Questions tagged [power-management]
Questions about with tracking and reducing power-drain for computers or devices.
253
questions
-3
votes
1answer
57 views
Can I completely turn off the fans on a MacBook Pro (0 RPM)
I would like to know if there is a utility to completely turn off the fans.
Currently, when completely idle, fans are showing 2000 and 2100 RPM.
Although this is probably not recommended, I would ...
1
vote
0answers
45 views
Macbook Air 2017 - does not turn on, battery charging and seems to work
I have a 2017 Macbook air that is giving me problems since last month. The laptop when it goes to sleep while not charging won't come back to life.
At first, the SMC reset worked but now that doesn't ...
4
votes
1answer
92 views
My computer wakes up at 5:59:39 every morning. How do I stop that from happening?
For some reason my 2017 iMac running macOS 10.14.6 keeps waking up from sleep at exactly 5:59:39 AM every morning. If I look at the logs using pmset -g log at this time it consistently reports:
2019-...
2
votes
1answer
31 views
Notifications causing screen waking
I recently got a new MacBook Pro (2019 model). With this computer, if the displays are sleeping (I often have an external monitor attached via USB-C dock), they will wake up for a few seconds when a ...
1
vote
0answers
20 views
MacBook battery won't charge but powers on either battery or direct power source
My MacBook won't charge. When I plug the magsafe adapter it doesn't light up (no amber nor green). I tried using a friend's charger to check if the adapter is at fault but the result is the same. So I ...
0
votes
1answer
22 views
Cap energy consumption of processes on macOS
Most of us probably already had this situation: One is tight on battery and trying to save as much energy as possible. Then suddenly a process goes wild and drains the battery by 10 or more percent ...
4
votes
1answer
914 views
MacBook Pro randomly waking up from sleep after Catalina update
Since the upgrade to macOS Catalina 10.15.0, I've noticed that my MacBook Pro is randomly waking up from sleep.
I use the MBP connected to an External display, BT mouse (MX Master), an external ...
1
vote
0answers
41 views
kernel: (AppleSMC) Previous shutdown cause: -6
I have a MacBook pro retina 13-inch, early 2015.
A couple of months ago I got the "service battery notification", now my MacBook is turning off randomly, sometimes repeatedly in a short period of ...
0
votes
0answers
72 views
Macbook sudden black screen & Shutdown
My MacBook pro retina 15" Late 2013 8 gb RAM MacBookPro11,2 A1398 (EMC 2674 ) was shutting down by itself, and when I ran the command in terminal the log it says,
kernel: (AppleSMC) Previous ...
1
vote
1answer
330 views
Brand new MacBook Pro says “Service Battery”
Unpacked a new MacBook Pro 13" yesterday. I've been using it for a couple of hours before plugging it in for the very first time as it told me that it still had plenty of battery power left. I was ...
0
votes
0answers
11 views
Brand New MacBook Pro 2019 13inch shuts down at 53% battery charge [duplicate]
So I just bought a new MacBook Pro today. As I was setting everything up and downloading the programs I use, the Mac suddenly shuts off at 53%. I kept trying to turn it back on with the power button ...
2
votes
0answers
44 views
Macbook 2015 with normal battery won't charge even after SMC
My MacBook won't charge. Here are the things I have done so far:
I tested the MagSafe charger to another laptop to make sure it is not faulty ( MagSafe is working )
I did the SMC reset ( shift + alt +...
1
vote
1answer
93 views
Reset NVRAM, PRAM, and SMC, all in one go from the terminal?
I'd like to run some code, go away and have a coffee and come back to a MacBook with the NVRAM, PRAM and SMC all reset (rather than doing them manually with yoga postures to press all the keys, ...
4
votes
1answer
221 views
Macbook Pro 2018 battery not charging dodocool 7-in-1 hub suspected
I am having a version of the battery not charging issue on my Macbook Pro 2018 (13-inch, Four Thunderbolt 3 Ports). The symptoms are somewhat different from related issues, such as in this post. I am ...
1
vote
0answers
40 views
Frequently Have to Reset SMC to turn on MacBook
So over the last 2-3 weeks my 2014 13 inch MacBook Pro has developed an issue. I have to reset my SMC in order to power it on. This has occurred about 4-5 times. Additionally, my battery is on it's ...
1
vote
0answers
31 views
MBP shuts down at 40%~ battery, and recalibration didn't help [duplicate]
EDIT: I don't think this is a duplicate question. My MBP is only 2 years old and its battery cycle count is only 90.
I have a MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports) with macOS 10.12.6, ...
1
vote
1answer
31 views
Charging suddenly stop when I try to use the device
It's my first time with a mac computer, I have a macbook pro 2011 .
The problem , charger works fine when the laptop is closed or idle, when I start using it like for example opening Finder, simply ...
1
vote
1answer
63 views
How to disable Energy Saver mode when switching to battery to stop background windows hiding?
So, Mojave appears to background all of your windows when you unplug. Then you re-plug and suddenly all your windows are out of order.
The energy saver options don't seem to have anything related to ...
2
votes
2answers
54 views
MacBook Pro sleeps unexpectedly and runs fans at high speed, even after SMC reset
My MacBook Pro (15 in Retina, early 2013, macOS 10.14.5) sleeps unexpectedly, although there is enough charge in the battery. To wake it up, I must connect the power supply. Furthermore, the fans run ...
1
vote
0answers
79 views
Macbook Air Mid 2012 A1466 Power button not working
Thanks for stopping by. As the title states, when I press the power button on the keyboard, nothing happens. This is a ongoing problem I've had for a couple months now and it's starting to get on my ...
1
vote
0answers
18 views
MacBook Pro 2011 battery not detected
My MacBook Pro 2011 battery is not detected. There is no spill of water or whatsoever on my logic board. One day I took out the battery and when I placed it back the problem occurred.
So I tried ...
0
votes
1answer
23 views
MacBook Pro goes into hibernation immediately after login, how do I fix this?
My Mid 2012 MacBook Pro, goes into hibernation immediately after logging in. Battery indicator still shows around 95% charges when it does that. When I plug in and reboot, battery shows 0%.
This does ...
1
vote
0answers
36 views
Mac Wake From Hibernate (not sleep) - prevent asking for password?
I have an old 2011 iMac (OSX 10.12.6) in the kitchen which I want to use as a "kiosk". It can go to sleep and on touching the keyboard I want it to come back on without asking for a password.
Works ...
2
votes
0answers
135 views
Automatically toggle iPhone Low Power Mode on set schedule
Is there a way built-in, using Shortcuts app or other to schedule toggling of Low Power Mode on an iPhone?
1
vote
1answer
154 views
MacBook Pro keep on “unplugging” battery and need SMC/PRAM reset
I recently brought my 2015 13" MacBook Pro to an Apple center to get a screen replacement for Staingate. They did it for free. Before this replacement my MacBook was doing really good actually.
After ...
0
votes
0answers
691 views
What prevents macOS Mojave from sleeping my Mac?
I did some testing about activities which prevent sleep on Mojave:
It seems that when the display shows a moving image, even if on a background app (such as a youtube video mostly stopped by Finder ...
1
vote
0answers
20 views
I have a MBP 2010 and just got a slightly newer one 2012 I needed 16 GB ram and my 2010 could only take 8gb
I had upgraded the 2010 mac to a 500gb ssd and replace the optical drive with a caddy and 2 tb firecuda hdsc hybrid drive . It all works fine on my 2010 mac. So my 2012 MBP came with optical drive and ...
3
votes
0answers
191 views
Is it normal for Mac to make startup sound every morning?
If I'm not using it, about 8:00 every morning my sleeping MacBook Pro (with lid shut) makes a starting up sound (the sound of the hardware, not any system sound). I guess it wakes up by itself.
What ...
1
vote
1answer
264 views
MacBook Pro won't put external display to sleep when idle
I have a Mid-2015 MacBook Pro running High Sierra. I mostly use it as a desktop, in clamshell mode with an external monitor and keyboard.
I just replaced the 24-inch LG monitor that was connected ...
0
votes
0answers
239 views
My MacBook Air (13-inch, 2017) does not go to sleep after Mojave update [10.14.3]
Ever since upgrading to the latest version of Mojave[10.14.3], my MacBook Air (MBA) (13-inch, 2017) refuses to sleep with the lid down in the default settings on battery power. This leads to severe ...
0
votes
0answers
27 views
Automatically change power settings
This question got me thinking:
What are all of the settings you could manipulate with the same command-line application, and what are their codes?
Although I don't frequently run low on battery, it ...
1
vote
1answer
78 views
Can I plug my 15" 2017 MacBook Pro into a USB-C display while using the charger cable?
I've bought myself a Dell U2719DC display, which allows your device to charge when connected via USB C. However the maximum charging ability is capped at 65W, whereas the stock 15" MacBook Pro charger ...
0
votes
0answers
38 views
“Energy Saver” -> “Turn display off after” value restores after reboot, how to fix it?
I have a mac mini:
Since my monitor doesn't play well with it, which takes a very long time to display correctly after system sleep, I changed the "Energy Saver" -> "turn display off after" to "never"...
0
votes
1answer
21 views
Mac screen stays lit on login prompt
My 2013 iMac running Mojave 10.14.3 has had this problem for a number of years and spans a few OS upgrades. When in locked mode, the screen can stay lit indefinitely, until I hit Esc.
Behavior is ...
1
vote
1answer
1k views
Resetting screen brightness setting in touchbar MacBook Pro during boot
Due to a series of unfortunate events, my 2018 15” MacBook Pro found itself out of battery and with screen brightness set to zero.
I should also mention that I have FileVault full disk encryption ...
1
vote
2answers
616 views
How to make a Macbook Pro lock and not sleep when connected to power? [duplicate]
My 2018 MacBook Pro is connected to external displays and peripherals via a Thunderbolt 3 dock.
When I step away from my desk I lock the computer by pressing ctrl+cmd+Q on my external keyboard.
This ...
3
votes
0answers
17 views
Suspend a program when on battery power [duplicate]
I’m doing some long-running, CPU-intensive work. This means that I am tethered to a power outlet at all times.
What I’d like to do is ask macOS to suspend a particular program when I’m on battery ...
0
votes
1answer
240 views
Is this energy usage for safari normal?
I was checking my activity monitor for Safari, and I see this number as its average energy usage. Is it normal?
2
votes
0answers
590 views
What is this “Screen Shot” app using so much battery?
The battery on my MacBook Pro drains very quickly compared to what other people report.
When I'm running Slack, lots of Chrome tabs, and Docker for Mac and everything, that's to be expected. ...
3
votes
1answer
141 views
SMC sensors failure while running on battery
I have problem with SMC in MacBook Air 2016. While running on battery, data from SMC module freezes. In iStat Menus temperatures from sensors, RPMs, current meters and voltage meters from CPU aren't ...
1
vote
2answers
2k views
13" MacBook Pro 2017 randomly shutting down
I bought a new Mac and have had it it for like 1 week now. I noticed it turns itself off at 8% but I wasn't worried. Then it started shutting down on like 17%-20% cca.
When you plug charging cable ...
1
vote
1answer
644 views
How to disable App Nap in 10.13.6?
I'm trying to disable App Nap for Chrome, but I can't find the checkbox anymore. Anyone know how to disable App Nap for a specific app in 10.13.6?
2
votes
2answers
2k views
SMC reset to fix battery not working, but cant be sure SMC reset has taken place
I have had a new battery in my mid 2012 15" macbook pro running 10.11.6
The battery health as monitored through a battery health app downloaded from the mac app store has been deteriorating ever ...
0
votes
1answer
308 views
My SMC keeps corrupting even after I reset it
My SMC on my 2012 mbp keeps corrupting even after I reset it.
It won't wake up, forcing me to open it up, unplug and plug in the battery every once-in-a-while, which is becoming a problem because I ...
1
vote
0answers
134 views
Something is corrupting my SMC, why or what changes the SMC settings?
I asked a question that led up to this: Raise/lower brightness is extremely slow
It works just fine after SMC Reset. But the next day same problem.
It appears that the problem is that something is ...
0
votes
1answer
944 views
MacBook Air 13 (mid 2012) shuts down at 50% battery without warning, SMC chip broken? [duplicate]
Some weeks ago I bought a second hand MacBook Air. The MacBook Air runs fine but always shuts down without any warning at around 40-50% in battery mode. After restarting battery is at 0%. First I ...
1
vote
0answers
26 views
Macbook Air doesn't turn on [duplicate]
I have a 2017 Macbook Air 2017. A week ago I turned it on and wrote my password, then it shut down. I tried to turn on but nothing happened. I read some posts on the Internet and tried the following:
...
4
votes
1answer
1k views
Can't hibernate computer MacOS Mojave, no pmset “standby” option
I have a Mid-2009 Macbook Pro 17 inch (5,2), with MacOS Mojave 10.14 installed. I want to enable hibernation (or standby, or deep sleep, or safe sleep) in order to power off the RAM when in sleep mode....
3
votes
1answer
1k views
Why “wake for network access” does not work when setting CI server
We need to set up a CI server using mac.
We set up our private gitlab server on the cloud and gitlab-runner on a mac at the office. When the mac does not go to sleep it works well. But when it goes ...
1
vote
1answer
245 views
Troubleshooting `InternalPreventSleep`
My MBPr has been draining itself frequently overnight if not plugged in. I noticed today when I had the lid open, it would unlock itself with my Apple Watch - no input from me. I looked in Console and ...
