Q: iMac drops Wifi connection after 10.7.4 update

I just tried your suggestion and with fingers crossed - it is working.

I offer you a very special thank you.

Let us hope it stays working.

Merci!!!

Great

My WiFi still works, and only make a single drop in the past 2 months

Let me know if it keep working?

For everybody else........

Go to SYSTEM PREFERENCES / ENERGY SAVER, and set the COMPUTER SLEEP bar to anything else than 15 min!!

Please reply if it works, thanks

Thomas

Setting it to more than 15 minutes seems to have worked for me as well... So far! :)

I've tried that as well, but it didn't work. On thursday I'm taking my iMac into Stormfront in Newbury. An Apple reseller. They are going to run a diagnostics check on it. Watch this space, I will report back.

Setting your wifi router (e.g. Airport) to use specific channels works perfectly for me. I've posted earlier in this discussion exactly how to check the channels and how to set them.

I've been using this solution for over a month now and I haven't had any problems.

Will this work with my bthomehub

It should - quick Google provided this BT link:

http://bt.custhelp.com/app/answers/detail/a_id/9605/~/how-do-i-change-the-wirele ss-channel-on-my-bt-home-hub

If it supports 5GHz, use that, otherwise try different channels - check which channels other wifi networks are using by option (alt) clicking on the wifi menu in the menu-bar and hovering over each network to see which channel it's using.

Same problem here. Imac 21 mid 2011, connection drops after the display goes to sleep. Getting freaking annoying as I have to manually connect to my wifi everytime I use my computer. Tried deleting plist, creating a new network, but now I will follow the method of increasing the computer sleep timer to 16 minutes. See how it goes!

Obviously there's a bug! Got the same problem as you all guys. Since updated on 10.7.4... it doesn't mather which settings I put on (energy saving settings, first on a list, etc etc). Generally I drop my Mac to resting state (Ruhezustand in german). I actually never shut down my Mac, in prior versions never had a problem with WIFI! And there is certainly no problem with airport/router cause all my other gadgets are in contact.

so far, looking forward to get an other update!

update:

sure, if anything of your "work-arounds" would fix the problem in any way - it doesn't matter for me! Actually I'm just a normal-user. If anything worked before, I'm glad to keep this in future as well!

update 2:

I'm a little bit confused... just found this: they had the same problem in a earlier version (10.7.3 !!!)...:http://support.apple.com/kb/TS4209?viewlocale=en_US&locale=en_US

It has been one day and one day of no drops. Changing the computer sleep timer to 16 minutes worked for me! Real sloppy solution but hey, its works and I am fine w that.

Anybody know what the MCS Index parameter is?

It's the "Modulation and Coding Scheme" index (http://mcsindex.com/) - ignore!

And here I thought it was the thing that powered the DeLorean in Back to the Future... ;)

Hello everybody

I found on Apple Support website a file to fix this problem. I hope that it work for you!!

Have a good day

Gino

http://support.apple.com/kb/DL1501

This is for 10.7.3. Doesnt work for .4. Tried already with no good result.