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Bluetooth battery status and sleep mode laptop Pc#
Bluetooth battery status and sleep mode laptop Bluetooth#

If you put your PC into sleep mode and happen not to use if for a few days, the battery will simply deplete, your work will be saved, and the PC will shut down.ĭesktop PCs are a bit different, as they don't have a battery to keep things running and to allow for a smooth shutdown if power is cut. Most people using laptops and tablets feel safe with sleep mode - your place will be resumed no matter what happens. This means that you can grab lunch, run an errand, or even set the computer aside for the night knowing you'll be able to use it again in the morning. But maybe my experience is now outdated information.Sleep mode is best suited for times when you won't be away from your PC for long.

Bluetooth battery status and sleep mode laptop Bluetooth#

However, I know that was not always the case with older versions of macOS and/or Mac hardware, as I used to accidentally have my MacBook wake up in my backpack with the lid closed due to (I believe) a paired Bluetooth device waking it. If the Bluetooth really is powered off when the lid is closed, then the Keyboard Maestro macros would be superfluous. Update: Since I wrote this, Allan has expanded his answer with a link to which makes it seem even more likely that he is correct. To turn Bluetooth on and make it discoverable.Īgain, I think Allan’s argument makes sense, but because I don’t know if there are scanners out there which can detect a device which can receive a Bluetooth signal even if it is not paired with that device, I don’t feel like I can make a definitive statement. usr/local/bin/blueutil -power 1 -discoverable 1

If you regularly use Bluetooth, you could have another Keyboard Maestro macro that runs on wake and does Note that for this to work you must have installed blueutil.īy running /usr/local/bin/blueutil -power 0 -discoverable 0 when your Mac goes to sleep, I would feel 100% confident that no Bluetooth scanner would be able to detect it. How would you do that? Well, one way would be with Keyboard Maestro and a macro which triggers when the Mac goes to sleep: The only way I would feel 100% confident would be if Bluetooth was actually disabled when the Mac goes to sleep. The biggest problem is that I don't know how these BT scanners really work.Ĭan anyone say definitively that there is no tool out there can ever detect a Bluetooth signal from a sleeping Mac? So maybe it would not work with a Bluetooth scanner. On the other hand, the descriptive text in the small print suggests that this only works with keyboards/mice/trackpads which are already paired with the Mac. That seems like might imply the Mac could be open to receive or check for Bluetooth signals. However, I find myself wondering about the setting “Allow Bluetooth devices to wake this computer” (System Preferences » Bluetooth » Advanced) which is on by default. I want to believe that the answer is no for the reasons that Allan suggested about the Mac having to be in discovery or “pairing” mode. Thieves are more likely to be watching your actions rather than trying to scan for radio signals when they break into vehicles.

It can’t override the closed lid it won’t go into closed clamshell mode as you need to have power, keyboard and mouse attached.

The device would need to be already paired to wake it.

your computer would be in listening mode not transmitting.

While it is possible for Bluetooth devices to wake a computer Source: What Happens When You Put Mac Laptops to Sleep?

NOTE: This can be changed in your Bluetooth system preferences, in which you can actually choose to make bluetooth devices power on your computer. It would make no sense for your laptop to continually broadcast Bluetooth signals while sleeping as this would drain the battery.īluetooth is disabled. Even Power Nap, which periodically enables WiFi (networking) to check for emails and such. When your MacBook sleeps (lid closed), Bluetooth is turned off. This is why, in macOS you have to go into Bluetooth settings to do this. This is a mode that answers pairing requests and must be initiated by the user. No, it’s not plausible for thieves to scan for Bluetooth signals to detect sleeping Macs.įor your MacBook (or any device, for that matter) to respond, it must be in discovery mode.