Lion WiFi Connection Problem

I have now disabled the IPv6 settings on both my iMac and MBP (editing the plist and making them __inactive__ to completely have it off) and besides connecting to the wireless network faster, my iMac still won't work over N... connects just fine, but with zero to slow (it tries to do something but eventually times out) network activity...

I have been working through the various suggestions ( thanks everyone ) and my wiffi has become more stable on each occasion, I changed theIPv6 to Local link and that has given me a very stable connection all evening.

I have recently started using BT HH3 which initially was all over the place but it seems as if the systems learn and improve as they have some time working together, this is probably imaginary but I am sure my boot up times are reducing even though I have done nothing other than disabling the resume windows option and unchecking the open previously opened windows in the log out box.

I'd like to add to this list. With Snow Leopard, I NEVER had WiFi issues. With the upgrade to Lion, I do. It's not the WiFi router, becuase all my iOS/Windows devices connect just fine. Waking from sleep is usually an issue, where I have to turn WiFi off and then on again to get it to work (although it shows a full signal strength either way). Also, when connected, the WiFi drops intermittently, such as when watching an Instant NetFlix movie. Fix please!

iMac late 2009

2.8 GHz Intel Core i7

8 GB 1067 MHz DDR3

ATI Radeon HD 4850 512 MB

Mac OS X Lion 10.7 (11A511)

Here is my latest update...

Logged on to the router, lowered the N speed from 300Mbs to 54Mbs and I can work with it no problem now...

sadly, it defeats the purpose of N speeds as I'm now running at G speeds (even though I'm on the N network) to my wireless NAS...

but at least that has narrowed down the problem to a working condition...

as a recap

• DNS: 8.8.8.8

• IPv6 is Off

• Netgear WNDR3700 Dual Band router broadcasting both G and N networks (now both set at the same 54Mbs speed 😟 )

• WPA2 Personal Security

• Location: Automatic

• MBP has a Broadcom wireless chipset, iMac and Router have an Atheros chipset

• N network @ 300Mbs = both computers connect, only MBP would have actual network activity, iMac everything times out

• N network @ 54Mbs = both computers connect and have full network activity

• G network @ 54Mbs = both computer connect and have full network activity

• G network = Channel 11, N network = Channel 161

Computers

2010 13" MBP

2011 27" iMac

... but still, if we take stock of the situation, no final solution, no intervention by Apple.

.......ma a tutt'oggi, se vogliamo fare il punto della situazione, nessuna soluzione definitiva, nessun intervento da parte di Apple.

Yep, count me in too... Same as others, I have to re-connect to wifi after waking from sleep...

Not sure about you guys, but my bluetooth (magic mouse) is doing the same thing. I have to disconnect then reconnect the mouse after waking from sleep. I really hope Apple resolves this connectivity issue very soon.

Count me in. Since upgrading to Lion, my WiFi connection drops, and the router disappears from the list of available wireless networks. Two ways to get connection back: restart my iMac or turn Wifi off then on again. But then 20-30 mins. later it happens again.

Count me in. I just started to notice this problem about 2 days after I had installed Lion, and boy is this problem clearly evident. I'm just thankful I'm not the only one with this problem. I can't have my WiFi dropping every 5 minutes on my iMac. Hopefully Apple can resolve this issue with an update soon.

Hi Guys,

My issue more serious than dropping connections. I CANNOT CONNECT!! I keep getting connection timeout from our all office access points. But anywhere else , i can connect decently.

I joined this company for 6 months now and had no problem whatso ever until 1 day after updating to lion. I HAVE NO IDEA , is it software or hardware!! In boot camp also my wireless is not connecting to routers...I cannot believe it is hardware issue because i can connec to all other networks.

Changing the wireless router config is IMPOSSIBLE. it take me 10 days to get appointment to see the IT guys and they are not going to change anyting on router. I end up buying a wireless usb adapter. It is ******* me off. Any help?

This is my wifi card spec:

CoreWLAN: 2.0 (200.46)

CoreWLANKit: 1.0 (100.43)

Menu Extra: 7.0 (700.42)

configd plug-in: 7.0 (700.57)

System Profiler: 7.0 (700.3)

IO80211 Family: 4.1 (410.1)

WiFi Diagnostics: 1.0 (100.26)

AirPort Utility: 5.5.3 (553.20)

Interfaces:

en1:

Card Type: AirPort Extreme (0x14E4, 0xD6)

Firmware Version: Broadcom BCM43xx 1.0 (5.100.98.75.6)

MAC Address: e4:ce:8f:03:ae:20

Locale: APAC

Country Code: X1

Supported PHY Modes: 802.11 a/b/g/n

Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161, 165

Wake On Wireless: Supported

AirDrop: Supported

Status: Connected

No problem with my Mac Pro and snow leopard ,then I upgraded to Lion and my connection keeps timing out. Hardware and all my other computers are working perfectly except my mac with Lion. Unacceptable considering that Mac has a great system but should have fixes for it before puts it out for use. If we are the testers for Lion then we should be compensated for all the trouble it's costing.........just my opinion.

My problem started with a late OS update of Snow Leopard (10.4 or 10.5), but it was infrequent and not serious. Since updating to Lion, it has become both frequent and serious. Until Lion, the dropping incidents mainly stopped the loading of webpages on either one or the other of my networks.

I have two Airport Extreme Base stations, and each network is on a different one. But, it doesn't matter which one I am on, I drop connections.

If I change to the network that had not been in use, everything works. In Snow Leopard, when this happened, the Airport icon remained unchanged (full solid gray arches). It never dimmed.

With Lion, I am dropping the connections frequently, the arches on the Airport icon become a pale gray or even disappear entirely, but sometimes there is a line in the middle. On the other hand, sometimes it drops and the Gray arches remain solid. And, if I switch to the other network, I am again connected.

I have changed channels, moved my base stations to the extent I am able (both are connected by Ethernet), unplugged one base station to see if it is interfering with the other, etc., and although there is an extremely slight improvement with the repositioning of the base stations, it is slight indeed. In reality, nothing seems to help. This requires an Apple fix.

My other Apple devices seem to work fine so I believe it is an OS problem.

Hello all,

I have just got off the phone from Apple, and my ISP about these issues we are having with Lion dropping its WiFi connection all the time. Apparently its to do with the channel your wireless router is transmitting on. The guy at Apple said that of the 12, apple products are made to work with 4. These are Channel 6, and Channel 11. I forget the other two. The way to fix it is to go into your router and change the channel from Auto (as mine was on) and set it so that it broadcasts on one of those channels. Its been an hour now and i havent had my WiFi drop out once.

If you dont know how to change your channel, do what i did. I phoned my ISP and asked, they talked me though it and now everything is working great!!!! Fingers crossed anyway!

Good luck

My issue is finally fixed.

Seemed to be a channel issue, I randomly picked new channels and suddenly, both my macs connect right away. I also changed IPV6 to link-local only which didnt seem to help. I left it at that changed the channels updated the settings on the time capsule and that was all that was needed. Very strange thing how it seems certain channels work and others dont...

It seems like we are all treating different problems as the same...which Apple also clearly needs to be aware of. At any rate, the issue I'm having is that I'm always able to maintain a connection, as per my Wifi status, but it's like network traffic isn't allowed to pass through. iChat drops, Safari can't load pages, and even access to network drives/resources fail. It'll sometimes recover in 5 or 10 seconds, sometimes it'll die for a few minutes. The quick fix to disable and re-enable wifi. This is all on the 2.4 GHz C2D Mid-2010 Macbook Pro.

I tried setting ipv6 to "Local Link Only" and seemed to clear it up for a day or so, but now it's back to its old games. If this doesn't get resolved in the next day or two, I presume I'll be forced to go back to Snow Leopard until Apple gets their act together, as this is nearly a showstopper for me.

Thanks for all the suggestions, so far...keep them coming. It's nice to know that the user-base is being tasked with solving Apple's problems. </sarcasm>

I had no issues with SL and wifi. I upgraded my iMac and Macbook's to Lion and then within a day noticed the symptoms many are complaining about with ONLY my iMac. (The Macbook Lion build, my countless iPads, iPhones, and other WiFi enabled devices have all continued to wifi flawlessly.)

I spoke with Apple, researched on the internet, and tried all of the remedies suggested (except I did NOT try a rebuild/fresh install of Lion), all without resolution. Some of those remedies suggest "rebuilding" the wifi profile, including "forgetting" my home network. I did that several times, and sometimes the problem cleared up for hours, and sometimes only minutes. Then, a bit of lightning struck me...I realized that when I "forgot" my home network and went through the rebuild steps, I was never asked for my wifi password. That told me that the procedure to "forget" the wifi network wasn't complete, so I started to research that aspect. I looked in KeyChain, and I found 2 entries for my wifi network. I deleted both of them. I don't know why there were 2 or how they got there. They had somewhat significantly different create dates, but I (*embarrased*) didn't write them down for further analysis, i just deleted them. The next time I went through the connect to wifi steps I was asked for my wifi password, and I am on DAY 3 of wifi bliss (it works.) When I inspect keychain there is only 1 entry for my network, not 2 as there was during the times I was experiencing the wifi drops. Maybe, just maybe, there was a re-authentication process and the 2 entries caused a problem. I really don't have the technical wherewithal to verify that...

I dare not suggest this is *the answer* because I think there could be many contributing environmental issues after the upgrade However, I have not seen the inspection of keychain for wifi password "conflicts" elsewhere so I thought I would offer this up to the community.