On this dialog the “Allow Bluetooth devices to wake this computer” is a possible problem, but - and this is a big but - if you do what I do and use your MacBook with an external monitor, with the lid closed, and a Bluetooth mouse and keyboard, you’ll probably want to keep this enabled. If you go to System Preferences, then click Bluetooth, then click the Advanced button, you’ll see the following dialog: Possible problem: Bluetooth settingsĪnother possible problem involves your Bluetooth settings. If any of those settings under the Power Adapter or Battery tabs are checked, try un-checking them and then run a test to see if your MacBook is still warm when the lid is closed. Enable Power Nap while plugged into a power adapter (also shown as, “Enable Power Nap while on battery power” under the Battery tab).Prevent computer from sleeping automatically when the display is off.If you have any of these settings enabled, your MacBook may wake up even though the lid is closed and its in sleep mode: One of the settings can be found under the “Energy Saver” area of your system preferences: There are a couple of other possible system preference settings that can also cause your MacBook to wake up even if the lid is closed. I do know that RTC stands for “real time clock,” and my assumption is that these entries refer to background processes that are started by the MacOS version of crontab, but I can’t confirm this yet. The important thing you’re looking for in that output is what comes after “Wake reason.” In my case I saw this over and over again:Īt the moment I don’t know exactly what “Wake reason: RTC (Alarm)” means. 16:19:23.315217-0600 0x3332cbe Default 0x0 0 kernel: (AppleTopCaseHIDEventDriver) AppleDeviceManagementHIDEventService::processWakeReason Wake reason: Host (0x01) 14:23:03.385855-0600 0x32e0a7c Default 0x0 0 kernel: (AppleTopCaseHIDEventDriver) AppleDeviceManagementHIDEventService::processWakeReason Wake reason: Host (0x01) 13:13:41.189154-0600 0x32af8ab Default 0x0 0 kernel: (AppleTopCaseHIDEventDriver) AppleDeviceManagementHIDEventService::processWakeReason Wake reason: Host (0x01) If the MagSafe light flicks on and off, you were done the reset properly.Ĭheck these 5 ways to fix MacBook not going to sleep, and the issue will finally be gone.12:33:39.134535-0600 0x73 Default 0x0 0 kernel: (AppleACPIPlatform) Wake reason: XHC1 Release all keys at the same time and turn on the MacBook.Hold down buttons Shift, Control, Option, and Power at the same time.See if MacBook work fine without external drives or printers attached.
Sometimes USB or FireWire can disable sleep mode.
Close lid macbook no sleep drivers#
Solution No.4: Check the printer and external drivers Open Bluetooth preferences, click Advanced, then uncheck “Allow Bluetooth devices to wake this computer”. Use the appropriate drop-down menus to specify when you want the device to enter into the sleep mode.īluetooth devices such as keyboard or mouse can wake up your Mac. To set the time to enter sleep mode, select Sleep from the drop-down menu.In Hardware section, select Energy Saver.1: Check if the sleep settings are set properly. In this article, you can see 5 ways to fix MacBook not going to sleep.
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