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I've come across very strange problem trying to connect to my home wifi, which is provided by a T-Mobile Alcatel router, from Ubuntu (20.04) on my Dell XPS 13 9370. Every time I try to connect it fails with the message:

Authorization supplicant timed out

Removing the password protection from the network and clearing the saved network info had no effect.

Most notably:

  • I've no issues connecting to any other WiFi-network.
  • All other devices, aside from my laptop, can connect to the router just fine. (among them several linux devices)
  • The problem has persisted even on a fresh install of Kubuntu 20.04
  • None of the obvious quick-fixes, like restarting the network adapter, had any effect. (Though I'm more than happy to try anything again if you have a suggestion)

The info of the wireless debugging as mentioned in an answer to this question.

Any ideas for solutions or suggestions on how to more adequately debug the problem would be greatly appreciated!

someone_000
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  • Look at the logs: sudo journalctl -b 0 /usr/sbin/NetworkManager – waltinator Jul 16 '20 at 18:40
  • Having the same problem here using Dell Latitude E7470 with an Alcatel router (Orange 4G network) in Egypt. All other devices(laptops/smart phones and tablets) are perfectly working including a smart TV. I’ve opened the router settings and by looking at the connected devices field i can see it increasing and decreasing from 6 back to 7 and then error is displayed on the laptop. My take on this, that is is somehow related to a specific network protocol/adapters in Dell laptops which is not compatible with Alcatel routers – Yehia Ezzat Sep 02 '20 at 18:47

1 Answers1

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i faced the same problem, on Pop!_os with my Alcatel router (Orange 4G network) by installing iwd

install iwd

sudo apt-get update && sudo apt-get install iwd

then ensure connection to the service by

sudo systemctl enable iwd.service

start the service

sudo systemctl start iwd.service

Next open /etc/NetworkManager/NetworkManager.conf and add

wifi.backend=iwd

to the [DEVICES] section.

References to this question here Problem with connection to wifi on Ubuntu 20.04

AhmedNour
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