WiFi and other networking problems (MacBook Air)
Like many others on these forums, I’m having terrible problems with network connections on my MacBook Air 11-inch (Mid 2011, running Lion 10.7.3).
WiFi connections are very unreliable, and often impossible to establish.
On my home network I can ‘force’ the MBAir to connect by manually configuring TCP/IP, and DNS settings. I shouldn’t have to do this.
I do not have (and have never had) problems establishing WiFi connections on all the other Macs that are used on our home network (iMac, and MacBook running SnowLeopard, and an old PowerMac that runs Tiger; I also occasionally use my University MacBookPro (10.6.7) without any problems. So this issue is clearly not network related.
If I take the MBAir out on the road (which is why I bought it) then I invariably struggle and usually fail to establish a WiFi connection, even in my University, where the WiFi network functions with my MacBookPro.
My problems with the MBAir are not however confined to WiFi.
Networking with an Ethernet-USB link is equally unreliable. Occasionally the MBAir appears on network but then fails to connect to any servers. Even when it does appear to connect the network, I’m unable to connect/share the MBAir from any other of my Macs. Ethernet cable and network communications are all trouble-free with my University iMac and MacBookPro.
I’m really disappointed with my MacBook Air what’s going on Apple?!
I’ve tried deleting the usual system preference files (com.apple.airport.- , -.network, etc.) but not much has changed. Now at a loss at what to try next .... advice welcomed.
Whatever was causing my endless problems has been resolved. I was very close to returning my new MacBookAir, as nothing would work with respect to networking; WiFi or Ethernet-USB.
As a last resort I reinstalled Lion using the cmd-R - and yipee all networking problems have disappeared.
The MBAir now works just fine, I can chop and change WiFi connections when roaming without problems, and my ethernet-USB connection allows me to interact with my University network.
My solution - reinstall Lion!
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