Fix Intermittent Wifi in Ubuntu 14.04 on 2013 Macbook Pro (Broadcom 4331)

UPDATE (5/7/2014): It turns out I continued to have connectivity issues, which were exacerbated when I downloaded a large file. After 60mb, it seemed to kill WiFi. I tried reloading the Broadcom drivers and various other things, but it wouldn’t work. Changing to the proprietary drivers under Software & Sources->Additional Drivers fixed the issue for me:

Screenshot from 2014-05-07 14:51:37

My Macbook Pro 13″ was having connectivity issues after the upgrade to 14.04 LTS. It would stay connected to the hotspot, but would not transmit data.

Issuing “$ sudo service network-manager restart” would temporarily resolve the issue, but it was getting annoying doing that every 10 minutes or so.

The fix:

  1. Run these commands:
  2. # modprobe -r b43 && modprobe b43
  3. The reboot.

WiFi should stay connected now.

3 thoughts on “Fix Intermittent Wifi in Ubuntu 14.04 on 2013 Macbook Pro (Broadcom 4331)

  1. The command:modprobe -r b43 && modprobe b43
    gives an error:
    # span style=”color: #000000;”>modprobe -r b43 && modprobe b43</span
    bash: syntax error near unexpected token `;&'

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