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I am running Xubuntu 20.04 on a Lenovo ThinkPad T420 on an SSD with 32GB of memory. I have changed nothing, just my daily checks for updates, for which there were a few. However, I have not made any configuration changes myself.

The following window keeps popping up:

enter image description here

Up until this point, I have had no issues with the WiFi, or anything really, at all.

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  • Look at the logs! sudo journalctl -b 0 -u NetworkManager.
    – waltinator
    Dec 14, 2020 at 17:01
  • I see a lot of "warn" messages. Most of them "connection disconnected (reason 16)" some of them "ifupdown: interfaces file /etc/network/interfaces doesn't exist" and "Error: failed to open /run/network/ifstate"
    – Brian
    Dec 14, 2020 at 17:06
  • See https://aboutcher.co.uk/2012/07/linux-wifi-deauthenticated-reason-codes/ for "error 16".
    – waltinator
    Dec 15, 2020 at 23:38
  • 16 - Group Key Handshake timeout. Information element in 4-Way Handshake different from (Re)Association Well, that was the least helpful thing ever.
    – Brian
    Dec 16, 2020 at 17:43

1 Answer 1

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UPDATE: Some software update I performed in the last day or two has, seemingly, fixed my issue. I'm not sure which update it was, so I guess my advice for anybody facing this is to keep up on your updates.

 

Here are my updates from the last two days:

2020-12-14:

  • linux-modules-5.4.0-58-generic:amd64 (5.4.0-58.64, automatic)
  • linux-image-5.4.0-58-generic:amd64 (5.4.0-58.64, automatic)
  • linux-headers-5.4.0-58:amd64 (5.4.0-58.64, automatic)
  • linux-headers-5.4.0-58-generic:amd64 (5.4.0-58.64, automatic)
  • linux-modules-extra-5.4.0-58-generic:amd64 (5.4.0-58.64, automatic)
  • linux-headers-generic:amd64 (5.4.0.56.59, 5.4.0.58.61)
  • linux-image-generic:amd64 (5.4.0.56.59, 5.4.0.58.61)
  • linux-generic:amd64 (5.4.0.56.59, 5.4.0.58.61)
  • linux-libc-dev:amd64 (5.4.0-56.62, 5.4.0-58.64)
  • linux-modules-nvidia-390-5.4.0-58-generic:amd64 (5.4.0-58.64, automatic)
  • linux-modules-nvidia-390-generic-hwe-20.04:amd64 (5.4.0-56.62, 5.4.0-58.64)

My Guess Is It Was Something In This Update 2020-12-15:

  • libmagick++-6.q16-8:amd64 (8:6.9.10.23+dfsg-2.1ubuntu11.1, 8:6.9.10.23+dfsg-2.1ubuntu11.2)
  • libimage-magick-perl:amd64 (8:6.9.10.23+dfsg-2.1ubuntu11.1, 8:6.9.10.23+dfsg-2.1ubuntu11.2)
  • whoopsie:amd64 (0.2.69ubuntu0.1, 0.2.69ubuntu0.2)
  • libmagickcore-6.q16-6-extra:amd64 (8:6.9.10.23+dfsg-2.1ubuntu11.1, 8:6.9.10.23+dfsg-2.1ubuntu11.2)
  • libimage-magick-q16-perl:amd64 (8:6.9.10.23+dfsg-2.1ubuntu11.1, 8:6.9.10.23+dfsg-2.1ubuntu11.2)
  • imagemagick:amd64 (8:6.9.10.23+dfsg-2.1ubuntu11.1, 8:6.9.10.23+dfsg-2.1ubuntu11.2)
  • gnome-desktop3-data:amd64 (3.36.3.1-0ubuntu1, 3.36.8-0ubuntu1)
  • libmagickwand-6.q16-6:amd64 (8:6.9.10.23+dfsg-2.1ubuntu11.1, 8:6.9.10.23+dfsg-2.1ubuntu11.2)
  • libwhoopsie0:amd64 (0.2.69ubuntu0.1, 0.2.69ubuntu0.2)
  • apport:amd64 (2.20.11-0ubuntu27.13, 2.20.11-0ubuntu27.14)
  • libinput-bin:amd64 (1.15.5-1ubuntu0.1, 1.15.5-1ubuntu0.2)
  • imagemagick-6.q16:amd64 (8:6.9.10.23+dfsg-2.1ubuntu11.1, 8:6.9.10.23+dfsg-2.1ubuntu11.2)
  • libgnome-desktop-3-19:amd64 (3.36.3.1-0ubuntu1, 3.36.8-0ubuntu1)
  • python3-apport:amd64 (2.20.11-0ubuntu27.13, 2.20.11-0ubuntu27.14)
  • libmagickcore-6.q16-6:amd64 (8:6.9.10.23+dfsg-2.1ubuntu11.1, 8:6.9.10.23+dfsg-2.1ubuntu11.2)
  • apport-gtk:amd64 (2.20.11-0ubuntu27.13, 2.20.11-0ubuntu27.14)
  • python3-problem-report:amd64 (2.20.11-0ubuntu27.13, 2.20.11-0ubuntu27.14)
  • libinput10:amd64 (1.15.5-1ubuntu0.1, 1.15.5-1ubuntu0.2)
  • imagemagick-6-common:amd64 (8:6.9.10.23+dfsg-2.1ubuntu11.1, 8:6.9.10.23+dfsg-2.1ubuntu11.2)
  • libevdev2:amd64 (1.9.0+dfsg-1, 1.9.0+dfsg-1ubuntu0.1)

 

Good luck.

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