Questions tagged [power-management]
Questions about with tracking and reducing power-drain for computers or devices.
276
questions
0
votes
1answer
17 views
ipod is not charging
When I connect my iPod shuffle to my computer it is not pulling up the profile that I can put music on normally it will pull up but it not pulling it up for me, and it won't charge it.
Another thing ...
1
vote
1answer
31 views
How to find watt hours of MacBook?
I see the latests Macbook Pro 16" has a 100 watthour battery - how do I find the equivalent stat for my current Macbook given the info under About -> System Report -> Hardware -> Battery ...
1
vote
1answer
34 views
Can “Discrete only” GPU cause slowness?
I have 2 external monitors to my 2017 Macbook Pro v.10.15.6. Sometimes it slows -- the mouse lags badly.
I installed gfxCardStatus and sometimes the menu choice changes from Dynamic switching to ...
0
votes
1answer
27 views
Mac book air is not turning on and getting cricket noise when press power button
My Mac book is not turning on when pressing power button . I can hear a cricket sound when ever I press power button.
Initially it was turning on when I do SMC reset . But now power is full and ...
0
votes
0answers
16 views
MacBook Pro battery not charging error - long term fix [duplicate]
I have a 2018 MacBook Pro 13 inch (the one without the touchbar). Over the past weeks, I have twice faced the situation where the charger is plugged in but the battery is draning and I get a "...
0
votes
0answers
18 views
Odd OS X behavior when it goes to sleep - returned to Login, said it shut down bc of a problem
I have posted something like this before, I run a 2012 MBP with Catalina. The odd behavior is that if I close the lid the machine seems to shut down completely (even with the power connected) and ...
1
vote
1answer
31 views
MacBook Air SMC Update v1.8
MacBook Air SMC Update v1.8
This update addresses a rare issue on some Apple notebooks where a battery that has accumulated more than 1000 charge cycles may unexpectedly shut down or stop functioning.
...
0
votes
1answer
44 views
Why does Automatic Graphics Switching keep re-enabling itself without my involvement?
I disable Automatic graphics switching under Energy Saver, as it significantly slows my Macbook Pro (10.15.5). Yet this checkbox keeps getting re-enabled when I have not touched it!
How can I prevent ...
1
vote
1answer
19 views
My Mac crashes and shuts down when charger is unplugged, not immediately
Hey so my Macbook Pro (Retina 15" 2014 i7 2.6GHz, High Sierra (institute doesn't allow me to update)) is turning itself off randomly, and as far as I've figured out this will only occur when the power ...
2
votes
2answers
528 views
“Battery Health” in macOS Catalina 10.15.5?
I have just installed the macOS Catalina 10.15.5 update on my 11" Mid 2013 MacBook Air. The update is working fine.
The MacBook Air specifications on the Wikipedia page says that this model has a ...
0
votes
0answers
246 views
Apple Diagnostic Result PFM006 and Kernel_Task taking upto 300 % of CPU and Depleted Battery
My Macbook Air (2018) Retina battery has depleted within 130 cycles. I was running Windows via Bootcamp in heavy load, letting it discharge fully and charge repeatedly. If I unplug from power source ...
0
votes
0answers
19 views
MacOs PreventUserIdleDisplaySleep is 1 without any assertion and the computer is not turning off the display
I have noticed that the Apple Display of my docked MBP was on. After a little digging, I found that the assertion for display was on but there was no process claiming it. How can this be possible?
$ ...
1
vote
0answers
23 views
Does booting into windows causes start-up issues such as hibernation?
I am using MacBook Air 2019 running OS X Catalina. For the past few weeks, I have been facing the issue with regard to my mac going to hibernate. This hasn't been the issue since I bought the mac this ...
0
votes
0answers
23 views
MacBook Pro 15-inches display not working: how to isolate the cause of the issue?
On last Saturday I left my MacBook Pro (15-inches display, mid-2012 release) on during the night in order to finish some backup tasks and I scheduled its shutdown for a certain time using shutdown -h. ...
0
votes
1answer
31 views
Macbook Pro 5,1 will only boot after multiple SMC resets
I have a Macbook Pro 5,1 (late 2008) running El Capitan (10.11), which is the latest officially supported OS for that machine. When I turn it off I cannot turn it back on without resetting the SMC ...
-1
votes
1answer
115 views
Reset SMC without keyboard
My MBP (13-inch, 2017, Four Thunderbolt 3 Ports) has been hit by a small object on its keyboard. I was thinking it didn't get any damage, but several keys are not working anymore and the keyboard ...
0
votes
0answers
20 views
MBP retina 2015 won’t power on after SMC reset
I was using my computer while it was plugged in and the light on the Magsafe charging cable was green. I noticed at the top that the battery indicator was at 78% and was not indicating it was charging....
0
votes
1answer
85 views
Black Screen on 13" Macbook Pro 2019/Catalina. Resetting NVRAM/PRAM, SMC does not work
My wife's Macbook Pro suddenly dropped to a black screen with the power still on; keys light up, caps lock light comes on; display is clearly getting power. Holding down the power button kills power ...
1
vote
0answers
44 views
How to stop CorruptPowerlog eating up my disk space?
I am running 10.14.6 (18G3020) on a 2018 MacBook Air.
Every 15 seconds or so a triplet of files is created in /private/var/db/powerlog/Library/BatteryLife/Quarantine. For example
30144 -rw-r--r-- 1 ...
0
votes
0answers
8 views
MacBook Pro 13-inch, Late 2013, shuts down as soon as it gets to lock screen
I've been using my macbook for a long time without disconnecting the charger and usually put on the sleep mode instead of shutting it down. One day randomly it shut down out of nowhere and wouldn't ...
0
votes
0answers
29 views
Weird anomaly on my MacBook Pro
Recently I've encountered a problem, and quite frankly, of course it had to be one of those cases where nothing absolutely helps.
It started around a couple weeks ago, the system was getting random ...
0
votes
0answers
21 views
iMac 21.1 -2012 ( Model 13,1 )
I have problems with my iMac 21.5" -2012 (13.1 model).
The machine is not starting like normal. The fan turns on max from the begining, lasts over 6 minutes and then the system is very slow.
I ...
0
votes
0answers
13 views
iBook G4 PPC goes into random standby
I have set up an iBook G4 PPC to never go into standby.
I have also configured scheduled power off and on.
However, it randomly gets into standby from time to time.
Since I am using it remotely, it's ...
3
votes
1answer
124 views
Difference between charging icons - does it mean anything?
Sometimes I see this:
instead of this:
is there a difference? do they mean different things? One is filled in dark, the other is more transparent - the battery/charge icon..
1
vote
0answers
21 views
How can I check for Power Nap event history?
I'd like to see when my Mac is waking up with Power Nap. How can I check the event history to see when Power Nap is causing my Mac to wake up? Especially interested in wake-up events while on battery ...
1
vote
1answer
74 views
MacBook Pro shows not charging when plugged in
I've got a MacBook Pro (Retina, 15-inch, Mid 2015) and as of today it says "not charging" even when it's plugged in.
The MagSafe connector has an orange light, and the power menu's screenshot is ...
0
votes
1answer
1k views
Safari using significant energy
I am currently using a 2017 Mac Pro touch bar that is still on Mojave 10.14.6. My safari is consistently shown using significant energy on my menu. In my activity monitor, I noticed there are many ...
-2
votes
1answer
1k 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
72 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
223 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
139 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
25 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
2answers
3k 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
320 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
312 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
751 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
14 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
64 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 +...
2
votes
1answer
3k 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
868 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
51 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
33 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
177 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
134 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
139 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
37 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
24 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 ...
2
votes
0answers
203 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?
