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I'm using Ubuntu 20.04.2. I can see WiFi networks available around, but when trying to login open or locked networks, the answer is:

Activation of network connection failed.

I tried sudo service network-manager restart - no result. And switch off power management for WiFi - no changes.
Any idea what can be done to fix the issue?

iwconfig answer:

lo no wireless extensions.
enp19s0 no wireless extensions.

wlp18s0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=14 dBm
Retry short limit:7 RTS thr:off Fragment thr:off Power Management:off

Update 6.09.21 Downloaded ISO Ubuntu to virtual drive, checked the the “CDrom with [your distro name and version] box” but no additional drivers was found.

sensor
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  • Try using these commands to restart network manager https://tecadmin.net/restart-network-on-ubuntu-20-04/. I'm not sure if you actually restarted the service –  Aug 30 '21 at 00:13
  • I just tried your way and no changes. Any idea how I can test the problem? – sensor Aug 30 '21 at 20:42
  • I just found this article https://www.maketecheasier.com/fix-wi-fi-not-working-ubuntu/ and one other: there are additional links which may help test the issue : https://itsfoss.com/fix-no-wireless-network-ubuntu/. https://appuals.com/activation-of-network-connection-failed-in-linux/ See what you can do with these –  Aug 30 '21 at 22:48
  • also refer here for more troubleshooting tips on your pc: https://askubuntu.com/questions/1338270/connection-failed-activation-of-network-connection-failed –  Aug 30 '21 at 23:02
  • If you still can't fix this, post the output from this link along with all the steps you have taken. https://askubuntu.com/questions/425155/my-wireless-wifi-connection-does-not-work-what-information-is-needed-to-diagnos?noredirect=1&lq=1 –  Aug 31 '21 at 00:42
  • Be sure to hit the edit button beneath the question and post all updates there. The comments section is designed only for brief text and links. –  Aug 31 '21 at 01:07

1 Answers1

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it's come out it was very specific problem - so, maybe not much help for others. I replaced the wifi module in the laptop and strait away I could login to all networks

sensor
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