I am using ubuntu 20.04, and my problem is that the network connection sometimes terminate. I want to reconnect to the same network, but when I click the wifi icon at the header bar and choose "Select Network", it only permit me to change to another network, otherwise the button "connect" is gray. So I have to open gnome-control-center to reconnect the network, but gnome-control-center is really slow to start, it takes 3+ seconds to open. So I wonder how I can simply reconnect to the present wifi without opening it.
My current wifi connection is WPA2 and require both a username and a password, which has already be save in gnome-control-center. Reconnecting by either terminal or GUI is ok, but I do not want sudo, because entering password is time costly.
By the way, can anyone explain why gnome-control-center startup is that slow?
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