The question says it all. I have ubuntu running on a macbook pro 8.3. It connects but the signal is very weak. When I boot using the Mac, the wireless is very fast and reliable. The relevant output nm-tool is

Type: 802.11 WiFi Driver: b43 State:
connected Default: yes HW Address:


Wireless Properties WEP Encryption: yes WPA Encryption: yes WPA2 Encryption: yes

Wireless Access Points wifi-nu: Infra, 00:24:6C:81:14:00, Freq 2412 MHz, Rate 54 Mb/s, Strength 40 WPA2 Enterprise Milk Digital Admin: Infra, 0C:85:25:68:BB:D3, Freq 2437 MHz, Rate 54 Mb/s, Strength 29 WPA WPA2 Legs Admin: Infra, 0C:85:25:68:BB:D5, Freq 2437 MHz, Rate 54 Mb/s, Strength 32 WPA WPA2

It keeps droping and is significantly slower. Also, I installed the driver as recommended by the ubuntu macbook support

Please help


The propriary drive is known to have issues on macs with power saving features. Try turing them off.

sudo iwconfig eth1 power off

The interface might be different. Also try the open source driver a lot has changed in Ubuntu 12.

  • I already tried this. I even added it into a file in /etc/pm/power.d/wireless. In any case, where do I get the open source one from? – awm Nov 28 '12 at 20:28
  • I also followed some instruction here , but the signal is still significantly lower than the signal when in mac. – awm Nov 28 '12 at 20:35
  • Just undo the instructions where you blacklisted the module. The open source driver will takeover. It may not work. But it's worth a try. This page has wireless working out of the box in 12.04, though scrolling down the page it says it doesn't. Then there is This bug And This may be of help I have the same chip and the open source (default) driver works quite well. – coteyr Nov 28 '12 at 20:37
  • Don't worry about signal too much. OS X and Linux "measure differently". Worry about speed, and connection. If you get full speed, and constant connection, then your fine. Strength of signal is not measured the same between operating systems. – coteyr Nov 28 '12 at 20:39
  • Just undo the instructions where you blacklisted the module. I am sorry, which one? – awm Nov 28 '12 at 20:48

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