Level 1

10 points

Wifi won't turn on since upgrade to Lion

First of all, my apologies if i make alot of gramar/spell errors, english is not my native language.

Yesterday i've upgraded my Snow Leopard installation to Lion on my late 2008 macbook pro and from the beginning i am unable to start my Wifi/Airport card. The menu bar shows the wifi icon but with no signal bars. When i click the wifi icon and press 'Turn wifi on' nothing happens. System profiler shows the airport card and when i look in Console i can see that the system recognizes the wifi card and acknowledge it's mac address.

What i've tried so far:

- I've created another user account

- I performed a clean install on a second harddrive, same problem

- i rolled back to Snow Leopard and the airport card functions as it should be, this rules out a hardware failure

- I've deleted all files in /library/preferences/SystemConfiguration and rebooted

- I've created a new location with only the Airport card under System preferences - Network

- I've made the airport card inactive and active again

I did found some strange messages in Console but they are not very clear: http://imageshack.us/photo/my-images/718/screenshot20110721at102.png/

MacBook Pro, Mac OS X (10.7)

Posted on Jul 21, 2011 3:07 PM

278 replies

Jul 29, 2011 7:49 AM in response to kevinrobers

does the computer from which you copy the plist files have to have the same airport card and firmware? or does that not matter?

Jul 29, 2011 7:58 AM in response to federicofromchicago

That doesn't seem to matter. The files I used came from a 2010 MacBook Pro.

kevinrobers Author

Level 1

10 points

Jul 29, 2011 8:08 AM in response to federicofromchicago

The files i used came from the latest Macbook Pro so i think it doesn't matter but didn't check the airport card and firmware versions

Jul 29, 2011 6:39 PM in response to kevinrobers

I too am having problems with wifi connections after upgrade to Lion from Snow Leopard on my IMac. Repeated turning wifi on and off eventually accomplishes the connection. If I walk away and the computer goes to standby, I loose the connection again. So annoying that I'm considering reinstalling Snow Leopard that was working just fine. This many people having issues and no response from Apple. What's up with that.

Roman_G

Level 1

8 points

Jul 30, 2011 3:24 AM in response to kevinrobers

+ 1

same mid 2008 mbp + lion : /

Jul 31, 2011 6:52 AM in response to kevinrobers

Solved temporary going to system preferences,net, airport, advanced, tcp/ip configure ipv6 to local only.....mine was in automatic.

Jul 31, 2011 2:56 PM in response to kevinrobers

Same issue here. Worked fine for one day then just stopped . I've tried everything mentioned in this thread but nothing changes. Bad, bad timing for me. I sure hope Apple addresses this or I will have to back up to SL. The last line in the specs says it all

Here are the specs on my machine.

Processor 2.4 GHz Intel Core 2 Duo

Model Name: MacBook Pro

Model Identifier: MacBookPro3,1

Processor Name: Intel Core 2 Duo

Processor Speed: 2.4 GHz

Number of Processors: 1

Total Number of Cores: 2

L2 Cache: 4 MB

Memory: 4 GB

Bus Speed: 800 MHz

Boot ROM Version: MBP31.0070.B07

SMC Version (system): 1.16f11

Serial Number (system): xxxxxxxxxxxxxxxx

Hardware UUID:xxxxxxxxxxxxxx

Sudden Motion Sensor:

State: Enabled

Software Versions:

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: 4.0 (400.40)

WiFi Diagnostics: 1.0 (100.26)

AirPort Utility: 5.5.3 (553.20)

Interfaces:

en1:

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

Firmware Version: Atheros 5416: 2.1.14.9

MAC Address: xxxxxxxxxxxxxxxxxxxxxxxx

Locale: FCC

Country Code:

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

Status: Network Service Inactive

kevinrobers Author

Level 1

10 points

Jul 31, 2011 3:03 PM in response to Dchilders001

Hmm sounds like a different problem to me. What exactly did you try? Does your ethernet connection work?

@peterfromwallingford Apple is working on it. Some of us are in contact with an Apple engineer that is looking into it but it takes some time 🙂

Jul 31, 2011 3:34 PM in response to kevinrobers

Ethernet works fine. I've been reading the thread and am waiting on Apple, just wanted to add my specs in case they would help.

Aug 1, 2011 8:29 PM in response to Dchilders001

Any word from anyone? I haven't heard back from my support engineer in several days.

logix812

Level 1

8 points

Aug 2, 2011 5:00 PM in response to kevinrobers

I am having the same issue. If I turn my wifi off and then attempt to turn it back on, it will not turn on. I have to reboot the computer to get it back.

I'm running a Early 2008 MBP 17" 2.5ghz Core 2 Duo under Lion (11A511)

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: 4.0 (400.40)

WiFi Diagnostics: 1.0 (100.26)

AirPort Utility: 5.5.3 (553.20)

Card Type: AirPort Extreme (0x14E4, 0x8C)

Firmware Version: Broadcom BCM43xx 1.0 (5.10.131.36.11)

Aug 4, 2011 10:48 AM in response to logix812

I have this same config and I have the same issue.... it actually started back in Snow Leopard, which I believe is different then many people here have reported. It's the reason I upgraded to Lion in hopes of getting my wifi back. It got to the point where I reboot would "fix" the issue but it never lasted long. Sometimes minutes, sometimes a day.

With Lion Ihad wireless support for a few days, even after sleeping the system. Now it is dead. A reboot seems to have no impact. Just an empty pie slice up by my clock... I want my pie back.

I think if you do some digging you will actually see this has been an issue for Apple for quit some time. not just with Lion. I'm rather disappointed Apple has let it go on this long. It's been nearly a year for me. It was nice to see people posting interactions they had with Apple engineers but that seems to have gone cold now.

Here's my specs:

Software Versions:

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: 4.0 (400.40)

WiFi Diagnostics: 1.0 (100.26)

AirPort Utility: 5.5.3 (553.20)

Interfaces:

en1:

Card Type: AirPort Extreme (0x14E4, 0x8C)

Firmware Version: Broadcom BCM43xx 1.0 (5.10.131.36.11)

Wake On Wireless: Supported

Status: Off

-SK

plax

Level 1

10 points

Aug 8, 2011 5:51 AM in response to kevinrobers

I have the exact same issue. WiFi won't turn on on my Late 2008 Macbook Pro after upgrading to Lion and restarting.

Still no fix for this?

Thanks

kevinrobers Author

Level 1

10 points

Aug 8, 2011 5:57 AM in response to plax

The temporary fix is to get the content from the /library/preferences/SystemPreferences folder of a working mac and replace your own files and reboot. This works until your next reboot. Is anybody still in contact with Apple?

Aug 8, 2011 6:10 AM in response to kevinrobers

I haven't heard anything in over a week from the engineer that was helping me.

I'm going to revert back to Snow Leopard. I'm too frustrated with Lion to care anymore.

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Wifi won't turn on since upgrade to Lion