Wireless Connection lost after sleep: iMac 27-inch

Question

Wireless Connection lost after sleep: iMac 27-inch

When my iMac goes into sleep mode, or logs off after pre-determined time, it loses the wireless connection to the router. I then have to go to the upper right of the screen, select my router from the list of available routers, and force a connection.

Has anybody else experienced the inability to maintain persistent wireless connections?

Thanks!

iMac 27-inch (i5), Mac OS X (10.6.7)

Posted on Apr 5, 2011 7:19 AM

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Answer 1

Apr 7, 2011 6:54 AM in response to gregoryjensen

Trying going to System Preferences > Network and click the "Advanced" button under Airport.

Under the Airport tab in that window, there is a checkbox that says "Disconnect when logging out." Is that checked?

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Answer 2

newcube

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Apr 7, 2011 10:30 AM in response to mberardinelli

Getting the exact same thing on my 2010 i3 21.5" iMac on 10.6.7

Goes to sleep fine.
Wakes up and fails to connect to my router until I manually choose it from the list.

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Answer 3

Apr 7, 2011 10:39 AM in response to newcube

Check the setting I mentioned in my previous post.

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Answer 4

newcube

Level 1

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Apr 7, 2011 10:57 AM in response to mberardinelli

sorry, meant to say that I have not got that ticked.

cheers

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Answer 5

Apr 7, 2011 11:02 AM in response to newcube

Another thing you could try is to go into the Network preference pane and delete the Airport. Then, you can click the "+" sign to create a new one and start from scratch.

If that still does not help, try creating a new user account and see if it happens there. Then you will be able to tell whether the issue is system-wide or confined to one specific account.

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Answer 6

Aug 12, 2011 1:04 PM in response to gregoryjensen

I had the same problem for weeks with my new 27" iMac. I tried resetting p-ram, adjusting network settings, throwing out preferences for network settings - - - everything! Nothing worked. I final called Apple support and they told me to unplug EVERYTHING from the Mac, including power, wait 30 seconds, and reboot.

Works fine now.

Hope that helps!

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