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Screenshot

Hello. I am trying to use elementary on my macbook pro, but i won't display wifi unless i plug in usb wifi dongle. So, the drivers are missing i suppose. I had this issue before and it was solved with a system update. Now how can i fix and enjoy elementary os?

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Following steps fixes the problem.

  • Removing bcmwl-kernel-source package, then reboot:

    sudo apt-get remove --purge bcmwl-kernel-source
    sudo reboot
    
  • Installing new broadcom firmware:

    sudo apt-get install firmware-b43-installer
    
  • Reload package.

    sudo modprobe -r b43
    sudo modprobe b43
    

Source: http://www.linuxlinx.com/2016/08/fix-no-wireless-on-macbook-after.html

  • Following the above steps works for me on a macbook pro 2009. – chuck Sep 7 '18 at 1:52
  • these instructions still work on a 2009 MBP in Elementary OS 5.0 as of May 2019 – masukomi May 9 at 3:42

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