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

I agree with you. I checked on my Macbook Air too with Bluetooth on and sleep mode, it doesnt stay connected but with BT off it does.

And earlier it used to disconnect within a mood in sleep mode so I made a change in the com.apple.PowerManagement.plist in Computer > MacHD > Library > Preferences > SystemConfiguration

and made all the values same as the on "on a/c power"

I had Xcode so it was easier to edit rather than the notepad.

You wont be able to edit in that directory itself so make a copy on the desktop edit it(with notepad or xcode as i prefer) then save then changed file and paste it in the main directory replacing the previous unedited file.

Thanks.

This will definitely work for all of us.

Just curious if we can all pool in some info and see what caused or solved the problem.

Has anyone tested if the problem exists with non-password protected WiFi on 2.4GHz and 5GHz? It worked for me.

Has anyone tested if the problem exists in safemode with bluetooth on? It worked for me.

I had updated to Maverick (so no clean install).

My resolution was a changed logic board and airport card.

I did as Nishdesai95 said and it DID NOT resolve the problem for me.

I'm having this problem with my new Macbook Air (2013 model). It might have something to do with bluetooth (as others have mentioned), as it seemed OK for the first few days while I was setting it up. Once I got it all setup and starting using it, I usually use a mouse for serious work, as I don't really care for trackpads. That *seems* to be about when I started noticing this problem. I'll experiment a bit more with that.

Unfortunately, this (or something extremely similar) has been a problem for a LONG time. I remember having this same problem with my 2007 MacBook Pro (and earlier MacBook Pros I had from my employer). It seems to come and go over the years with various updates to the OS.

What problem are you having exactly? The one with bluetooth ornjust the wifi disconnecting because I checked that if bluetooth is turned on and even with my Workaround it wont work. But my workaround works perfectly well for teo of my friends and myself. Even if you use Control + Shift + Power to turn off the screen manually

So I couldn't read all the 11 pages cuz it's half past midnight and I am dead tired... but since I just got my connection back I want to share the experience before I move to the land of no wi-fi connections: 😢

Having kind of the same problem... MacBook Pro takes 30 seconds to connect to the internet after waking-up every time, but that I can live with! what KILLS me is that about once a week after my macbook pro goes to sleep it will take about 15 minutes to find ANY network connections!

Tonight I tried the Bluetooth too ( which in normally off) and realized that it can't identify any of the devices I normally connect to either.

I restarted my laptop like 5 times, turned the wi-fi on and off at least 20 times, it didn't work >:/

Then decided to bring my laptop to the desk where I could search the problem online on my father's computer ( the modem is kept right on top of the desk) and BOOM! It connected to the **** network and could find the 7-8 other networks from the neighborhood!

I don't know what happened exactly! like was it moving the laptop around that might have caused the ports or cards inside my laptop (sorry not good with technical names of the hardwares AT ALL) to slightly move or was it getting 5 steps closer to the modem?

Apple I didn't just spend half my savings to get a mac that would drive me nuts whenever I need it! give us a fix!

Ok, an update (see my previous posts if interested)

This regards specifically the problem with WiFi (sometimes) not connecting or taking a long time to connect after waking from sleep (or even after restarting the machine), only when BT is enabled. Turning WiFi "Off" then "On" (sometimes a couple of times) would get WiFi to connect to my (only) preferred network.

I installed a clean build of Mavericks for testing purposes. I installed to an empty Mac OS (Journaled) partition from an external drive using the Mac App Store installer so as to start from a truly clean install. I did not (re-) install from the Recovery Partition. So, 10.9.1 on a new partition - same machine, same SSD.

RESULT: That new, clean-install version of Mavericks appears to have no problems with WiFi connecting after sleep/restart when BT is enabled. The problem is GONE -- WiFi is connected, or connects, immediately. (I will report back if this changes.)

This got me thinking... I realized that my current production system was arrived at as follows: I got a new rMBP from Apple that came with Mountain Lion. I upgraded it to Mavericks. At that point I restored from a clone of an older rMBP, which had also been upgraded to Mavericks from Mountain Lion. (I might point out that the older, mid 2012 rMBP developed the same WiFi issue only upon upgrade to Mavericks.) And, you know the rest... I now had "The Problem" on the new machine.

So, this latest result -- namely a problem-free post-sleep WiFi with Mavericks -- suggests that the problem lies either with the system(s) having been upgraded from Mountain Lion to Mavericks (vs. a clean install of the latter). OR, my old rMBP had some "funky" setting that was the root problem and that just got cloned over to the new rMBP. Though, again, the problem only began on the "older" machine after I upgraded to Mavericks, so do the math on that...

In any event, emboldened by my findings, (1) I erased my current working system partition and (2) installed a clean version of Mavericks from scratch using the MAS installer. (3) I then used Migration Assistant to restore from backup my Docs and Applications but NOT the "Computer and Network Settings". Once that was complete, I booted into my clean install of Mavericks with all of my applications and documents in tact. A few things needed to be tweaked, but not much. The result is a (so-far) working machine with all my "stuff" in tact but without the WiFi problem that has dogged me since Mavericks' release.

I can't be sure whether my not restoring the Computer and Network Settings with Migration Assistant played any part here. It may be just the fact that the Mavericks install was a clean install (as opposed to a reinstall), or it may be some combo of both.

The upshot is that (at least for now, and in my case) it seems "the fix" (if you can really call it that) is a clean install of Mavericks (again, NOT a reinstall from the Recovery Partition). That done, the problem is gone....I hope!

I'll keep people updated if interested...

P.S. I know the list of "fixes" for this issue contains (as a last-ditch effort) the re-installing of OS X. Having had the problem on two separate machines, I had a feeling that wouldn't cut it. And I still doubt that it would. It has to be a new install it would seem. (But, again, without further testing I can't be certain.)

Lilola,

Your problem sounds like a simple case of wireless interference.

Chrismartin,

I have the exact same problem as you and I tried exactly what you did with the clean install on a partitioned drive and that did TEMPORARILY solve the problem for me but it came back after about a week.

I did a bit more testing, and mine is certainly related to Bluetooth (sorry, I haven't read the whole thread). If I turn my Bluetooth off before putting it to sleep (closing the lid), then it always connects to WiFi so fast I can't really detect a delay.

But, if Bluetooth is on, it almost always fails to connect, or takes a long time.

As for historically, I never tested it out completely, but WiFi has been problematic on Apple laptops for many years now. I can't figure out why they have so much trouble. It's the kind of thing I'd expect on a PC with various vendors, but Apple should be able to keep some form of control over this. In the past, various system updates would fix it for one set of users, and then break it for others, until the next release when a different set of folks would have problems (I used to work in IT for a Fortune 100, so had access to a good number of laptops to see this happening).

chrismartinphd - Mine will throw a bit of a twist in, as it’s a brand new Macbook Air. I installed a few apps and connected to things like Dropbox, but it’s a totally clean install. I didn’t move over my old system, as this is an additional system to my iMac.

I didn’t notice the problem until I decided to start using a spare Magic Mouse about a week ago (I just can’t get used to the trackpad for extended work.)

DTS419 & Lil0la - That *could* be interference, especially if it always works when right by the wifi base-station but not in other parts of the home. But, I’ve had many Apple laptops in the past that acted like that no matter how strong the signal or what other stuff was around. My last MacBook Pro (2007) drove me nearly nuts during a couple OSX sub-revisions, as it was so bad, I had to mostly use it on Ethernet during those time. Then, Apple would release a point update to OSX, and it was rock solid... in the exact same environment.

More than 24 hours later...

Brand-new, clean install of Mavericks on blank partition (see my previous post).

Haven't had a single problem with WiFi connecting as I did before. And, bonus, the clean install means everything is zippier all around.

Still not sure exactly where the "problem" entered. Again, see previous post for more info.

@DTS419: I have serious doubts that this is a "time-stamped" issue such that it might return in a week -- this appears to be a genuine fix. But I will certainly let you know if it begins to fail again.

@ Steve Wilkinson: Yes, that is a twist. So your MBA came with 10.9.1 (Mavericks), or...?

I'm still completely problem free, fwiw.

@ chrismartinphd - I can't remember the exact point version, (maybe 10.9.0.4?) but it was Mavericks and then while setting it up, updated to 10.9.1.

Another thing I should have noted when talking about the history of Apple's WiFi issues earlier, is that at that time, it has mattered whether using an actual Apple wifi router vs various 3rd party ones. I think this sleep-Bluetooth related problem is different to the more general problem some others are having.

I'd tend to believe it might be the Bluetooth interfering, as BT can do that, but it's SO consistent, only coming out of sleep, and turning it off and on seems to then establish a very stable connection until the next sleep.

After poring over the thread, I tried removing the com.apple.Bluetooth property list file:

$ sudo rm /Library/Preferences/com.apple.Bluetooth.plist

and rebooting. This immediately solved my Wi-Fi issues (which also happened on a fresh boot, not just when waking up), though it unpaired all my Bluetooth devices save my Magic Trackpad. I've since reassociated my desk speakers as well and all has been well for 24+ hours now.

I wonder if @chrismartinphd's reinstall had a similar effect. For the record, this is a 2012 MacBook Air (i7, 8GB) that came with Mountain Lion and was upgraded to Mavericks, but I don't think I immediately noticed the issue. I think it happened around the time I got the Magic Trackpad, or (as I blamed for awhile) when my work network switched to a hidden SSID.

@ zigg1 - My SSID isn't hidden, and I experience the the Bluetooth related problem. That said, the older problems I refer to in some of my posts above were dependent on whether the SSID was hidden or not, with non-Apple WiFI routers. So, that might be another point of testing to be aware of for people following this thread.