Mountain Lion no Wifi after wake from sleep

Hi, has you wifi connectivity been stable (between sleeps) since you last posted your fix?

Hi there,

I've tried this fix — nothing happened. Still having this issue =(

Connection is NOT stable =(

I have tried this top. Still network freezes after wake from sleep on mid-2009 MBP. Not good. Going to go back to Lion I think.

worked for me! thanks!!!!!

It seems to be (imho) that this problem is caused by the new background update system that was first introduced in 10.8 version. I am inclined to think so because after a «short» sleep system works perfectly, but after a «long» sleep wi-fi freezes, becoming a beachball =(

I have an addition.

Check to see if you have an older pre-version 7 version of parallels installed. I checked another suggestion which was to delete to network preferences in the library folder. When reviewing those files I noticed that the parallels network interfaces were listed. On a hunch I upgraded to parallels 7 which I already purchased which parallels says is now mountain lion compatible, the only version that is certified. After a few sleep-then-wake tests on my MBP it looks to have fixed the issue. I'll report back if this changes back to the previous behavior and which Wi-Fi and the networking preference pane would freeze.

Fingers crossed!

Never mind. New test with a much longer sleep has the freeze.

What could this be?

Another odd thing that is associated with the wifi freeze is that when this happens, I cannot launch any apps. Tis lasts wifi freeze became a system wide thing when activity monitor, the force quit window and the finder all beachballed and I could not launch apps at all. Only a hold the power button shutdown worked.

This is super annoying.

primalman, yep, this is quite similar to what I have, short sleep is OK, long one — we've got a freeze( no idea how to fix it(

I posted about something similar here: https://discussions.apple.com/thread/4141159?tstart=0

But, rebuilding the wifi in network settings didn't solve it for me.

I am reinstalling ML now, just to see. But, after a bit kore researching, has anyone tried to change the ipv6 setting to local only? Things imam seeing seen to suggest that there might be issues with this. As soon as I am back up I am going to run my usual wifi freeze tests, then change my ipv6 settings.

Same problem here - glad I'm not alone - maybe Apple will send a fix. I followed the proposed solution, so we'll see if that does anything. But after seeing the replies on this thread, I'm not hopeful.

Most likely that this fix will not affect deep sleep problem. Still monitoring my own laptop and refreshing the feed in hope to see the solution... Will see tomorrow, because I don't know what time exactly needed for mb pro to go to deep sleep instead of short one.

primalman wrote:

I am reinstalling ML now, just to see. But, after a bit kore researching, has anyone tried to change the ipv6 setting to local only? Things imam seeing seen to suggest that there might be issues with this. As soon as I am back up I am going to run my usual wifi freeze tests, then change my ipv6 settings.

I'm game. Just set it now and will get back to you to see if it solves my issue. This has been annoying me since Lion and the only fix I've been able to come up with so far is to turn wi-fi off for 10 seconds and then turn it back on.