Wifi Constantly Dropping in Lion

I've updated to .1 and since doing so havent experienced any drop or freeze,YET.

Something I had started to do was to quit both iTunes and Safari before placing the machine into sleep. This didnt solve or prevent the drops of wifi or freezing of Safari but it did reduce the amount of times it happened.

Yes, Simsonic, I did call Apple. As I stated in an earlier post, the rep told me that if the solution he offered didn't work then there was nothing else he could suggest. Well, what he suggested didn't work. I tried everyting the rep suggested and everything that was suggested on this forum and one other. The only thing that held a connection even temporarily was pinging a server. Toward the end even that was not working. My WiFi and my Ethernet experienced identical conditions. What finally worked was installing 10.7.1. And, as you can see from the notes posted here, installing 10.7.1 hasn't worked for some people.

Ok, I wrote a cuple of pages back, that a clean install of Lion would have solved my problems....it did...for like 7hrs the mashine was running perfect. After that it was worse than before....

After Logic then crashes all the time and some Plugins made problems, I brought the Snow Leopard back in Business....I also wrote the Appstore Support an email about a possible refund....and surprise I got my Money back. I guess they are fully aware of all the problems and bugs... So now I am using my iMac with SL and maybe I try Lion again in a year or so.

So, the only way all works perfect is to be patient and wait for a later built of Lion.

All this just cost me about 30hrs of life....backing up and reinstalling for a few times....

I believe it has something to do with the Network software part of Lion; I was watching the Network system preferences window, and before my eyes, the DHCP lease failed to renew. When that happened, the IP address falls off the proverbial cliff, and then, poof! No Internet. Airport network is up and running as pretty as you please. A short time later, the DHCP lease renews, IP address is restored, and I'm free to surf once more... until it happens again 20 minutes later. This is where the fault lies, I think. Any thoughts? Any fixes?

has being happily using my imac 27" for 2 months until i upgraded to lion. ever since it has being nightmare. wifi has being dropping even when i was actively surfing the internet. (usually no less than 15mins, my wifi will dropped off)

yesterday night was the worst, the wifi crashed my imac 27" on lion (has reported to apple)

Below is a snippet of the error log:

Tue Aug 16 22:53:43 2011

Panic(CPU 1): Unresponsive processor (this CPU did not acknowledge interrupts) TLB state:0

RAX: 0x00000000ffffffff, RBX: 0x0000000000002710, RCX: 0x0000000000007000, RDX: 0xffffff807a625078

RSP: 0xffffff8080753c8c, RBP: 0xffffff8080753c90, RSI: 0x0000000000007000, RDI: 0xffffff806be5d004

R8: 0xffffff807a595408, R9: 0x0000000000000000, R10: 0x8000000000100000, R11: 0x0000000000000000

R12: 0x0000000000007000, R13: 0xffffff806be5d004, R14: 0x0000000000000003, R15: 0x0000000000000000

RFL: 0x0000000000000292, RIP: 0xffffff7f80ef5a1f, CS: 0x0000000000000008, SS: 0x0000000000000010

Backtrace (CPU 1), Frame : Return Address

0xffffff807a5bef50 : 0xffffff80002c783c

0xffffff807a5bef80 : 0xffffff80002c27b0

0xffffff807a5befd0 : 0xffffff80002d7bf2

0xffffff8080753c90 : 0xffffff7f80ed3bae

0xffffff8080753cf0 : 0xffffff7f80f1e006

0xffffff8080753d10 : 0xffffff7f80f1ed3c

0xffffff8080753d30 : 0xffffff7f80f1f127

0xffffff8080753da0 : 0xffffff7f80ecda3b

0xffffff8080753e20 : 0xffffff7f80ec6f5c

0xffffff8080753e60 : 0xffffff7f80ef74f3

0xffffff8080753e80 : 0xffffff7f80ec3015

0xffffff8080753ec0 : 0xffffff7f80e83936

0xffffff8080753ef0 : 0xffffff8000639536

0xffffff8080753f30 : 0xffffff80006382b0

0xffffff8080753f70 : 0xffffff8000638154

0xffffff8080753fb0 : 0xffffff8000820057

Kernel Extensions in backtrace:

com.apple.driver.AirPort.Atheros40(500.55.5)[01000ACB-C064-3F42-820F-BDE2008267 25]@0xffffff7f80e64000->0xffffff7f80fa3fff

dependency: com.apple.iokit.IOPCIFamily(2.6.5)[95ABB490-3AB5-3D5E-9C21-67089A9AE6A1]@0xffff ff7f80821000

dependency: com.apple.iokit.IO80211Family(400.40)[78A58272-2170-3068-9C63-88301C99C406]@0xf fffff7f80e2c000

dependency: com.apple.iokit.IONetworkingFamily(2.0)[59A00F6B-3710-3E07-9921-70C45782FF8C]@0 xffffff7f8090e000

Kernel Extensions in backtrace:

com.apple.driver.AirPort.Atheros40(500.55.5)[01000ACB-C064-3F42-820F-BDE2008267 25]@0xffffff7f80e64000->0xffffff7f80fa3fff

dependency: com.apple.iokit.IOPCIFamily(2.6.5)[95ABB490-3AB5-3D5E-9C21-67089A9AE6A1]@0xffff ff7f80821000

dependency: com.apple.iokit.IO80211Family(400.40)[78A58272-2170-3068-9C63-88301C99C406]@0xf fffff7f80e2c000

dependency: com.apple.iokit.IONetworkingFamily(2.0)[59A00F6B-3710-3E07-9921-70C45782FF8C]@0 xffffff7f8090e000

This morning, i did an upgrade to 10.7.1. intially i thought the wifi problem has being fixed. but after 30mins while i am still actively surfing the internet, the internet connection goes off....

And until a few minutes ago I thought the .1 upgrade had fixed my problem. Then I realized that Mail wasn't sending a message. I went to my browser, and it was the same old story: the computer had lost its connection to the Internet. I had to go through the diagnostics. Couldn't make my Ehternet connection work, but I finally go a connection back via WiFi.

Apple, this is NOT acceptable. This is a load of crap, in fact. Fix it. And don't wait a month to do it.

Hi guys,

I am from Germany and was looking for help in this forum.

Same problems over here, by the way.

I called Apple, they called me back and wrote e-mails etc., but nothing helps.

I keep losing my WiFi connection several times a day.

Nobody seems to know what it is.

Fact is that I never ever had any problems before I upgraded to Lion.

What is this?

Why can Apple not fix this?

Don't they read posts like this?

Don't they have guys who know how to write stable programs?

I really don't get it.

Certainly Apple is aware of this problem--it's been widely discussed as one of the most irritating problems with Lion. I agree that it's really hard to imagine they adequately tested Lion on any platform and didn't come across this problem. I had the misfortune of having a computer die a week before the new OS came out, so I have a brand new Mac that shipped with Lion and is suffering just like all the upgraded computers.

So I assume you have a MacBook Air then, don't you?

If it was shipped with Lion installed, it can only be the MacBook Air, as far as I know, since all other computer still have Snow Leopard as their OS, right?

This is strange, though.

I got my wife a brand-new MacBook Air and it never loses its WiFi connection, only my upgraded iMac does.

I have a Macbook Air, but every current Mac ships with Lion installed. The update just showed us that there are two different versions of Lion--one for the MBA and Mini, one for everything else.

Ditto. Same problem. But didn't start right away. I've been running Lion for about a week, but it just started today. ANNOYING!

it has being 2 hrs + since i deleted my "automatic" location in the network preference and re-created a new location. my wifi is still kicking alive...no drop connection so far.

Was having wi-fi drop issue with my late 2009 iMac. Full wi-fi bars all the time, but connection would drop all the time. tried all the suggestions in this thread to no avail.

updated to 10.7.1, deleted preferred networks, then added my home network back on. Was online for 12+ hours and thought 10.7.1 fixed the problem. Now it has just dropped again. Same behavior: full wifi bars, but no connectivity. So frustrating! Never had any issues under Snow Leopard.

As a lifetime Windows user and a frequent (recently, more frequently with all the new Apple hardware I now own) Mac user, I started thinking to myself how Lion could be Apple's "Vista". I stumbled upon an article by someone with the same conclusion.

I think Apple needs to figure out some of these problems and get Lion working correctly, lest we all will be waiting for 10.8!

tomo-

When your connection drops (and you still have full WiFi bars), can you try to ping a dns address like, www.google.com? If you can ping that address, but other apps like Safari, mail etc cannot get out, then you do not have a wireless issue rather a stack issue.

If you find you have a stack issue, I would call AppleCare post haste and tell them about this experiment.

Let us know.