Q: Wifi Constantly Dropping in Lion

Hi!

I have MB Air with preinstalled Lion. My Wi Fi connection is not stable (softly speaking). 7.1 update didn`t fix the problem.

to moskovit >

check this thread

http://www.ilounge.com/index.php/backstage/comments/os-x-lion-serious-wi-fi-disc onnect-problems-for-macs-and-solutions/

at the beggining you will find methods and links to fix the Wi Fi problem.

Only it is not the solution, it is a bug that should be fixed by Apple

I was able to fix my Wi-Fi in 10.7.1 by "disabiling" IPV6.  Try changing Wi-Fi to "Link-Local" from "Automatic" on the Wi-Fi adapter.  Would appreciate knowing if this helps others...

to Crash Report >

Didn`t work in my case. MBA os x Lion

That was one of the first things I tried. Didn't help.

What I've done is to start using a USB wifi adapter. Very inconvenient, but effective.

I'm also getting WiFi drops on my new iMac running 10.7.1 - especially after waking from sleep.  My situation appears to be the same os that of Shaunmull (above) in that the Mac is staying connected to the router, but the connection appears as if the ISP has failed, so no apps can access the net.  The problem resolves itself after experimental proddings such as mentioned above.

However an interesting point is that I have a MacBook Pro also running Lion 10.7.1 which has never had this problem; it's only apparent on the new iMac.

Gregory,

Who's USB WiFi adapter are you using and which driver is installed?

I am wondering if this is a driver issue or an Apple WiFi hardware implementation issue.

I have a Late 2011 mini and have not seen the issue at all with either 10.7 or 10.7.1.

It seems that we have verified that people with and without the issue are using the same WiFi chip so a chip design flaw seems unlikely.

Doc

Just remembered - the MBP which doesn't have the problem was given a clean install of Lion (erase, repartition), whereas the iMac with the problem in all probability had Lion installed over Snow Leopard before I bought it.

Doc,

I'm using an EnGenius EUB9603H adapter, which has its own driver of course.

I don't believe we're looking at a hardware problem at all. Many computers (mine included) worked fine with SL. The 10.7 update is what broke WiFi.

Greg

actually lion works fine for except some crash issues which doesn't happen often etc. just saying and mine is a mid-late 2010 imac intel machine

I was "drop free" for about a week with 10.7.1, now the drops are back just like before. Wifi "radar" shows connected, but ping doesn't work. Crazy.

I have a Mid-2007 Macbook w/ 10.7.1 installed. Did a full clean install of snow leopard then upgraded to lion through the app store (not a clean install for lion) I have installed Lion twice and I am still having wifi drop outs. It is definiatly a software issue.

My WiFi Card -

en1:

  Card Type:          AirPort Extreme  (0x168C, 0x87)

  Firmware Version:          Atheros 5416: 2.1.14.9

  MAC Address:          00:1c:b3:b4:24:c7

  Locale:          FCC

  Country Code:          US

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

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

  Status:          Connected

  Current Network Information:

My Macbook information -

MacBook

13-inch Mid 2007

Processor  2 GHz Intel Core 2 Duo

Memory  2 GB 667 MHz DDR2 SDRAM

Graphics  Intel GMA 950 64 MB

Software  Mac OS X Lion 10.7.1 (11B26)

Just a me too... Brand new 27" iMac i7 with 10.7.1

One more thing... When trying to transfer stg via AirDrop to my 2009 MBP or viceversa, after a few megabytes the transfer freezes and i loose internet access on the imac at the same time... HAve to turn off and on wifi again....

On the macbook no wifi issues at all

HiHo,

having the same problem with a MacBook and an (older) iMac I did call Apple Support. I reconfigured the WLAN router and switched from 802.11 n+b+g to 802.11 b+g only... seems to work for the time being. I'll keep my fingers crossed that this will work until there is an update available :-)

Ciao

Michael

wow... a number of hours later... and it is still working.