Mac OS X Lion WiFi issues

Yup I Couldnt Agree More :/

"Ask to join new networks" has been unchecked all the time. The problem is that after upgrading from SL, all known networks stopped working.

Lion shows our office network as three separate networks, as we have here three base stations.

This is not necessarily related to WiFi stack, as I'm the only one in the office suffering from this problem. My colleagues, who are running Lion do not have any problems with the network.

VVesa wrote:

after upgrading from SL, all known networks stopped working.

This is not necessarily related to WiFi stack, as I'm the only one in the office suffering from this problem. My colleagues, who are running Lion do not have any problems with the network.

VVesa,

there are to hints on that:

1) The quick and easy way:

Delete all the office networks from your "known networks" list and also all related keys from the Keychain Access and join the office network again.

If that wont work...

2) the bit more harsh way:

On that you may eventually delete some files on the Mac because some configuration files may get damaged or corrupt by time, during updates or upgrades and should get deleted.

Switch off wifi on the Mac.

Then go on and delete the files mentioned below.

You will find the files on your system drive (not your home folder) as follow:

(Because you are using Lion, the Library is hidden. You have to use (menu bar) "go to" -> "go to folder" on finder to access them.)

/library/preferences/com.apple.preferences.accounts.plist

/library/preferences/com.apple.preferences.sharing.plist

/library/preferences/SstemConfiguration/preferences.plist

/library/preferences/SstemConfiguration/com.apple.airport.preferences.plist

If there are files in this folders with the same name but additional .orig at the end, delete them too.

It is possible that not all mentioned files are on your system. That will be ok.

The files will get newly created by system on reboot.

For that reboot the machine.

Join your wireless again.

Lupunus

Lupunus,

I made a backup of the files to my destop and deleted them from /Library/Preferences//.

No luck. WLAN works @ home like it did before deleting the files, and @ the office WLAN does not work properly (occasionally cannot get IP of find WLAN).

I'm using fixed LAN and waiting for the 10.7.2 to fix the problem. There's no point in wasting more time on this.

VVesa wrote:

Lupunus,

I made a backup of the files to my destop and deleted them from /Library/Preferences//.

No luck.[...] @ the office WLAN does not work properly (occasionally cannot get IP of find WLAN).

If your colleagues using Lion have no problem to access WLAN at the office there could be a difference in the settings preventing your system from connecting the WLAN.

There could be a problematic startup item too which disturbs the connecting process.

Have you compared the settings with your colleagues?

Lupunus

I'm having the same problem. Upgraded last night from Snow Leopard to lion 10.7.2. I can very briefly connect to the internet through wifi before it drop out and then cannot connect again. My Mac book pro lap top on SL, still connect to the wifi as usual, as well as all my other devices (ipad, iphone, gfs mac book pro).

I call Apple care, they went through many things with me and were unable to fix the problem. I still cannot connect to the internet through wi-fi on lion 10.7.2

Any suggestions?

My wireless in lion x 10.7.2 just updated today seems to be working great so far....

Hi,

I also have an issue with my Wifi on my Mac book air 11 from late 2010. the stangest thing is that after install lion i didn't have any issue, but after coming back from the apple after a screen replacement i am getting the most trouble to connect to my home routeur.

I checked everything and all my other computer/phone/tablet can connect just fine. i even activated a second routeur to check and same issue.

my issue is the following.

Either my mac connect to the wifi but i have a very slow connection and when i ping my routeur i see a lot of ICMP drop with some packet with a very latency (more than 1000).

After deactivate the wifi and reactivate back, the card don't seems to be able to get an IP adress from the routeur (192.168.1.X) and i have the following IP 169.254.163.196 instead. after a little while it finally pick up an IP, but the icmp drop make the connection unusuable.

Only way to resolve it it's to reboot, sometime several times, until i got a connection and then i left a terminal with a ping to my routeur to keep it alive.

This is a very annoying issue and i tried everything i have read so far except replacing the driver for the snow leopard one.

After installing 10.7.2, who didn't solve anything, any tips on how i could resolve this issue?

thanks

Chris

chris_2cayi wrote:

i have the following IP 169.254.163.196 instead.

It's a automatc self asigned IP and means that there is no connection to DHCP server at all.

chris_2cayi wrote:

Hi,

I also have an issue with my Wifi on my Mac book air 11 from late 2010. the stangest thing is that after install lion i didn't have any issue, but after coming back from the apple after a screen replacement i am getting the most trouble to connect to my home routeur.

You should bring your Air back to Apple for repair.

It seems that the antennas (placed around the screen) are damaged or not correctly connected to the logic board after the screen replacement.

Lupunus

Bryce,

What model of Mac are you having problems with?

What is the Make/Model of your wireless router?

When you say the connection drops, do you see the WiFi icon grey out or an excalamation mark in the Wifi icon?

When you are connected to your wireless router (with the 10.7.2 Mac) can you do the following? Open a terminal and do:

sudo /System/Library/PrivateFrameworks/Apple80211.framework/Resources/airport -s

and then

sudo /System/Library/PrivateFrameworks/Apple80211.framework/Resources/airport -I (that is an upper case i)

Please paste the output from both commands into this thread.

I'm on 10.7.2 and have these problems.

With your 2nd suggestion, I find the 2nd two files you mention, but the 1st two simply don't appear anywhere, even when I search with spotlight.

Nonetheless, my wi-fi connects to router, but Safari and Firefox always "time out" while trying to get the net.

Dr V.-

I'm not Bryce, so my prob. is a little different, but I want to try this. My own troubleshooting and hours with Applecare confirm my hardware is good. And parallels running windows on my machine gets to the internet. But Lion (now 10.7.2, problems started for me a while after the 10.7.1 update) can't get to the net on safari or firefox. I can ping, etc. but browsers claim to time out or not find server.

So,

Mac Book Pro (bought with Lion in summer of 2011)

connecting to a Belkin Surfboard (described in .plist as

<key>IE_KEY_WPS_MODEL_NAME</key>

<string>F7D2301 v1</string>

<key>IE_KEY_WPS_MODEL_NUM</key>

<string>1.00.16</string>)

My WiFi always shows it's connected and it must be, since I can surf through parallels. I often run Lion without parallels running (I've never had it as an automatically started program) but this makes no difference in my results.

output from both commands:

SSID BSSID RSSI CHANNEL HT CC SECURITY (auth/unicast/group)

Belkin.3A0D 94:44:52:67:5a:0d -57 1,+1 Y US WPA(PSK/AES/AES) WPA2(PSK/AES/AES)

linksys 00:1d:7e:65:c6:22 -75 6 N -- WPA(PSK/TKIP/TKIP)

2WIRE896 00:26:50:51:6d:39 -84 1 N US WEP

Belkin.3A0D_EXT 22:4e:7f:2f:05:f8 -49 1,+1 Y -- WPA(PSK/AES,TKIP/TKIP) WPA2(PSK/AES,TKIP/TKIP)

#### and then 2nd sudo

agrCtlRSSI: -59

agrExtRSSI: 0

agrCtlNoise: -88

agrExtNoise: 0

state: running

op mode: station

lastTxRate: 65

maxRate: 144

lastAssocStatus: 0

802.11 auth: open

link auth: wpa2-psk

BSSID: 94:44:52:67:5a:d

SSID: Belkin.3A0D

MCS: 7

channel: 1

To me it looked odd that some zeros were missing in BSSIDs, like a string got passed as integer. But perhaps this is not an issue. I don't really know how variables are classed or processed here.

Boy, I wish this had worked for me. My troubles have not changed at all since the 10.7.2 update. I used the combo version, which did you use? Not sure it would make a difference.

Hi everybody,

I have been having the same problems with wifi since upgrading to Lion.

I have a Alumunum MB, late 2008. Done almost everything everyone has posted in this forum. Still no wifi.

Wifi searches for networks, but doesn't see any wifi networks at all. Last week I was able to see a pair of known networks after many resets and deleting .plist files, clean installing Lion, etc, etc etc.... When trying to connect to a known network I get the "connection time out" message. After a couple of times my wifi is dead again.

Firmware is Broadcom, my iPhone3g, iPad2 and my wife's SL MB work flawlessly.

Any advise, WELCOME!

Well here is one issue that I can see right off the bat:

SSID BSSID RSSI CHANNEL HT CC SECURITY (auth/unicast/group)

Belkin.3A0D 94:44:52:67:5a:0d -57 1,+1 Y US WPA(PSK/AES/AES) WPA2(PSK/AES/AES)

linksys 00:1d:7e:65:c6:22 -75 6 N -- WPA(PSK/TKIP/TKIP)

2WIRE896 00:26:50:51:6d:39 -84 1 N US WEP

Belkin.3A0D_EXT 22:4e:7f:2f:05:f8 -49 1,+1 Y -- WPA(PSK/AES,TKIP/TKIP) WPA2(PSK/AES,TKIP/TKIP)

There are two belkin routers doing HT40 2.4GHz in the same space. I really wish AP vendors would not allow HT40 in 2.4GHz because of the limited channel space in the band. HT40 is much better suited to 5GHz band.

You can tell HT40 is active because you can see the channel as 1 +1 (meaning the router is taking up channels 1 to 8 because it is bonding two non-overlapping channels to allow for higher speeds). Just to let you know, Apple does not support HT40 in 2.4GHz because of the limited channel space and how it can affect Bluetooth.

The only good channel that you can use at this point is channel 11.

Another solution would be to get a dual band router that would allow 2.4GHz and 5GHz at the same time. That way you could connect your Mac to the 5GHz band (which seems pretty open according to the scan) and still have a 2.4GHz band in case you have devices that can only use that band.

**

You may also want to change the security to just WPA2 AES. Currently you are using mixed mode WPA/WPA2 but forcing AES on WPA. Since you have locked down AES, you might as well just lock it down to just WPA2 as well.