MacOS – Have to reconnect to WiFi every time computer goes to sleep

macbook promacoswifi

I recently purchased a new MacBook Air (2011) with Lion preinstalled. There is this persistent and incredibly annoying problem that is occurring with the WiFi. Every time I close the lid or let the computer go to sleep, and then begin reusing it, the popup comes up asking me to select a network to join. IT remembers the password, it just wont connect me until I chose a network. This happens every time. Things I've tried:

  1. Restarting computer
  2. Turning WiFi on and then off
  3. Changing encryption of the wireless (even though it happens to all wireless networks)

Has anyone else discovered this problem? Has anyone found a fix for it? Or is it just a bug with Lion that hasn't been fixed yet?

Best Answer

I had the same issue with my 2011 MacBook Air with Lion, and I think it had to do with having changed security preferences on my preferred wireless network. I went to System Preferences > Network > Advanced > WiFi and deleted all existing Preferred Networks, then re-added them. So far, so good. It joins my preferred network automatically after awakening from sleep mode.

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