Wifi Constantly Dropping in Lion

anthonyfromNJ The solution that apple representatives gave you has worked for me so far! Imac 27" late 2009.

Followed Adrian's advice https://discussions.apple.com/thread/3190651?start=315&tstart=0

I backup and deleted the system configuration, it sort of work until I try to use my iPone 3G and remote to control iTunes and remote speakers. It causes the WiFi to drop when the iPhone trieyed to connect the network. So it did not work for me.

The solution that Apple representatives gave anthonyfromNJ also didn't work when I try to use iPhone 3G and Remote. WiFi start dropping again. 😟

I had to turn off WiFi and conect the ethernet cable to the router wich is ok for an iMac and other desktops, but not for laptops. Apple representatives called me, so they are working on a solution... Hope that the solution has a permanent fix for all scenarios as my particular: Aiport Extreme G (main router), 2 Airport Express for remote speakers, iPhone 3G with Remote to control iTunes from anyware in the hause. It used to work fine with Snow Leopard. But since istalled the Lion upgrade, I'm experiencing constanly WiFi drops.

ozman666 wrote:

SO SICK OF RESTARTING ROUTER!!!

My laptop running Leopard has no issues, Iphone no issues, Wife's Mac book no issues. My lovely 27 IMAC crashes the wifi. This only seems to happen whilst video is playing (utube etc..).

Router restart works fine for between 1-10 mins then its gone.....

APPLE SORT THIS OUT!!!!!!!!!!!!!!!!!

Contact your router's manufacturer and ask them if they're going to fix their broken hardware.

There is literally nothing Mac OS X could possibly do to crash a router, and if there is, it's a firmware bug on the router.

The Wi-Fi protocol does not contain a "crash router" command. 😝

If you can plug your iMac 27" to the ethernet port direct to the WiFi router do it! It is a work around solution for your issue until there is a permanent solution to the WiFi drops with Lion. I also have a 27" iMac, no more WiFi drops since I connected the ethernet cable to the router. I mainly use WiFi for iTunes Remote speakers. And I can still use it if the iMac is connected to the router via ethernet.

Sorry, it didn't work when I try to use iPhone 3G and Remote. WiFi start dropping again.

Seriously, it seems like it would ALWAYS be best to plug in via ethernet with a 27" Mac anyway. It's not like you're going to tote it around the house or take it to bed with you.

As for the other posts, reboot your rout one more time and try the ping fix posted elsewhere. It's working for a LOT of people.

It might be worthwhile identifying which chips have the problem and which do not (if it is a chip-related issue). I have a new (Aug 2011) Mac mini with the Broadcom BCM43xx chip and running Lion out of the box. I have not experienced the WiFi problems that have illuminated this thread.

Sadly the 'Cmd+Alt+R+P for three restarts' did not actually fix the problem. Even though for the first few hours it initially appeared to stop the wifi from disconnecting randomly, if I leave the iMac on overnight, when i try to use the internet in the morning it doesn't work. The wifi says it is connected but safari says there is no connection (and no other net traffic works). When this occurs:

1) if I click on the wifi icon, it says 'looking for networks' but it doesn't find any available networks (whereas usually I have more than 10 available) and

2) if I turn off the wifi I cannot then try to turn it back on it does not turn back on.

Once again, the only way to get the wifi connected again is to reboot the mac.

System info says my wifi is Broadcom BCM43xx 1.0 (5.10.131.36.11)

I will get back on the phone to Apple support and keep troubleshooting and keep you updated.

WK: perhaps you need to read his reply before giving the wrong advice, his router isn't the issue as his other Apple hardware doenst drop the wi-fi, hence his router is still operational.

Whatever software changes have taken place with Lion with regards controlling the network settings needs addressing, not with anyones router.

I've found that the preferences within my network settings do not save even when enabling the 'padlock' to prevent changes.

several years ago I went APPLE all my eqipment etc. Could be the envy of some....at first some slight problems,but always getting worse as time goes. I'm always working on problems to keep things going, while my wife using "otherstuff" ha No prblems & enjoys her comp. I thought LION would be Great!! I hope apple seems the problems, SOON. It's even hard to get the "downloads", with Wi-fi & conplete networks cutting out. My problems are o same as many of you. I'm going to try some of your soulutions, to see if they work. Thanks & lets hope APPLE is listening

I have tried everyting on this forum. The "ping" fix worked for awhile but today has been failing to work. I have a Boot Camp partition for Windows XP on my older Mac, so finally I just booted into XP via Boot Camp and haven't had any problems with that computer maintaining a connection since. Maybe I'll go buy a copy of Windows 7 and install it on the newer computer so that I'll at least have an Internet connection.

Sheesh. This is absurd and, in my view, seriously impugns Apple's reputation for reliability and rock-solid software engineering. I'm on a brand new 27" iMac and would not be having this headache if I had purchased a much cheper Windows 7 machine. Apple doesn't need to wait until it releases 10.7.1. It can release the Internet problem fix immediately if it has figured it out and simply notify its customers via e-mail that the patch is available.

Apparently Windows 7 is a very good OS and incorporates and adds to many of the features that made Snow Leopard so usable and poular.

I am also having wifi dropping problems with 2008 unibody macbook after I upgraded to Lion. I have tried all the methods posted online and none of them worked for me. It is extremely annoying when I am working on remote servers. I hope Apple can release a quick fix for wifi, it's driving me nuts now.

p.s., I am using Apple Time Capsule which is very stable itself. So the problem is definitely a Lion bug.

Fred-Norfolk, VA wrote:

Apparently Windows 7 is a very good OS and incorporates and adds to many of the features that made Snow Leopard so usable and poular.

Then sell your Mac on eBay and buy a PC with the proceeds. Seriously.

Shaunmull wrote:

WK: perhaps you need to read his reply before giving the wrong advice, his router isn't the issue as his other Apple hardware doenst drop the wi-fi, hence his router is still operational.

He said:

My lovely 27 IMAC crashes the wifi.

If a router crashes, no matter what a client does, it's the fault of the router's firmware, not the client.

I said above there is no "crash router" command in the Wi-Fi protocol, so if the router crashes, it's a bug in the router, no matter what Lion asked it to do.

BTW - we see the same issue on SL 10.6.8 as well. Our workaround - we run KisMAC (a WiFi Scanner) constantly to keep the WiFi connection busy and from dropping...