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- Jun 7, 2011
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Hello
Yesterday my Macbook (intel core 2 duo model) started refusing wifi connections, with various symptoms appearing along the course of my troubleshooting.
There have been no recent software updates, installs or activities that can explain it. Likewise, the routers I have tested are working absolutely fine for all my wifi enabled devices except the Macbook (I have 2 networks, different routers, ISPs, SSIDs - PC's/iphone/ipad/blackberry are connecting fine)
Initially I will get the message:
"Airport does not have an IP address and cannot connect to the internet"
This is usually followed by:
"Airport has the self-assigned IP address 169.xx.xx.xx and will not be able to connect to the internet"
Also, the airport icon bars alternate between 2 & 3 bars frequently, regardless if I am literally 2 feet from the router..
I have spent a few hours following tips on other blogs & forums, and tried the following (most including a reboot):
- Disabling the airport config & preferred networks
- Deleting /Library/Preferences/SystemConfiguration/com.apple.airport.preferences
- WiFi router power-cycle, channel changing, WEP/WPA & disabling encryption, assigning static IP etc
- Rebooting
- Disabling/enabling the Firewall etc.
- Deleting keychains
- Confirming no proxy is set..
- Resetting the system management controller
- Resetting NVRAM
On the (rare) occasion when it appears to assign an address, there is an anomaly - using the Network Utility I've noticed packets are sent & received by the router(s) and I can ping & traceroute external URLs/IP addresses! Yet, it still will not allow connections via any other means (safari, email etc).
Anybody seen this before? I normally ask for help as a last resort as there's usually someone out there with an answer, but heaven knows I've looked...
Many thanks
Yesterday my Macbook (intel core 2 duo model) started refusing wifi connections, with various symptoms appearing along the course of my troubleshooting.
There have been no recent software updates, installs or activities that can explain it. Likewise, the routers I have tested are working absolutely fine for all my wifi enabled devices except the Macbook (I have 2 networks, different routers, ISPs, SSIDs - PC's/iphone/ipad/blackberry are connecting fine)
Initially I will get the message:
"Airport does not have an IP address and cannot connect to the internet"
This is usually followed by:
"Airport has the self-assigned IP address 169.xx.xx.xx and will not be able to connect to the internet"
Also, the airport icon bars alternate between 2 & 3 bars frequently, regardless if I am literally 2 feet from the router..
I have spent a few hours following tips on other blogs & forums, and tried the following (most including a reboot):
- Disabling the airport config & preferred networks
- Deleting /Library/Preferences/SystemConfiguration/com.apple.airport.preferences
- WiFi router power-cycle, channel changing, WEP/WPA & disabling encryption, assigning static IP etc
- Rebooting
- Disabling/enabling the Firewall etc.
- Deleting keychains
- Confirming no proxy is set..
- Resetting the system management controller
- Resetting NVRAM
On the (rare) occasion when it appears to assign an address, there is an anomaly - using the Network Utility I've noticed packets are sent & received by the router(s) and I can ping & traceroute external URLs/IP addresses! Yet, it still will not allow connections via any other means (safari, email etc).
Anybody seen this before? I normally ask for help as a last resort as there's usually someone out there with an answer, but heaven knows I've looked...
Many thanks