Zapping your Bluetooth prefs can fix Wi-Fi wake from sleep problems for some Mavericks users. Let's figure out why
This past week I brought you a tip about fixing Wi-Fi wake from sleep issues on some Mavericks-equipped Macs. The fix involves deleting a file in your Mac's library folder.
Why it works is still beyond my understanding, but suffice it to say that it's fixed the problem for me, as well as for many of you. Now I'd like to take it to the next step to figure out why the problem is happening.
To understand what's going on, let's understand what we did: We've deleted the com.apple.bluetooth.plist file out of your Mac's Library directory. Files with the .plist suffix are preference lists — this one contains information about what devices are paired with your Mac using Bluetooth.
Apple's Wireless Keyboard, Magic Mouse and Magic Trackpad all use Bluetooth, along with countless speakers, headsets, and input devices from third parties. The .plist file contains information about those Bluetooth devices you've connected to your Mac.
By deleting it, you've caused the Mac to create a new com.apple.bluetooth.plist file, which resets Bluetooth settings to their default state. That means that Bluetooth is kept on.
As you re-pair the devices you use with your Mac, be careful to see if one of them in particular seems to be setting off the wake from sleep problem I've previously discussed. And if there is one particular device causing the problem, let me know what it is here in the comments.
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