Wifi stopped working on 5 GHz after reinstall

Ubuntu
1

I am sorry, but I don’t know how to properly post a request. I had filled out the template, but the result exceeded the max size of a posting.

My problem is:

  • Wifi had stopped working for an unknown reason.
    After a re-install following the instructions below of driver for BCM4331 802.11 wifi started working again.
    Although now working on 2 GHz, wifi on 5 GHz was not restored.
    I have the system reports ready on demand.
    Method of wifi recovery successfully used:
    https://itsfoss.com/fix-no-wireless-network-ubuntu/
    Step 1:

The first step is to remove any broadcom drivers already installed on your system. Open a terminal and use the following command:

sudo apt remove broadcom-sta-dkms bcmwl-kernel-source

Step 2: If you are connected to internet via ethernet

If you are connected to internet via LAN/Ethernet cable, you can install different broadcom drivers using this command:

sudo apt install firmware-b43-installer

2

Later, bluetooth also stopped working with the notorious “blueman error”. As of today, both bluetooth and wifi work again normally thanks to a pushed Broadcom update. Thanks to whoever made that contribution to my software.

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