Error log:
I have a dual boot desktop system Window and Ubuntu 20.04. I deleted Ubuntu 18.04 which was working fine and installed (not upgraded) to Ubuntu 20.04. Everything was fine, but later I got several problems. I lose the LAN network connect every night. when I go to the office I close the network connection and start it and it works fine for several hours and something still works for days. In the beginning the network always showed a question mark on it. Now it does not show anything and internet connection drops.
I installed caffeine so that the PC does not go to sleep and I removed the screen server in the power section.
I am not sure if anybody has this problem with Ubuntu 20.04.
I also have a problem with TeamViewer with Ubuntu. Every time I switch off the display I can not longer use TeamViewer.
sudo journalctl -b 0 -u NetworkManager
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