Losing network or internet connection after sleep/wake

Thanks antzcrashing for attempting to rationalize this thread, as firefly said the fixes on this thread aren't permanent, I've noticed the Apple security updates break my temporary fix of creating a new wifi profile and removing bluetooth from the connection list.

I don't think the Apple tech team read these threads so we're basically just floundering around trying to fix what is most likely a component firmware / OS incompatibility issue.

There are similarly long threads, like the one for iPhone 4 users who can't get any sound on phonecalls since the iOS6 opgrade.

Not every mac or iDevice is affected because the firmware and components vary slightly within a model's production run. Those of us unlucky enough to buy from the batch that aren't fully compatible end up here on this toothless forum.

There is only one fix, that's to get the offending component's firmware flashed (not a diY job) and I really doubt Apple are going to waste time writing a patch or recalling the duff units because most of us just sell the device on eBay and dutifully buy a new one. Sadly, Apple's marketing dept has more influence than their tech-support dept.

Hi Reforger

Thank you!

This works for me - setting up a new location as Home (rather than auto) and following your list as below

Network settings - Location - Edit Locations

Add a new location .. "Home" for example

With home selected, click the cogwheel below the network services and choose "Set Service Order"

Reorder the services so your preferred connection type is at the top

After that, select each service in turn (assuming you have a few - like Bluetooth PAN etc)

Make the services you are not using inactive

Apply

This problem has plagued me for many months and driven me to despair! Especially as I do not have the same problem on my iMac - only on my 2007 MBP. I had to restart my MBP each time after sleep. Both are using same versionof Mavericks (10.8.3) so perhaps it is to do with the Firmware on the MBP?

Tried re closing Bluetooth - also - but then I could not use my Apple wireless keyboard! Anyway - it works without disabling Bluetooth and I have done several sleep tests today. Internet connections checked via Diagnostics and all 'green' GREAT

Anyway - thanks again!

Update - I spoke too soon!

Problem now back again........... red lights for ISP, Internet and Server - as before!

What can I do?????????

I had the same problem. It happened all of a sudden on Friday last. I thought it was my office internet providers fault. All computers were very slow to connect. Then when I went home I had the same issue. All devices at home were slow to connect. Since both locations were the same internet provider I contacted them. They assured me there is nothing wrong with the connection.

Then a couple of days latter I noticed that it was only when I was on my MacBook pro 2013. Otherwise the internet connection was fine. I went to a new location, a hotel and the macbook was fine there. It was only my office and home.

I tried every solution I found but none worked until I tried this forums solution of Delete System Config folder in /Library/Preferences

Everything is OK now. I think theses files got corrupted when I ran the macbook from a sleep.

Hi Thanks for this, however do you mean to delete the complete folder 'SystemConfiguration' - or just each of the contents (all .plist) (and including another folder inside which is titled CaptiveNetworkSupport and contains settings.plist (maybe that one is the cause of the problem?

So, do I delete the whole folder - if so how is that replaced since individual .plist are when I reboot (forgive my ignorance!) Please tell me EXACTLY what to delete.

Finally, I have also been having this loss of connections even whilst using my MBP - and not only confined to sleep!

Yes delete the folder, then restart. The folder and it contents will get recreated.

Their are two SystemConfiguration folders so make sure to delete the one /Library/Preferences/SystemConfiguration. I deleted the other one by mistake and the macbook complained I had no wifi hardware installed. I took it out of the trash restarted and then deleted the correct one.

HI OK I have down this and here are the details of the contents - before first and after

Why are there now only 4 .plist files? and, do I need the others? If not why not and why where they there and where did they come from?

Do you think these (or one ) causes this problem?????/ Again, if so how?

thanks again - will keep checking status of this and repost if it works or not!

Sorry! This does not work either! Still loses ISP, Internet and server after sleep - and even sometimes whilst I am using the MBP!

Anu other solutions - especially working ones - gratefully received as this is really annoying to have to restart several tines a day!

Is there a Firmware issue - as someone suggested? If so how can I tell if my Firmware needs updating?

I'd like to thank Reforger for the original post suggestion, which appears to have fixed my WiFi connection issue... so far... fingers crossed... THANKS!

The only thing I'd like to add is that I deleted all other services in the network prefs leaving only WiFi, but when I went to the 'Set Service Order...' option there were two services: Wi-Fi and Bluetooth DUN. The latter was the first option and it may explain why I was picking up WIiFi, but couldn't connect to the internet?

There was no way to delete the 'Bluetooth DUN' option, but by setting it as the second behind WiFi in the Service Order my iMac now appears to be able to connect back up to WiFi post sleep...

Food for thought???

Hi, An dutch website (appletips.nl) found the solution that works (also with an terminal command), you can find the article with translation here: http://bit.ly/1z1ii5z

Original article: http://www.appletips.nl/macbook-wi-fi-problemen-oplossen-na-het-ontwaken-uit-slu imerstand/

This worked for me--thank you!

Update Available "Fingers Crossed"

as far i as i know, OSX update should have fixed this problem . but I still experiencing this issue . at times waking up the computer from sleep , ends up without any internet . i have to turn off and on the connection to get back on the net.

thank you.

our iMac was experiencing the same problem; no network connection after wake from sleep.

it's a new-ish model, purchased in Dec 2013, running Mavericks.

cheers.

Working on Macbook Pro mid 2012 that was updated from SL to Mavericks.

Been working with Mavericks for a couple months and didn't had this problem until today. The only change (a major one) is that I installed Mavericks from scratch instead of updating since I swapped the HD for an SSD.

Tried this solution and seems to be working so far. Before wifi would be disconnected every time the machine went to sleep and won't come back until wifi was turned off and on again.

Thanks!