While Apple’s new OS X 10.7 Lion ushered in a massive host of improvements over the previous versions of its operating system, the launch of Lion was not without its issues and bugs. One of the more frustrating issues for some MacBook Pro owners is that for some reason, some older models of MacBook Pro will have trouble entering sleep mode when the MacBook lid is closed. While this issue may seem minor, potentially millions of users are affected and if the MacBook Pro is placed in an area with poor ventilation – such as a backpack – overheating and other issues can occur. Below we’ll share how to fix this MacBook Pro Sleep Issues with an older MacBook Pro.
Fixing MacBook Pro Sleep Issues
For whatever reason, it seems that the MacBook Pro sleep bug is caused by some issue in the Sharing preferences. It’s possible that some old issue with a previous Snow Leopard or other OS X installation was carried over during the Lion upgrade, or perhaps it’s just a random bug. Either way, the good news is that the fix is rather simple!
Open System Preferences, and click on the “Sharing” icon which is located under “Internet & Wireless”. When this preference panel opens, uncheck everything on the left-hand side under “Service” that is checked, and close System Preferences.
Next, reopen System Preferences and head back to “Sharing”.
You can now check any of the sharing items that you want to turn back on, and close System Preferences again.
Reboot your MacBook Pro, and the sleep issues should be fixed!
It might seem funny, but the fix truly is that simple.
Try a Fresh OS X Install to Cure the MacBook Pro Sleep issue
If tweaking your sharing settings didn’t resolve your MacBook Pro’s sleep issues, you can opt for a complete reinstall of OS X. To do this, you’ll need to either purchase a USB stick with installing from Apple, or you’ll need to create an external recovery drive using the Recovery Disk Assistant. Creating this Recovery Drive will allow you to format your MacBook Pro and reinstall OS X with a brand new, clean install.
The (potentially huge) downside to this method is that you will need to back up all of your files, applications and everything else, and reinstall it all from scratch. Since the underlying bug causing the sleep issue is likely deep in some system preference or another file, doing a Time Machine backup and restore will present the same issues.
A quick warning: ensure that any USB or external drive that you use with the Lion Recovery Disk Assistant is either blank or does not contain critical data, as the tool will overwrite everything on the drive
The Last Resort is Always the Genius Bar
If neither of these solutions worked and you can’t go on with your MacBook Pro suffering sleep issues, there’s only one thing left to do. You’ll need to make an appointment to see a ‘Genius’ at the closest Apple Store or take your MacBook Pro into an authorized Apple repair facility. Let the professionals take a look at your MacBook Pro to try to determine what the cause of the sleep issue might be; don’t forget to let them know all of the solutions you’ve tried before you seek their help.
With a little luck and some tinkering, you will be able to fix your MacBook Pro’s insomnia and allow it to finally get some sleep!