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Mountain Lion no Wifi after wake from sleep

Hey guys,

I have the following problem:

after I wake my 17" MacBook Pro 8,3 (early 2011) from sleep by opening the lid, it starts searching for a WiFi network to join. It will just keep searching and searching, without ever finding anything. When I try to click on the WiFi icon in the menubar I get the beachball, also the System Preferences are affected by this crash - I can't go to "Network", it also beachballs. The only way out is a restart.

To prevent this from happening I can disable WiFi before putting my mac to sleep, but that's quite inconvenient. I have disabled all Auto Proxies, tried to delete the known networks from both the Network pane and the Keychain.

😟

MacBook Pro (17-inch Early 2011), OS X Mountain Lion

Posted on Jul 27, 2012 11:06 PM

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ilovecode Author

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Posted on Jul 28, 2012 1:22 AM

Ok, I finally fixed this myself.

Go to "System Preferences > Network" and select the WiFi-Service from the list on the left. Select "Options" from the bottom right of the right pane. In this window, delete all the known Networks and hit OK. Then go ahead and delete the WiFi device. Create a new WiFi device and you're done.

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421 replies

rgotty

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Aug 18, 2013 8:29 AM in response to ilovecode

I have a 13" mid-2012 MBA with factory-installed OSX with all updates applied, running 10.8.4

I too was experiencing the problem where the MBA would not reconnect to my home WiFi network after sleep. But through careful observation I noticed that the problem not only occurred when waking from sleep but also when I turned off the WiFi network and then turned it back on. In this latter case, when I turned on the WiFi network it would not find my preferred home network. I would have to wait a few seconds for it to grey-out the WiFi icon in the menu bar. Then, I would click on it an wait for it to find all networks, including my home network. I then had to select my home network but I did not have to re-enter the network password.

Like others, I did the disk verification and repaired permsissions - it did not resolve the issue. I also deleted the entry in my keychain for my home network's password - that too did not resolve the issue.

Finally, I removed my home network entry from the WiFi Preferred Network list. I then turned off WiFi networks and then turned it back on. When it came back on, I then selected my home network from the list, entered my network password, and checked the Preferred Network checkbox. This resolved my issue - I am able to close my laptop lid, wait a few minutes, and open the lid and my MBA automatically connects to my home network.

-Rod

Mountain Lion no Wifi after wake from sleep