A fix for no auto-wireless connection on wake from sleep Laptop Macs

I found this on one of the posts here. This solves a bigger issue for me - no automatic wireless connection on startup. Put this in the terminal:

• /System/Library/PrivateFrameworks/Apple80211.framework/Resources/airport -a

And voila - solved. I never had a problem with wireless and waking, but I'd imagine this would cover that boat too.

Based on the hint above, I found a fix that might be easier for many folks since it does not require the user to directly edit an xml preferences file:

1. In the Network references pane, delete the Airport connection that does not like to reconnect.
2. Click Apply and Quit the System Prefs app.
3. Put the computer to sleep.
4. Wake the computer.
5. Go back in to the Network pref pane and re-add the Airport connection. Do not try to connect to the network at this time.
6. Click Apply and Quit the System Prefs app.
7. Use the Airport menubar app to connect to your network.
8. Verify connectivity
9. Put the computer to sleep.
10. Wake the computer.
11. Verify connectivity

• This is what worked for me (Yosemite) 1) Open “System Preferences.” 2) Click “Network.” 3) In the left column, bottom row, click the gear icon with the down arrow. 4) Select “Set Service Order.”

  5) Drag “WiFi” to the top of the list.

References

http://hints.macworld.com/article.php?story=20070206143142824