MacOS – mid-2011 Macbook Air changes applications on wake from sleep

macbook promacos

When my new Macbook Air (13" mid-2011, Lion) wakes from sleep (by opening the lid, clicking the mouse or pressing the space bar), it usually wakes to the last application I was using, then changes applications as if I had pressed alt-tab.

Has anyone else observed this phenomenon and
Does anyone know what could be causing it

Best Answer

This is related to the System Preference for when it prompts you for a password when it wakes up. Change it to never, and it goes away (less secure) or always (more secure, but a PITA). Here's the link that helped me:

https://discussions.apple.com/thread/3268136?start=0&tstart=0

Related Solutions

MacOS – Have to reconnect to WiFi every time computer goes to sleep

I had the same issue with my 2011 MacBook Air with Lion, and I think it had to do with having changed security preferences on my preferred wireless network. I went to System Preferences > Network > Advanced > WiFi and deleted all existing Preferred Networks, then re-added them. So far, so good. It joins my preferred network automatically after awakening from sleep mode.

MacOS – Lion – Macbook randomly wakes up from sleep when lid is closed

It is possible to determine what caused the system to wake

Open Console (/Applications/Utilities/Console)
Set the search filter to 'wake'

You're looking for the latest entry that has something like this:
```
Wake reason = EC LID0
```
(In the example above, opening the display clamshell caused the machine to be woken)

Here's a list of wake 'reasons' from OSXDaily

This should shed some light on what is waking the machine, then you can go from there.

Best Answer

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MacOS – Have to reconnect to WiFi every time computer goes to sleep

MacOS – Lion – Macbook randomly wakes up from sleep when lid is closed

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