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I recently installed xubuntu and I tried to create a wifi hotspot using hostapd, but was in vain. After that I started having issues connecting to wireless networks. My wired network works fine. But when I look for any wifi networks, it ends up showing Wi-Fi Networks disconnected even though there are many wifi-networks. Here is a screen-shot of how it was looking:.

EDIT:

Here is how my /etc/network/interfaces looks like:

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

And here is my /etc/NetworkManager/NetworkManager.conf:

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=true

And rfkill list shows the following:

0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no

Please Help. Thank you.

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