Are you suffering from Wi-Fi connection problems since upgrading to OSX Lion?   There are numerous reports around the web complaining about Wi-Fi dropping and also being unable to connect when resuming from sleep.

I’ve seen the problems like this before with Windows laptops before, but this was due to power-save settings in the drivers not working with some access points.

The only tip I’ve found so far is to reboot the laptop (how Windows like!) which isn’t really a solution!    Let us know in the comments if you’re experiencing the same problems, and if you know of any solutions.

I’ll keep this posted updated as I find out more…


Update 1: First tip – check what you have set for DHCP.   Apparently “DHCP with manual address” can cause issues – change it to be basic DHCP

Update 2: Treat this one with caution as you’ll lose preferred network settings, but some people are reporting that if you delete “/Library/Preferences/SystemConfiguration” you’ll be able to connect ok.

Update 3: Another tip relating to local sttings – this one recommends deleting the file “” from within “Macintosh HD -> Library -> Preferences”.   You then need to restart for the change to take effect.

Update 4: This time the fix is to manually enter the DNS servers, using the google addresses of and   There are rumors that the problem may be IPv6 related depending on your router and ISP, however manually setting the DNS servers for the connection fixes this.

Update 5: More information on IPV6 and how you can disable it, if this is the problem is available here :

Update 6: A Poster over at the Mac Rumors forum has reported that they managed to get a refund from Apple over the WiFi stability issue:

We’re unable to confirm this, and there’s no guarantees if you try the same but it might be worth a try?

Let us know in the comments if any of these fixes helps your connection!


Similar discussions over at Apple here (you’re not alone):