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Network settings don't work - unlock button doesn't react

PostPosted: 07 Apr 2015, 18:31
by puhuux
I'm trying to enable an external USB wireless adapter, but Network Settings are locked, and if to click on lock icon to unlock them, nothing happens. Can somebody say - what's up? The lock button supposed to open window where I can insert my password to unlock and change settings, as it used to be. Or may-be there is another way to disable internal wifi adapter and enable usb adapter?