Once I login to gnome shell using lightdm then everything works perfectly Teamviewer wise. If I change to lightdm as my display manager (sudo apt-get install lightdm)Then configure lightdm as the display manager and reboot. If I use GDM3 for my display manager - my Teamviewer all the sudden will not connect to the teamviewer servers to allow me to see my clients - and I if I login to a machine that is using Ubuntu 20.04 and that machine is using GDM3 then I get a black screen when connecting to Teamviewer. I think have narrowed the problem down to GDM3. (but with a blank screen so you cant actually take control.

(this is where I can see my client computers in the program) Also the same computer that cant connect to computers and contacts is allowing other computers to connect to it. Yes i know Teamviewer 12 is older but its bought and paid for, I have Teamviewer 12 running on about 400 clients and have no issues using it for daily help for my clients.Īll of the sudden Teamviewer on multiple boxes that I personally use 20.04 on are having issues connecting to the computers and contacts module of Teamviewer. I ran both beta and final with zero issues using Teamviewer 12.

Granted I am not expert but, I have been running 20.04 beta since it came out and then final 20.04. I think there is an 'issue' with GDM3 in Ubuntu 20.04 when trying to use Teamviewer 12. I am not an expert in anyway shape or form.

Teamviewer ubuntu black screen