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Wifi disconnects after sleep and takes long time to reconnect with Mavericks

Since upgrading to Mavericks whenever my MacBook Air goes to sleep (if I leave it idle) the wifi disconnects and it can take up to a minute to reconnect when it wakes.


Basically what happens is, as soon as it wakes I have no internet connection, the WiFi indicator is pulsing, meaning it is searching for networks, but it takes ages to find any, then after some time, usually between 30 secs and a minute all the networks in my building pop up and it instantly at that point reconnects to my WiFi network.


It is incredibly frustrating I was so used to the Mac being an instant on tool, now it takes longer to get on the internet than booting up my windows PC.


Any ideas what might have caused this?

Posted on Oct 28, 2013 4:08 AM

Reply
483 replies

Apr 27, 2015 4:00 PM in response to seb101

I have had this problem with several Mac Laptops, and it recently started to happen on my MBP which just came back from Applecare with Yosemite installed. After reading this thread I realized that I solved this problem once before by deleting all the preferred networks in the network system preferences and also by removing any entries in the "Search Domains" under the "DNS" tab.


I hope this helps.

Jun 15, 2015 8:06 PM in response to seb101

The thing that finally fixed it for me was from this here on Apple support:


OS X Mavericks: Choose preferred Wi-Fi networks


I found that in preferred networks i had an old optus mobile network which i used before getting fixed broadband when i moved into my apartment, and also my iphone's network. After deleting them from preferred networks and keeping just my current router's retwork, all seems to be working fine on my macbook pro. I've tried both putting it to sleep by closing the top, and also leaving it 15 minutes to go to sleep. In both cases I had an instantaneous connection.


Hope it works for some of you.

Aug 16, 2015 9:58 PM in response to seb101

This fixed it for me: we used Disk Utility to Repair Disk.


That was it. We had the same exact problem, namely that when we woke the MacBook Pro (with Flash Storage, Retina) it would take up to a minute to connect to Wi-Fi.


It turned out that the startup disk was slightly corrupt, and for some bizarre reason, repairing the disk was all it took! You should try it; after all, it can't hurt. We did the fix more than 10 days ago, and haven't seen a recurrence of the problem even once since then.

Aug 28, 2015 3:14 AM in response to John Glenn

I believe the cause of this issue is not just a single one, and it may depends upon several (unkown) factors.


In my case, after months of troubleshooting, I have definitely fixed this way: my home LAN is made up of a central router and a wifi-extender (both Netgear). I noticed that the slow reconnecting issue was not happening when my MBA was in the main router range, but only with the extender. Suspecting in a DHCP issue, I have set up my Mac into the "reserved address" list of my main router, assigning it an IP. In this way, there is no DHCP handshaking during the connection and.. voila.. the issue disappeared forever. Now I am connected as soon as I lift up my lid.


Fabio

Dec 12, 2015 9:39 AM in response to keepitwithmine

Moving regularly used network(s) to the top of the list worked for me too.


I had replaced my BT router - the new one therefor appeared about towards the end of my ridiculously long list of networks.Presumably the whole table to that entry was being searched everytime. I had got 'remember networks' ticked - so MBA was doing precisely what I had asked it to do.


Because I use keychain every single network access from every single Apple device was on that list.

I removed a lot of the redundant ones at the same time.


Having read many posts on this thread though it does look as if there are several problem conflated under this heading though - inevitable I guess with this kind of problem.

Maybe try a few proposed solutions yourself, rather than wait for a fix from Apple for a soution which may be down to your own particular config?

Good luck.

Wifi disconnects after sleep and takes long time to reconnect with Mavericks

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