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After Lion upgrade, having network issues after wake from sleep

After upgrading to Lion from 10.6.8 on my MacBook Pro (15-inch, Early 2011), I am unable to connect to the Internet after the computer wakes from sleep. I should rephrase this - I am able to ping IP's and DNS (DNS servers are present) however none of my apps will connect (Safari, iChat, etc) -> they all indicate the Internet is unavailable. I have two Airport Express's running 7.5.2 extending a WiFi network off an Airport Extreme running 7.5.2. This issue is specific to waking from sleep. Any thoughts or suggestions would be appriciated.

Mac OS X (10.7)

Posted on Jul 20, 2011 8:31 PM

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213 replies

Jul 23, 2011 10:51 AM in response to Marco Meneghello

Marco Meneghello wrote:


Slicecom wrote:



Try unplugging your Time Machine drive. That worked for me, but now I have no backups.



Actually, I don't have a Time Machine drive, because I'm not using TM on this machine.


I've got an external USB hard disk, but even if unplugged the problem remains.



Interesting, that means this problem is much broader than we originally thought, and possibly completely unrelated to external HD's. Keep this thread going so Apple actually does something about it!

Jul 23, 2011 12:12 PM in response to Slicecom

Slicecom wrote:


Marco Meneghello wrote:


Slicecom wrote:



Try unplugging your Time Machine drive. That worked for me, but now I have no backups.



Actually, I don't have a Time Machine drive, because I'm not using TM on this machine.


I've got an external USB hard disk, but even if unplugged the problem remains.



Interesting, that means this problem is much broader than we originally thought, and possibly completely unrelated to external HD's. Keep this thread going so Apple actually does something about it!


So, I made some test.... and I was wrong!


With the external drive plugged in the problem occours (both ethernet and wifi).

With the external drive unplugged everything is fine!


I confirm that I'm not using TM and the last time I tested I just ejected the driver on OSX without actually unplugging the cable...


Hope this helps...

After Lion upgrade, having network issues after wake from sleep

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