My target is to create a Wifi hotspot using a wifi USB adapter in my computer that is already wireless connected.
I'm using Ubuntu 14.04 LTS / 64 bit The USB adapter is a: TP-Link TL-WN823N
This post describes exactly how to do this: How to setup an Access Point mode Wi-Fi Hotspot?
In short there are 4 steps:
1.) Create the initial hotspot entry by: System Settings > Network > Use as hotspot
2.) Edit the created hotspot using GUI Networking > Edit Connections Add SSID, WPA2, password etc.
3.) Since the ap mode cannot be set in the GUI yet is must be done with the command line.
'sudo -i gedit /etc/NetworkManager/system-connections/Hotspot'
4.) Start the now correctly defined hotspot
This is the point where I got stuck and reason for asking this question. The previous mentioned post says:
"Click on 'Create New Wi-Fi Network' from Network Indicator menu."
There is a field "connection" that allows you to create a new connection of select an existing one. The intention is to select the hotspot that is created before.
However, for me it is only possible to create a new hotspot because the field "connection" is missing. See picture.
What I can do is select one of both adapters. That is good because I want the USB wifi and not the laptop adapter. If I type the new network name in the field "network name" a NEW network is created that shows up in '/etc/NetworkManager/system-connections/'
So that doesn't help. However I noticed that it was possible to use: "connect to a hidden wifi network". The created network is in the list and is selectable. Starting the wifi gives the error: "Failed to activate the connection"."AP mode is not supported by this device"
Any help would be appreciated. I want to stick to the basic functionality of Ubuntu as much as possible. I do not want to install ap-hotspot. Yes, it might be working but is not maintained any longer.