My machine is running latest macOS Catalina patch level as:īattery info (the machine is indeed not plugged right now) What makes not much sense to me, since the battery is non-removable. This started out of nothing and is very irritating as most of the times I lost a bunch of work.Īfter said shutdown, the machine only boots back again when the AC cord is attached.Īt first I looked around pmset configs and found nothing abnormal there that could led into this behaviour, digging thru powermanagement logs I found a very troublesome entry: localhost powerd : SMC shutdown cause: 0: Battery disconnected When Im using it on battery and whenever the battery reaches around 15%, the machine simply and abruptly shutdown. Keep your Mac turned on whenever power is available: Select “Start up automatically after a power failure.”Īllow your Mac to wake briefly so users can access shared services (if applicable): Select any of the available “Wake for…” options, for example, “Wake for network access.Im facing a very annoying and odd issue with my MacBook Pro. Put hard disks to sleep: Select “Put hard disks to sleep when possible.” Keep your Mac from going to sleep automatically: Select “Prevent computer from sleeping automatically when the display is off.” Set the amount of time your computer or display should wait before going to sleep: Drag the “Computer sleep” and “Display sleep” sliders, or the “Turn display off after” slider. On your Mac, choose Apple menu > System Preferences, then click Energy Saver. Update your system while it’s asleep: Select “Enable Power Nap while on battery power” in the Battery pane, and “Enable Power Nap while plugged into a power adapter” in the Power Adapter pane.Īllow your Mac to wake briefly so users can access shared services (if applicable): Select any of the available “Wake for…” options in the Power Adapter pane, for example, “Wake for network access.” For most Mac desktops: Keep your display dimmed while using your battery: Click Battery, then select “Slightly dim the display while on battery power.” Put hard disks to sleep: Select the “Put hard disks to sleep when possible” option in the Battery or Power Adapter pane. On your Mac, choose Apple menu > System Preferences, then click Energy Saver, then do any of the following: You can also set your Mac to go to sleep and wake up at a specific time. You can set your Mac to go to sleep after a specified duration of inactivity. Rebooting flushes out your RAM, your computer’s temporary, working memory, keeps apps from tapping into the RAM even when you thought you’d closed them. And you should occasionally reboot to “freshen up” your Mac if it’s becoming sluggish. You need to reboot after a system software. However, there are times when you should reboot. And the Mac laptop will “go to sleep” automatically after a few minutes of not being used. There’s little reason to turn it completely off at the end of the workday. For instance, in my home office, I use my MacBook Pro connected to an LG UltraFine display. Some of us use our laptops while they’re plugged into a power source. Also, when “awakening” a Mac, all running apps and open docs are right where you left them. When you turn on the Mac, everything opens up pretty quickly, whereas when you power it back up after a shut-down, it takes a few seconds. Its state is kept in memory, but other parts are shut down and won’t use any power. In sleep mode, the Mac enters a low-power state. When you shut down your Mac, all your open apps close and macOS shuts down, so the laptop users almost no power. Of course, if your MacBook, MacBook Air, or MacBook Pro is running on battery power, you’ll want to put it to sleep or power it down when it’s not in use to save battery life. Some people leave their Macs running 24/7, while others shut them down the minute they’re done using them. Should you do it every night? Once a week? Never? Let’s consider it. You can power off or shut down your Mac laptop, of course.
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