I followed your advices and here the info I gathered: http://paste.ubuntu.com/15406786/

The wifi was working fine until some days ago. Cable internet is ok though. Thanks a lot !

  • 2
    Possible duplicate of Installing Broadcom Wireless Drivers – Jeremy31 Mar 17 '16 at 11:54
  • If you follow the answer, it should eventually lead you to sudo apt-get purge bcmwl-kernel-source and you may have to blacklist ssb and b43 modules although bcmwl-kernel-source sometimes works – Jeremy31 Mar 17 '16 at 11:55

I have same problem recently. I used following steps to solve the issue :

  1. open terminal (use Ctrl+Alt+T or go to dash and type terminal)
  2. sudo apt-get purge bcmwl-kernel-source
  3. sudo apt-get update
  4. sudo update-pciids
  5. sudo apt-get install bcmwl-kernel-source
  6. sudo reboot

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