gave a presentation for the Mozilla Festival about adaptive podcasting. I did some tests because I wanted to see if I could switch the audio from my headset mic to the Android phone running the app. Things were not working, so I decided to use the audio captures instead. Everything was fine, presentation in Google Chrome using google slides and Miro in Firefox for the workshop portion later. Zoom for video sharing.

Everything was smooth then I started Chrome in presentation mode but remember I need to turn on auto-generated subtitles. I switch to Zoom on my second screen try and turn it on but everything refreshes and freezes except my mouse cursor. The camera light is still on and sound is working (both mic and audio). I am forced to run the whole hour long workshop with no access to my slides, zoom or anything else. So I freestyle it.

I remembered a few times before something similar things happening while giving a presentation at Agile Manchester, UCD gathering, Immersive Arts Lab 8 and last week at the publicspaces conference. However the difference has been the laptop had paused for a short while (couple of minutes) before returning to normal state. This time I ended up rebooting the whole laptop.

Thinking about the circumstances of the other times, I suspected it might be Zoom but then its happened with Hopin too. It can’t be the laptop because I now I have a brand new laptop and although they are both Ubuntu the first three were Ubuntu 18.04.3 LTS. While I was running Ubuntu 20.4.2 LTS for the publicspaces conference and Mozilla festival. This leads me to the other common element which is Google chrome, which I use because its google slides (I tend to only sign into my google account with chrome).

Then I found problems with Chrome and fullscreen.

Even if its not quite right, I’ll be testing running Google slides from Firefox instead.

One upside of todays presentation is the amazing response I got from people on the call who really enjoyed the pure storytelling. Although I am glad for my co-host, having shared the slides and miro whiteboard right at the start.

Big thanks to everyone and the lovely words people have shared with me.