New Macbook Air - wifi connectivity problems

You can kill your wifi here, then turn it on the same way.

Check my post from 5 minutes ago, see if that helps

Fred,

Are you seeing Wi-Fi turn off or are the bars simply turning grey ? If you are seeing WiFi turn OFF and you have to click Turn WiFi On to get Wifi working, then it could be bad hardware. On the other hand if its just getting disconnected and you are seeing the WiFi icon with grey bars it could be a software or interop. issue.

All you folks runing dd-wrt, are you running your wireless in 11n only mode ? Try changing that to 11a+n mode if possible and check if you have any connectivity.

Are you guys having issues connecting in 5 Ghz or 2.4 Ghz ?

Taking a break. Thanks for the suggestions. Will look into them some time this weekend time permitting and let you know.

I have similar problem with my new Macbook Air and WiFi. The connection drops, when I try to download something bigger than ~10M(pinging every IP, even router, gives timeout). And my "wifi" icon is still not grey and this network manager says that I'm connected.

The only way to not get dropped from WiFi is to have WiFi Diagnostisc tool turned on in backgroud. Then WiFi connection will remain OK. But why?!

My router works OK(It's Cisco WAP4410N) with few other latops/mobiles, so it's probably something with Macbook?

Having the same problem and I just bought my MBA last night. Giving up and heading to the apple store today.

Would you be willing to post their solution? I'm hoping it's not a hardware problem. I need this machine working for a trip early next week and there isn't an apple store close by but I'll make the trip up there if I have to.

It isn't my router, I have two networks at my house (two routers) and it happened on both. I haven't had a reoccurrence of the issue since I did what was contained in my post above.

It definitely isnt the router. Looks like a hardware problem and running diagnostics in the background prevents it dropping off.

Before you take it back, try what I posted last night, it seems to have worked for me-

Here is what I have done -

renewed DHCP lease, Change MTU (there is a link in the story linked below that explains how) settings and then followed the instructions on this page.

http://osxdaily.com/2012/11/30/resolving-stubborn-wi-fi-connection-problems-in-m ac-os-x/z

I tried these steps. It dropped again about two minutes after the reboot following deleting the preference files. Once the wifi drops, it will no longer see any wireless networks. If it's working correctly and I turn the wifi off then back on, it will continue to work correctly until it drops.

After that, the machine will no longer see any wireless networks until it's rebooted or it wakes up from being asleep. I also noticed that the machine will "freeze up" for about 5 seconds at the same time as the wifi dropout. Definitely seems like some sort of hardware issue. i have an appointment this evening at the Genuis Bar. I'm hoping they can fix it quickly as I need the machine next week for a trip.

Thanks everyone for your help. I'll keep monitoring here and report back what the Genius Bar tells me tonight.

Good luck, I hope they figure it out. That sounds a bit worse that what I was experiencing.

I just formatted the drive, and I'm downloading OSX for a fresh reinstall. If that doesn't work I am going to do what you did gmc74. By then, maybe I'll have another answer.

If a full reinstall does not work, I doubt what I did will, but good luck.

tried all ways posted here. didnt work. returned it this morning. they exchanged it. now its working perfectly fine. it has to do with the hardware.