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I just installed Lubuntu 17.04. It did not recognise the WiFi card I had in the MB, so I took a TP-Link WN722N USB stick. The system immediately recognised the USB WiFi stick and offered networks to connect to. But at any attempt to connect, the system just gives up after a while without explanation. I do not have any special settings, just regular AES password protection. What can I do other than search for a different distribution?

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    Have you retried restarting the network-manager by sudo service network-manager restart?
    – NerdOfCode
    Jul 25 '17 at 17:22
  • It depends on which revision of wn722n it is. Searching for a different distibution won't help.They all use the same kernel. You can search for solutions regaring your built-in wireless adapter and the dongle. You may need some drivers or settings.
    – Pilot6
    Jul 25 '17 at 17:24
  • As @Pilot6 was getting at, you may need to download and reinstall your specific wifi adapter drivers. If you do choose to do this, you can use modprobe.
    – NerdOfCode
    Jul 25 '17 at 18:51
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    Please try this first: askubuntu.com/questions/902992/…
    – chili555
    Jul 25 '17 at 20:34
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I tried opening

sudo leafpad /etc/NetworkManager/NetworkManager.conf

added the line

[device] wifi.scan-rand-mac-address=no

then I restarted the service

sudo service network-manager restart

...and I got connected! The browser still has a problem connecting to the internet, but I guess that is a different issue. Thanks for the suggestions.

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