10.5.4 does not solve airport disconnect problems
Dear List,
Like many here I've suffered the following symptoms:
a/ Airport will connect to network without any problems, and shows 3-4 bars of strength.
b/ The signal will suddenly just disconnect for no apparent reason. Seemingly randomly as it just occurs without any identifiable cause.
c/ Attempts to reconnect will always require to enter the password again.
d/ The dialog box will answer immediately "connection timeout" when it seemingly hasn't even tried to connect
e/ Turning off airport then turning it back on seem to alleviate the problem, but still disconnects randomly about every 5 min or so, sometimes longer.
This is now the 3rd system update where this issue has not been addressed. It seems to me some process is trying to access the keychain or something and simply is denied permission and then returns a 'time-out' error. But as the code is not open source there is no way to know.
In any case this has got to be one of the most annoying problems I've ever had with an apple product. It renders the computer's connection to the internet practically useless, and with that most of the things I do with the computer.
Has anyone noticed any substantial improvement with the latest update? If so, what did you do? I merely installed the update.
Hoping you had better luck,
JJ +
That would be annoying...
Clearly Leopards wireless is sensitive to some conditions that have not yet been identified properly. I know that some people experienced similar problems with 10.4.10 and 10.4.11 too.
Anyhow, I have compiled a list of actions from these forums that have been helpful to some people.
I suggest that you work your way through the list, and see how it goes. Given that you have a MacBookPro, you might want to pay particular attention to item 13.
The length of the list demonstrates that there is no clear single problem. It seems likely that there are a range of issues that have the same consequence, and the hard part is to work out where your issues fit in:
1) Reboot in Safe mode (hold the shift key down whilst starting up). Login to your account and then restart again. Can clear caches and perform occasional miracles. This is a MUST DO trouble shooting step, even if it doesn't lead to an immediate resolution.
2) Turn off IPv6 (Network Preferences, Airport, Advanced, TCP/IP), unless you absolutely NEED IPv6 (which is unlikely) http://discussions.apple.com/thread.jspa?messageID=7311903#7311903
3) Do an SMC Reset. This under-utilised option has been effective for a couple of people on a temporary basis, but I have not seen a permanent solution out of it. http://support.apple.com/kb/HT1411
4) Remove /System/Library/Extensions/AppleAirport2.kext and /System/Library/PrivateFrameworks/AirPortConfig.framework IF they exist. They are remnants from Tiger or earlier, and not used in Leopard. http://discussions.apple.com/message.jspa?messageID=5684223#5684223
5) Delete and reinstall the wireless network you are trying to use. Recreate it in a location other than Automatic. http://discussions.apple.com/thread.jspa?messageID=7327200#7327200
6) Use OpenDNS as a replacement for your ISP assigned DNS servers. (The IP addresses are 208.67.222.222 ad 208.67.220.220). http://discussions.apple.com/thread.jspa?messageID=7243133�
7) Use iStumbler (http://www.istumbler.net/) to check for other networks on the same frequency in the area. Interference seems to be a factor for some situations. http://discussions.apple.com/thread.jspa?messageID=7336681#7336681
8) Change your router to Wireless B/G only rather than N. Or change the "RTS Threshold" and "Fragmentation Threshold" to 2306. http://discussions.apple.com/thread.jspa?messageID=6597226
http://discussions.apple.com/message.jspa?messageID=6597226#6597226
9) Change your the encryption settings on your router. If you are using WPA TKIP, try WPA AES or WPA2 TKIP-AES. http://discussions.apple.com/message.jspa?messageID=7336628#7336628
Some people have found that 64 bit WEP is the only solution that works for them - but this is only one step better than having no security at all. http://discussions.apple.com/thread.jspa?messageID=7322517#7322517 (WEP is definitely NOT recommended)
10) Check/disable your firewall and anti-virus software. http://discussions.apple.com/thread.jspa?messageID=7327931#7327931. If it works, you can re-enable the software selectively.
11) Turn BlueTooth off (it could be causing conflicts). http://discussions.apple.com/thread.jspa?messageID=7325696#7325696 and http://discussions.apple.com/message.jspa?messageID=7387246#7387246. This is a clear winner for some people.
12) Check for "conflicts" in the console (some people have found that Parallels networking was a source of errors) http://discussions.apple.com/thread.jspa?messageID=6933616�
13) Remove Real Player from your system (this primarily seems to be affecting people who use a MacBook Pro). http://discussions.apple.com/thread.jspa?threadID=1549877&tstart=15
14) Delete third party kernel extensions (such as tap.kext and tun.kext). If your Airport works in safe boot mode, this could be a clue that you have something to delete. http://discussions.apple.com/thread.jspa?messageID=7307179#7307179
15) Turn off your Leopard firewall in addition to some of the other steps mentioned above. http://discussions.apple.com/thread.jspa?messageID=7409536#7409536
16) Change your computer name on the network. http://discussions.apple.com/thread.jspa?messageID=7378381#7378381
The last three are not recommended by me. I have included them because some have gained a resolution through them.
17) Archive & Install to 10.5.1. This is not a solution open to those who have purchased their Mac since February 2008. http://discussions.apple.com/thread.jspa?messageID=7367913#7367913. I don't recommend this, as there have been a lot of issues fixed in Leopard since 10.5.1
18) Change the MTU setting to 1392 on airport (the default is 1500). This seems an unlikely solution... http://discussions.apple.com/thread.jspa?messageID=7327455#7327455
19) Restore an old version of IO80211Family.kext to your /System/Library/Extensions/ folder (this is potentially dangerous to the integrity of your OS, but seems to have helped some people). http://discussions.apple.com/message.jspa?messageID=7296202#7296202
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