I came across an interesting article on how to convert your Ubuntu Notebook into a WiFi Hotspot so that you can connect other devices to your Ubuntu Notebook for sharing the internet connectivity.
You don’t need to install any fancy software, in fact the functionality is built into Network Manager itself. Its very easy and I tried it and it works well.
Here is the article if you need.
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as this post said, all my wifi devices cant even connect to the new network which created by network manager
I want to try this method
no, this is not what you think : this is a feature allowing to connect an access point already existing, not a way to create an access point from your PC !