LL7.6 on Macbook (Mid 2009) with WiFi module BCM4322

[stevef]

Is this a known issue and if so, could you please list the steps (in detail) I need to take to rectify the issue.

On the hardware db, there are 400 odd reports of systems using bcm4322, of which 180 odd are macbooks with more than a dozen systems reportedly using series 7. Unless someone with the same hardware has had the same issue and reads your post and is prepared to help, it is unlikely that you'll get a detailed list of steps.

Debugging an issue like this over a forum is likely to be time consuming and without any guarantee of a fix, but if you are prepared to engage we can try. Key will be finding the what caused the problem.
Do you have a System Restore point taken before the update/upgrade ?

Otherwise, this guide is perhaps closer to what you are looking for and may help. It covers the kind of questions we'd need to ask.
https://askubuntu.com/questions/55868/in...ss-drivers

Although the question is old, the answer appears to have been kept updated and might be worth a read.