
#MAC TURN OFF POWER CHIME PRO#
Be sure to follow too, and let us know if you decide to keep the power sound effect around on your Mac.The iconic Mac startup chime played when you power up your computer had been around since 1998, but Apple disabled it in 2016 beginning with that year’s MacBook Pro refresh. Many new MacBook owners have noticed this little feature, but the source of the audio was uncovered by who reports that some Macs will even have a vibrating trackpad with this feature enabled (a new Retina MacBook Pro does not offer that aspect). This will disable the sound effect when connecting a power cable on the MacBook Air, MacBook Pro, and yes, it will also disable the power chime sound effect on the MacBook line as well.
#MAC TURN OFF POWER CHIME MAC OS X#
You can also turn off the power chime sound effect when you connect a power cable to a Mac by issuing a different defaults command string within the Mac OS X Terminal:ĭefaults write ChimeOnAllHardware -bool false killall PowerChime Use the following command to play the power chime sound effect:Īfplay /System/Library/CoreServices/PowerChime.app/Contents/Resources/connect_power.aif Disable the Chime Sound Effect on Power Cable Connect in Mac OS X You can also trigger the sound effect manually, maybe you like the way it sounds or you’re just curious what we’re talking about here. The sound effect will even trigger if the MacBook is sleeping too, though that aspect appears limited to newer hardware with the ability to use PowerNap. Note the battery charging indicator will only display onscreen if there is less than 100% power available with the Mac battery and the Mac is either in sleep mode or the screen is locked. This may be helpful if you’re confused, or you just want to see what it does rather than try it yourself: The brief video below walks through entering the syntax into the Terminal app and then disconnecting and re-connecting a MagSafe adapter to trigger the power sound effect.

If you keep an eye on the battery and energy use menu of Mac OS X and you’ll see the sound triggers at the exact same time as the charging bolt appears on the battery menu item. You’ll hear the familiar power connected / charging sound effect from your iPhone and iPad devices. Now you just have to disconnect your MagSafe (or USB-C) power connector from the Mac, wait a second or two, then reconnect it. This will enable the feature through the defaults command string and simultaneously launch the PowerChime application, the latter tiny app must be running in order for the power chime sound effect to trigger. Re-connect the MacBook power supply to hear the chime.Enter the following command syntax, be sure there are no breaks as you’ll want to fit the entire sequence onto a single line (no it doesn’t matter if it wraps):ĭefaults write ChimeOnAllHardware -bool true open /System/Library/CoreServices/PowerChime.app &.Open the Terminal app, found in /Applications/Utilities/.Disconnect the Mac from the MagSafe power source.Enable Playing a Power Chime Sound Effect on a MacBook Pro & MacBook Air

This also requires Mac OS X Yosemite (10.10.3 or later) as the PowerChime.app does not appear to exist in prior releases of Mac system software. You won’t need to do this on the MacBook line because it makes the sound by default (though you can turn it off on that machine if you want to, more on that in a minute). Because the power indicator is dependent on a battery, this almost certainly requires a MacBook Pro or MacBook Air to function as intended. Enabling the power chime sound effect on a Mac is pretty easy.
