I found a similar issue on an older version , but the steps below fixed my issue. the gnome environment the now 100%.
I hope this helps someone else as well.
If you wish for Network Manager to control networking, rather than netplan, remove the existing netplan file:
sudo rm /etc/netplan/*.yaml
Create a new file:
sudo nano /etc/netplan/01-network-manager-all.yaml
Add the following:
# Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
Netplan is very specific about spacing, indentation, etc. Please proofread carefully twice. Save and exit nano.
After making these changes, do:
sudo netplan generate
sudo netplan apply
Then reboot
sudo reboot now
Gnome WiFi working
Thanx to the original post
Ubuntu desktop GNOME "no Internet connection" on 19.04