When troubleshooting wireless, it's important that your system is fully updated. Using a wired internet connection, please run:
and reboot if necessary.
sudo apt update
sudo apt dist-upgrade
If the issues persist, it is recommended that you install pastebinit, by running:
This will enable the wireless script to, upon your approval, upload the obtained data to pastebin, creating at the same time a link to it in your terminal, permitting you to paste it to a forum thread.
sudo apt install pastebinit
Once that's done, download and run the wireless info script, which will gather information to help diagnose your system. You can run it using this command:
It will create the file "wireless-info.txt" at the location it is run from, and depending on its size, an additional archive called "wireless-info.tar.gz". If you prefer, you can post the file directly to pastebin yourself. Sensitive information like MAC addresses and WPA/WEP keys are masked automatically.
wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && \
chmod +x wireless-info && \
If you aren't able to connect to the internet with the affected system, including via a wired connection, just navigate to this link and follow the instructions there on how to the run wireless script without an internet connection.
If 'Broadcom' appears in the output next to '', head over to the Broadcom guide.
Please choose a clear and informative title when creating your thread:
- "Atheros ABC123 drops connection, Ubuntu 14.04", is an acceptable thread title, concise and informative.
- "Heeelp, wireless doesn't work", is completely vague and meaningless.
Here is a list of supported wireless cards in the Community wiki - which includes PCI, miniPCI, PCMCIA, built-in, and USB. This list is maintained by the Ubuntu community, so please do think about contributing to it, following these guidelines.
Further details about the script are available here.