Wi-fi not automatically connecting to home network upon waking from sleep?

I have El Capitan. None of the fixes work here or elsewhere work. I have tried everything published and my laptop will NOT automatically select the only known network with a known password available. I have to manually select it.

jerry

I am having the exact same problem on the late 2008 MBP

My late 2010 Macbook Air does reconnect but it takes about 30 seconds to do so. Not sure what is going on other then I think maybe the LAN address is being lost and the computer must re established.

I'm having the same problem!

Hi! I have the latest OS X (10.7.2) and it is also behaving like that. Moreover, it does not even connect when I restart it. I have to do it manually each time 😟

Found a solution!!!!

Solution offered by AVRAHQEDIVRA on another post solved the problem:

Macbook Pro Unibody. After upgrading to Lion, my problem concerning WIFI was that I had no more autoconnection to my home netwoork.

To fix the problem was simply to delete the plist file corresponding to aiport i.e

/Library/Preferences/SystemConfiguration/com.apple.airport.preferences.plist

1/ disable airport

2/ delete the plist file

3/ enable airport and select your favorite network again

Bear in mind that this will erase ALL connections in your list. Be sure you remember the passwords to reconnect for the first time afterwards...

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Found this post today and have to report that 10.7.3 hasn't fixed it for me.

Have tried all of the above with no joy.

Any other suggestions anyone?

knutklim wrote:

Found this post today and have to report that 10.7.3 hasn't fixed it for me.

Have tried all of the above with no joy.

Any other suggestions anyone?

The two fixes I've used are (1) set the Energy Saver so that the drive Never sleeps, and (2) go back to using an Ethernet cable and turn the wifi off. The Apple engineers are working on a fix to be included in 10.7.4, which will be out soon (hopefully!).

Hi Tgara, thanks for the advice.

Yes, have reverted to ethernet option. This has the added benfit of allowing me to connect to other computers and printers on the network which the wifi connection does not. Here's hoping that Apple can fix this also while there at it.

It may be a problem with the connection information stored in your network profile.

1. Go to System Preferences > Network.
2. Click the Wi-Fi connection.
3. Click the Advanced... button on the bottom right.
4. Click the Wi-Fi tab.
5. Under Preferred Networks, select your wireless network.
6. Click the - (delete) button.
7. Turn off your Wi-Fi connection.
8. Turn it back on.
9. Select and login to your wireless network. This will re-save your connection under Preferred Networks.
10. Close your laptop and reopen it to test whether it worked.

This worked perfectly for me - spot on!