The thing is, I can just boot of my external drive which has a backup of my 10.4 system and everything works fine, plus my network cameras are all working fine, so I know the wireless LAN is fine. I get a connection timeout error after just a second or two, which hardly seems like long enough for a timeout. My airport card can see the network, and those of my neighbors, but I am not able to connect to my LAN. "After installing Leopard on my 12" Aluminum powerbook, I am no longer able to connect to my wireless LAN.I was going to replace the router until I heard that others are having problems with Leopard and wireless connections. I have reset it back to factory default, checked for firmware updates, etc. My router is wide open, without and security on it. So, I did a complete reinstall of Leopard (reformatting the hard drive) and the problem remains. The iMac with Tiger works fine, as long as I don't connect to the router with the Mac Book. Every time I try to connect to the router with the Mac Book, it kills the router and I have to reboot it. I upgraded the Mac Book to Leopard and have had nothing but trouble with it connecting since. Both were running Tiger and connecting to my DLink router without any problems. I can't tell what, as I can't get back into either unit even after a hard reset." - Scott Schuckert It seems as though Leopard is trying to set/adjust/upgrade something in the router that it shouldn't and is killing them. Bad router? Swapped in spare FR1104AL workd initially, but then turned on Aiport in Leopard as above. Reinstalled Leopard (Archive and Install) same as above except router still dead after after reset - will NOT come back, for wired OR wireless connections. Turned of Aiport card, reset router, other wireless computers back on line. Rebooted came up as no wireless connection - and other computers lost contact with the Asante router. AirPort Card got turned on during installation processcame up with very low signal strength. "Installed Leopard (upgrade install over 10.4), rebooted.In fact, some users are reporting that their third-party routers are becoming non-functional after Leopard Macs attempt to connect. Problems connecting to routers (Apple Base stations and third-party), dropouts, timeouts A number of users have reported that they are unable to connect to AirPort Base Stations or third-party wireless routers after upgrading to Leopard. ![]() If you are experiencing a similar issue, please let us know. Wireless connection lost after sleep Other readers are reporting an issue where AirPort connectivity is repeatedly lost upon putting the system to sleep then waking it back up. Instead of pulling the files you mention out of /System/Library/Extensions, I simply deleted the /System/Library/Extensions/Caches folder and restarted. "I had a problem with my MacBook Pro Airport card (upgraded with a MacPro "n" card) not being recognized. Since many of the shareware tools for clearing caches through a GUI have not yet been updated for Leopard, you can take a blanket approach and delete the entire following folder: "I get this message in the Console: ERROR: ACInterfaceCreate() no airport interface found for en2 AC interfaceCopyStatus() called with invalid interface."Ĭlear caches Some users have had success with clearing caches to reinstate recognition of built-in AirPort hardware. It sees it is there, and I don't have the AppleAirport2.kext file in the system/library/extensions folder as recommended on Macfixit (the file is not there, I didn't delete it)." Worked fine but on reboot, it won't power on the Airport card in my Mac Pro. "I did an Archive and Install of OS X 10.5. ![]() However, that fix is not universally successful.
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