Losing network or internet connection after sleep/wake

Looks like I spoke too soon. Yesterday I had tons of dropped connections. Actually, this time it was different than before. The problems weren't limited to waking from sleep; the connection would just periodically drop out. Seemed to happen almost like clockwork every few minutes. At first I thought it was the wireless connection where I'm staying (at my wife's parents' house). However, my father-in-law has a Macbook Pro and it wasn't having any issues, and my iPhone didn't have problems either.

This is incredibly frustrating. Has anyone talked to an AppleCare rep that has even acknowledged this as a problem?

Have tried this fix. Worked for a few weeks and is now reoccuring. About time Apple addressed this issue.

Apple doesn’t routinely monitor the discussions.

Send Apple feedback. They won't answer, but at least will know there is a problem. If enough people send feedback, it may get the problem solved sooner.

Feedback

I have a slightly older MacBook Pro (2010) and have found the WiFi very erratic with Lion and Mavericks. The wireless connection often drops and the Wifi cannot detect any wireless networks, particularly after waking from Sleep mode. Occasionally I get an error message saying "No Wifi hardware installed." Rebooting fixes the problem temporarily but this is a nuisance. Tried troubleshooting (resetting SMC/PRAM etc) and then upgraded from Lion to Mavericks hoping that would fix the problem. Alas, it hasn't. I am having to use Ethernet quite often. I rarely use Bluetooth so I don't think that can be the source of the problem.

Some observations using a Netgear 3300 router with an 801.1N wifi connection, MacBook Pro, Bluetooth ON;

(1) using the default AutomaticNetwork Location

- no wifi droputs running Snow Leopard,

- frequent wifi dropuots running Mavericks (approx every 2 mins) and after sleep.

(2) setting up a NEW Network Location

- no wifi droputs running Snow Leopard,

- no wifi dropouts when running Mavericks, occasional wifi loss after sleep

(NB: wifi stability under Mavericks was imediately improved by the new location, but got much, much better after connecting to an external public wifi network)

(3) 801.1G wifi connection

- no wifi droputs running Snow Leopard,

- no wifi dropuots running Mavericks.

(NB: dual channel routers can run separate "N" and "G" connections simultaneously)

Suggestions;

- try a New Location

- take your laptop on an outing to a public or work network

- consider using a slower "G" wifi connection if the above doesn't help

Hallelujah! It worked. What an annoying problem. I don't usually install a new IOS until most of the kinks are out but broke my own rule, regretably, this time and have been paying for it big time since October. I tried other workarounds but they didn't last. Hopefully this one will. A million thanks.

Have downloaded Mavericks and carried out a clean instal. A bit fidly and time consuming, but so far no dropping out. Hope this is the end of it. Next time new versions OSX are released, I shall be waiting several months before installing!

My problem was that my mac pro early 2008 lost network after i tried to back up to time machine. I figure out that turn off the display sleep and the hard disk sleep and i manage to take a back up. Crazy but true. The next problem is that time machine goes black while entering to it so i turn on mirroring to multiple displays to enter.Mavericks needs an update quickly!

This doesn't work for me. Here's another wrinkle, however: I find that wifi fails to reconnect only when a paired bluetooth device is communicating with my computer (bluetooth icon with 3 dots...). If bluetooth is on, but no devices are communicating (e.g., no mouse, but inactive paired speaker), my macbook re-connects to wifi automatically...

Back to drop outs again after cleanskin installation of Mavericks. Frequency of drop outs less, but still should not happen. Apple has let this problem drag out too long.

I have this same problem with my 2010 iMac 27in which connects over ethernet.

I have tried all the suggested "fixes" to no avail.

This network dropout usually occurs after a fresh boot when the Clock puts up a warning about the date being set to 1901.

My temporary fix is to open network preferences, ethernet, advanced and switch Config IP4 from Manually to Using DHCP and then to Renew DHCP Lease. The network then becomes active again.

Interestingly when I boot into Windows 7 in Boot Camp the network is always active, which just shows it is a Mavericks problem and not a hardware problem.

Mavericks also seems to reset various preferences all on its own without my input. I have to go back and set them back occassionally.

Using Mavericks Cache cleaner to remove all the caches has no effect on this behaviour.

It is pretty frustrating.

I'm new to the apple discussion forum and my first post was earlier in this thread describing how I "solved" the annyoying problem of losing the Internet connection via ethernet on my iMac after sleep mode by removing and reinserting the ethernet cable.

Although my problem was the same as the rest of you, I later realised that I was on the wrong thread as I was still using Snow Leopard, not Mavericks. (I see there is also a thread re the same problem using Mountain Lion so it's clearly not solely a Mavericks issue).

I'm posting again today after finally biting the bullet and installing Mavericks recently (no choice, some software I use no longer supported 10.6.8) I have not, SO FAR (very wary of speaking too soon) experienced a loss of Internet connection via Ethernet after waking from sleep mode.

I almost feel like I'm tempting fate writing this post but a) it would be quite ironic if the OS that has caused the problem for others has been the solution for me and b) it deepens the mystery even further since even just going by this thread it shows there is no "one size fits all" solution to this.

My new frustration since the upgrade is that scanner of my laser printer/scanner Canon 1235cn no longer works and for this it would appear that the solution may be more drastic - a new scanner since neither Apple nor Canon provides the necessary drivers. But that's an issue for another thread.

In a nutshell, "as one problem closes, another one opens"!!

Before giving up on your scanner I suggest you give Vuescan a try. I have an "unsupported" SCSI Canon film scanner which works fine with Vuescan under Mavericks. What is even better is that the developer is very supportive.

Thanks pillat5dock but sadly Vuescan says the same as Image Capture, that there's no scanner connected. Luckily I can still print (it's a combi printer/scanner). From the forums here I understand the non-recognition of scanners is a common issue with Mavericks (to which there is so far no solution). But thanks anyway, I appreciate your trying to help.

Thanks a ton reforger.

I just bought my MBP around a couple of weeks back and after my OS update a couple of days back,I was facing a lot of wi-fi connectivity issues.All my devices including my iphone and ipad were connecting but my MBP after sleep couldnt even find my router although it was finding almost all the rest in my apartment block.That was driving me crazy.Your suggestion has really helped me.I created this id just to thank you.