Me, too. GUI tool not working. Apply changes button greyed out. Jammy, 22.04. LXQt Desktop.
Resolution is to install via command line. Find your hardware with proprietary drivers, "sudo ubuntu-drivers list". In my case, bcmwl-kernel-source. Install with, sudo apt install bcmwl-kernel-source
Me, too. GUI tool not working. Apply changes button greyed out. Jammy, 22.04. LXQt Desktop.
Resolution is to install via command line. source.
Find your hardware with proprietary drivers, "sudo ubuntu-drivers list".
In my case, bcmwl-kernel-
Install with, sudo apt install bcmwl-kernel-source