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 23, 2011 9:02 AM in response to dongsheng

I have the same problem, same Airport and Firmware. How long can we expect the revised firmware to take to come out?

Thanks

kevinrobers Author

Level 1

10 points

Jul 23, 2011 10:34 AM in response to Paulplace

Unclear. For now it looks like we'll have to wait till 10.7.1 comes out and we can only hope that it comes fast and that it i'll fix this problem

miliet

Level 1

0 points

Jul 23, 2011 11:00 AM in response to kevinrobers

I've tried to rename the location as "Airport" and delete the file com.apple.airport.preferences.plist that is in library\preferences\SystemConfiguration and restart the computer. Wifi state appears now as activated and searching wifi nets but after some time is unable to join. I've tried to enter data net manually but it doesn't work too.

kevinrobers Author

Level 1

10 points

Jul 23, 2011 11:37 AM in response to miliet

That's exactly what i have. If you look at System Profiler it will tell you that airport is off even in this state.

Jul 23, 2011 12:02 PM in response to kevinrobers

This exact thing happened with Snow Leopard. I cannot believe it's happened again. Not impressed.

kevinrobers Author

Level 1

10 points

Jul 23, 2011 12:16 PM in response to Paulplace

was it fixed? do you know how? are you experiencing these issue now as well?

Jul 23, 2011 12:23 PM in response to kevinrobers

From memory it was fixed in the second update.

Jul 24, 2011 5:34 AM in response to kevinrobers

Having the same problem here.

Card type:

AirPort Extreme (0x14E4, 0x8D)

Firmware type:

Broadcom BCM43xx 1.0

I remember that I bought this mac at a weird point when apple hadn't announced that it supported n-type wireless - and they provided an online download/purchase to activate n. Is there any way that this problem is related to the weird firmware upgrades apple made?

kevinrobers Author

Level 1

10 points

Jul 24, 2011 7:26 AM in response to kevinrobers

10.7.2 has been released to developers. Strange enough: 10.7.1 was skipped... http://www.ithinkdiff.com/apple-developer-site-osx-lion-1072-seeded-developers/

@frederico can't remember that but i was suprised recently that my mac contains a N standard WLAN card. Didn't know that to be honest

kevinrobers Author

Level 1

10 points

Jul 24, 2011 7:32 AM in response to kevinrobers

Looks like 10.7.2 is only a iCloud update http://hitechanalogy.com/download-mac-os-lion-1072-combo-update-apple-developers / hopefully 10.7.1 will come out shortly after that in some way

kevinrobers Author

Level 1

10 points

Jul 24, 2011 8:49 AM in response to kevinrobers

Just spoke to someone with access to 10.7.2 and it looks like Apple is working on the Airport software.. These are the version numbers in 10.7.2:

Softwareversies:

CoreWLAN: 2.1 (210.1)

CoreWLANKit: 1.0 (100.43)

Menu-extra: 7.0 (700.42)

configd-plugin: 7.1 (710.2)

Systeemprofiel: 7.0 (700.3)

IO80211-familie: 4.1 (410.1)

Diagnostische Wi-Fi-info: 1.0 (100.26)

AirPort-configuratieprogramma: 5.5.3 (553.20)

Jul 25, 2011 6:15 PM in response to kevinrobers

I have a late 2008 MBP and seem to have the same card as several other people:

Card Type: AirPort Extreme (0x14E4, 0x8D)

Firmware Version: Broadcom BCM43xx 1.0 (5.100.98.75.6)

My wi-fi worked for about 5 days after installing Lion, then suddently stopped and I couldn't turn it back on agian. I tried resetting SMC with no luck. I also installed the 10.7.2 dev preview but that didn't help.

I fixed the problem by restoring to my last Lion time capsule backup. Since my wi-fi works again, it seems that there was some kind of setting/software change that caused wi-fi to die? Bizarre, I was just accessing my Time Capsule disk and not doing anything speical when wi-fi died. It's a little scary that it could die again at any time. Anyway, I thought I would share what worked for me. Good luck.

kevinrobers Author

Level 1

10 points

Jul 25, 2011 7:43 PM in response to Jake Jung

I can confirm this! I've tried this yesterday and i had the same experience.

Good to know for all of you: i've received a e-mail from someone at Apple who is looking into this matter and i gave him the link to this topic and offered my help to find the real issue here.

Jul 26, 2011 2:51 AM in response to kevinrobers

After working fine for several hours, my wi-fi in Lion died again. I need to do work on this computer, so for now I have reverted to using Snow Leopard until I can be sure that this issue is properly fixed.

If an update comes out and someone in this thread can confirm that it fixes the issue for them (be sure to restart a couple times), I would really appreciate it if they could post in this thread.

Hopefully we get a fix soon!

miliet

Level 1

0 points

Jul 26, 2011 3:01 AM in response to Jake Jung

I'm in touch with an Apple engineer thas has forwarded me several questions in order to solve this issue. I think the solution is close!!

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Wifi won't turn on since upgrade to Lion