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Thorsten Niehues
Asked: 2019-07-16 23:43:51 +0800 CST

Ubuntu 18.04 Unable to connect to specific / home WIFI / WLAN

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On our home network, I am unable to connect to the wifi in Ubuntu 18.04

How to debug & fix it?

So far I tried:

  • Tripple check that the correct password is used (only numbers)
  • Connection to other WIFI / WLAN networks is possible (so I assume it is not a general driver issue)
  • Verfied the security method
    Router / Fritz!Box 6490 : WPA2 (CCMP)
    On the Ubuntu Laptop it says WPA & WPA2 Personal

System Info

  • OS : Ubuntu 18.04.2 LTS
  • WIFI Hardware: Wireless 8265 / 8275
  • WIFI Driver: driverversion=4.15.0-54-generic
wireless 18.04

1 Answers

  1. So I was about to try various different solutions....

    Before I did begin I saved my config - since I did not understand the solutions completely - and time is precious .. so:

    cd /etc/
sudo git init .
sudo git add .
sudo git commit -a -m 'initial commit before experiments'

    I checked this answer https://askubuntu.com/a/970718/230083 but my config matches already the solution.

    Next I used this thread https://ubuntuforums.org/showthread.php?t=2363514

    After the seps: 

    sudo apt-get update
sudo apt-get dist-upgrde
sudo apt-get autoremove
sudo apt-get autoclean

    I did again a git status which showed only little changes:

    modified:   fonts/conf.avail/64-language-selector-prefer.conf
modified:   fonts/conf.avail/69-language-selector-zh-hk.conf
modified:   ld.so.cache

    Anyway I committet and tried connecting to the network again - and it worked !!

    So I'm not sure how this got it fixed since I install updates whenever they appear in the tool "Software Update"

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