I have been following this thread for awhile and we are creating confusion for every new person that reads this thread. When they go to the last pages, to get the latest info they just see a lot of confusing info. They are seeing alot of suggested fixes, trying them and they dont work, or they do work, but there are so many suggestions that no one knows what to try. So I have a proposal. Lets do this right. Copy and paste this post. If you try one of the suggestions and it works for you, bump up the "success count", if it doesn’t bump up the failure count. Because when multiple people have something working we can have confidence it should work for us.
Problem:
Since upgrading to Mavericks whenever my MacBook goes to sleep (if I leave it idle or if I close the lid) the wifi disconnects and it can take up to a minute to reconnect when it wakes. When searching the web you get the message “Not connected to the internet”
Why it happens:
Wifi and Bluetooth conflict with each other when the computer wakes. If a bluetooth device was paired, and was disconnected while the mac was sleeping, the mac will first look to repair that device. Since the device does not allow the mac to pair, the mac continues to search for it for up to 1 minute and then will timeout and allow the wifi to ocnnect.
How to test it:
Close the lid of your mac to let it sleep, open it and login, does it take 0-5 seconds to connect Wifi (Wifi icon becomes solid black and can surf the web) if so you are good. Else if wifi icon is gray or shows searching and you cannot surf the web for 30s to 1 minute or until you select your wifi network you have the problem.
Potential ways to get around this (Please add to success/fail count as you test! )
1) EASY - Turn off Bluetooth (Top Right corner menu bar Bluetooth Icon > Turn Bluetooth Off, icon will become gray)
Test it works: Turn bluetooth off, close lid, open, and surf web
Disadvantage: Obviously you cannot use bluetooth.
Success Count: 100+
Fail Count: 0
2) MEDIUM - Delete the plist and reboot your mac (Open finder, select ‘Go’ at top menu bar, ‘Go to folder’ > Library/Preferences, delete this folder if you have it: SystemConfiguration (if you have it) and this file: com.apple.systempreferences.plist(More info https://discussions.apple.com/docs/DOC-4301)
Test it works: Turn Bluetooth on, close lid, open, and surf web
Disadvantage: Issue returns if after doing this fix, you disconnect a Bluetooth device while the mac is sleeping.
Success Count: 1
Fail Count: 0
2) EASY – If you have unpaired a Bluetooth device while mac was sleeping, repair that device. Unpair it while mac is awake.
Test it works: Turn Bluetooth on, close lid, open, and surf web
Disadvantage: You must have the device available of course
Success Count: 1
Fail Count: 0
3) EASY - Allow Bluetooth devices to wake this computer (Top Right corner menu bar Bluetooth Icon) > Open Bluetooth Preferences > Advanced > Uncheck Bluetooth devices to wake this computer
Test it works: Turn Bluetooth on, close lid, open, and surf web
Disadvantage:
Success Count: 0
Fail Count: 1
4) EASY - Disconnect all bluetooth devices (Top Right corner menu bar Bluetooth Icon) > Open Bluetooth Preferences > Remove all connected devices
Test it works: Turn Bluetooth on, close lid, open, and surf web
Disadvantage:
Success Count: 0
Fail Count: 1