Lion WiFi Connection Problem

I've found that this problem appears for me on a brand new iMac that had Lion installed when I purchased it (which I'm presuming was installed over Snow Leopard), and which I then updated to 10.7.1. (Tried resetting smc, pram, the lot. No "alternative" networks for me to delete.) But the problem does NOT occur AT ALL (using the same network and everything) on a MacBook Pro which had a clean install of Lion (erase and repartition) and which was then updated to 10.7.1. So the clean install seems to have made a difference, at least for me.

I agree with jamiana (above) - a clean install of Lion removes this problem, though I suspect that a subsequent "upgrade" to 10.7.1 may mess things up again.

I think Lion is super-sensitive to WiFi interference, and the 10.7.1 "update" just didn't work - made things worse for many.

Until Apple own up and/or work out how to fix it, the best solution I find for now is to continually stream some iTunes music station, or for less bandwidth, use Terminal to continually ping some place, like

ping yahoo.com

Same problem here - my old macbook is running 10.5.8 & has no problems with my wi-fi but my brand new imac with 10.7.1 can't stay connected for more than a few minutes.

I have actually connected the modem/router with an ethernet cable & have run a massive long line through the house to do this. It's just not good enough really.

I am hoping that the more ppl post the more likely it is that Apple will hear us & FIX THIS problem.

We shouldn't have to jump through hoops/ resetting PRAM/security settings etc ... I actually can't call Apple Care as I work & by the time I get home they have been closed for an hour due to time difference - and no weekend support. am I supposed to take a day off from work to talk to Apple?

Not good enough Apple.

Like the maddening flourescent lights of office buildings, the wifi connection flickers on and off quite a bit. Less annoying than the freezes, crashes, delays, conflicts and hang time within apps, Firefox, Safari, Word, Excel, Text Edit, iTunes, Mail ad infinitum.

Also having the same problem with a brand new mid 2011 iMac 21.5" updated to 10.7.1. Tried all the "suggested solutions" but still no dice. The wifi dropping is easily rectified by switching the Airport off and back on but it is an annoying thing to do every few minutes.

New try,

stop use wifi password

creat a new administrator account on mac

stop use dhcp

manual set tcp/ip , dns

looks can do some help

update to 10.7.2 problem still there

after above setting, wifi drops not such frequently

The just decided that those who didn't have a broken WiFi needed the new experience.

My 2009 i5 iMac rarely can find WiFi after sleep, when it does find it it keeps the connection for less than twenty seconds and I have to cycle the WiFi Off/On to correct it

FYI. Those are NOT Apple employee emails. If you send messages to those particular addresses, some poor innocent folks are going to get slammed with nasty emails for no reason

All Apple employee emails are @apple.com

saying you can't do a clean install with Lion is actually not true. You can via the recovery partition that Lion creates

Then you can use the application install disk that can with your computer to reinstall iLife and so on

Hi there,

Has anyone tried this.... i tried this about a week ago and internet has been flying :-)

Someone else posted this... I can't recall who?

I went into my router settings (Thomson Gateway) and changed the channel setting from automatic to manual. I selected channel 12 and the IMAC was fine, but then my MACBOOK AIR wasn,t so I went to another channel that suited both. (You should find the channel setting under home network / interfaces / then up to the left is configurations)

Go to ABOUT THIS MAC, system report, then click on wi-fi and you will have achoice of channels.

hope this helps..

cheers from downunder

I am having a similar problem. I am using a Time Capsule and it seems to be affecting it while in the backup process. I thought this would have been resolved in 10.7.1, but it was not. I've had to resort to hard resetting my computer a few times. Thanks for the post. I'll try some of the solutions below before we get a bug fix.

I found some solution. Before my imac 2011 can't access internet after 5 mins if no action. But 2 laptop and 1 ipad work fine.

Airport no drop and full signal if turn on/off airport it work again but if no action internet go to down.

I try many fix method but not work for me.

Finaly i try disable WMM mode in wireless router (before is enable). Bingo!! my imac internet no drop again. All device is work great.

I use WPA2 but if set to WEP can enable WMM. I don't why but the internet no drop too.

Sorry my english not good. Hope it help.

ok ... thats a QOS (Quality of Service) variant.

My old router have this, but it never had any influence to the connection.

So I think that the real reasons was the WMM thing. Just a lucky event, that disabling this works for you.

Whats the type of router you use?

Sorrry but this not quite responsive but didn't know how else to raise issue. I'm holding back on installinig lion because of all the chatter regarding lion and wifi. Are people who are having these problems (and there appears to be a lot of them) having them with airport extreme or are they connected with other routers?

I'm totally angry, frustrated, tired, bored, disgusted with the neglect of Apple. If I'm being rude, I apologize, but there are no arguments against facts. I see on the Internet a lot of people trying to find a solution to the problem of wifi.

But the questions are: What Apple is doing to solve the problem? Why it does not manifest itself?

For what I see, Apple is COOKing the problem.

Lupunus,

Way to excuse Apple and blame the guy for having an OS upgrade trash his machine.

If there is one thing I have learned in this industry, there is an endless supply of apologists. All your examples of things you learned are items that many would eviscerate Microsoft over. So, LOL to you.

Still trying to understand how changing the length of my wireless password ended my connection problems under Lion. Too bad the iPad, SL, and Windows machines, in the same house hold never had an issue.