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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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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.

421 replies

Mar 25, 2013 6:34 AM in response to ChazThePhoenix

Howdy,


A WiFi Mouse? Aren't most wireless mice connected via Bluetooth?


PS: I'm still ok connecting with my direct Ethernet connection coming back after turning off `Wake for network access'. Again, I believe that's a workaround rather than a fix unless Apple directly says it shouldn't work properly with my Gen1 Time Capsule with version 7.6.3 firmware. Note: it DOES take a few seconds to to reconnect and if I immediately try to do something before the re-connect is complete I can still get it to time out and get a default IP and no network connection; another work around.


Also, my MacBook Air has no problem re-connecting but `Wake for network access' was never activated for it. Again, it does take several seconds to reconnect.


Good Luck,

Herb Schulz

Mar 25, 2013 9:19 AM in response to Herbert Schulz

It's amusing. My son, now 34 who who grew up in this digital environment told me: " Dad, I just set my computer to Never Sleep". And I am like; "oh my god! Blasphemy!"


Truth is, it's the Fed that wants us powering down our devices. These regulations were directed at large corporations consuming jillions of megawatts of juice with their I.T. fully powered up doing nothing most of the time. So Apple has to incorporate this "power down" requirement, and it doesn't work well, especially for WiFi. And there's big security issues. (Machines are confused and vulnerable when waking up - sound familiar?)


For some peculiar reason, even if your machine is asleep, it must partially wake every 120 minutes to check out the network, and this throws another wrench in the monkeyworks. (Display doesn't light up, but machine makes some noise). This was causing a problem - with psuedo domain names. They use terminology like "Magic Packets" - it's all rather crazy.


Compromise:


I set my machine to sleep after 2 hrs and 15 minutes hoping I'll get a 4 hour cycle with no problems. I use it every 45 minutes or so anyway. Haven't had any problem so far with dropping WiFi

Apr 8, 2013 1:42 AM in response to Herbert Schulz

Finished downgrading to 10.5.8. Not all that difficult. Kept Old 802.11g airport router. Wha da ya know. No more problems dropping wifi when wake from sleep. Plus can use appleworks a sweet suite that you can no longer run on Lion. So I do believe the problem was overreach with Bonjour sleep proxy protocol - can o worms. Besides, Mac architecture wasn't designed all that well for networking. DOS based systems much better at that


Oh, also went to wired keyboard and mouse, turned off bluetooth. Gonna wait a little longer then re try the keyboard/


Old fashioned I suppose but of the multiple users of my machine, there are now no complaints

May 2, 2013 6:20 PM in response to ninicksicard

Bottom line is Apple screwed up with this networking wake from sleep, IOS, cloud stuff. It's complicated and prone to hacking. So now you have to have latest router technology to have your device work right. Worse is mac books - why - because sleep with open cover is different than sleep with closed.


It's like when you wake from sleep, you're confused and prone to all sorts of shinanegans.

May 3, 2013 9:27 AM in response to vallejogreg

The Macbook is what we use. It was dropping wifi since Lion was installed. ML just made it worse. Monday Apple Store got it to act up finally this time. All test logs showed no problems but when checking the modem by it self when acting up it checked out bad and it was replaced. No issues since. Also it used to act up while in use not only after sleeping.

Here is my latest thread on the issue: https://discussions.apple.com/thread/4990336?answerId=21903618022#21903618022

Jun 5, 2013 10:46 AM in response to ilovecode

Hadn't had the time to check all comments wether there are some people without using TimeMachine but all tests I did ended in the solution, that Mountain Lion crashes if you try to wake it up while a TimeMachine backup is running. So there should no problem waking up the system if TimeMachine is not active (that seems to be the problem here).

My TimeMachine is working with a TimeCapsule 2TB, connect via "join an existing WLAN-network".


If I try to wake up my Mac while there is no backup in progress, everything works quite fine. If I wake it up while TM is processing, either the Mac completely fails to awake (the password-screen gets frozen) or the Mac wakes up but all programms are "not responding". In both cases I only can get my Mac back with pressing the power button for >5 seconds to hard reset :-/

Mountain Lion no Wifi after wake from sleep

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