Questions tagged [power-management]
Questions about with tracking and reducing power-drain for computers or devices.
306
questions
1
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0answers
21 views
SMC is in U mode, not in A mode
On a Late 2008 MacBook Pro with a dead battery, i have a SMC issue that popped out.
My fans are at 100%, no keyboard backlit, the usual SMC story.
I've tried the usual technique from the Internet to ...
0
votes
1answer
29 views
Power Manager not working (Connection Disrupted: Unable to connect to this Mac's Scheduler at: Service unavailable via Bonjour (dns-sd))
I had recently installed the most recent version of Power Manager, but after installing the launchdaemon/agent jobs opening the application gives me the error message "Connection Disrupted: ...
0
votes
0answers
17 views
MacBook Pro 2019 (macOS Catalina) - Is it possible to automatically increase screen brightness to 100% when plugged in?
Currently - when unplugged, the screen brightness decreases
I want to keep this functionality, but in addition I want the screen brightness to automatically increase to 100% when plugged in
Is there a ...
0
votes
0answers
18 views
Downgrade bootrom version on MacPro6,1
Is it possible to downgrade a bootrom on MacPro6,1 to a older version? I have read a bunch about SMCFlasher tool and How to downgrade SMC firmware (which doesn't seem valid anymore) amongst others, ...
20
votes
7answers
3k views
Is there a way to prevent my Mac from sleeping during a file copy?
I'm copying a lot of files (over 700 GB) and it takes hours to complete. Is there a way to keep the Mac from sleeping before the copy process completes? I don't want to sit by the computer and moving ...
-2
votes
1answer
35 views
Disable Fans on MacBook Air 2019
Hi I'd like to disable the fans on my 2019 MacBook Air. Since it doesn't even do smth for Pooling since ist completly passive coolen (https://www.youtube.com/watch?v=iiCBYAP_Sgg, Video from Louis ...
0
votes
1answer
34 views
Prevent application to post PreventUserIdleSystemSleep
Listing processes which keep my MBP awake with pmset -g assertions shows some applications which I positively do not wish to be able to influence power management.
pid 150(coreaudiod): [...
0
votes
3answers
107 views
2 Months old MacBook Pro (Mid 2020) battery only last for 4 hours
I'm new to the world of Apple, I bought a new Macbook Pro, mid-2020, Intel i7, 16GB RAM. I'm a developer, I run apps like VS Code, Sublime Text, Slack, Chrome (Multiple Windows), I play videos/songs ...
1
vote
0answers
20 views
MacBook Pro requires SMC reset after every boot when on battery
Booting my mid2015 15" MacBook Pro (with FileVault2) from battery works as expected – only that it will hibernate immediately after the user has been logged in. Then I have to perform a SMC reset ...
0
votes
0answers
74 views
Why I need to reset frequently SMC controller in my MacBook Pro with touch bar (Intel, T1 Chip)
I have a MacBook Pro with Touch Bar and an Intel processor. I need to reset the SMC controller every time I open the MacBook Pro. It does not start automatically unless I do this.
I've tried many ...
0
votes
0answers
48 views
MacBook Pro battery does not charge when plugged in unless switched off / sleep
Hello Apple Stack Exchange!
Apologies if this is a repeat question, perhaps because everything is a repeat answer as well is why I am here.
I am having a problem with my MacBook Pro (A1398, 15”, early ...
0
votes
1answer
56 views
How could my Mac be turning the screen off when it's set to “never”?
I have a late 2021 unibody Mac Mini, upgraded to Catalina. For some time I have had problems where the monitor will not wake up from sleep even though the Mac is running - I think it's a known bug in ...
0
votes
0answers
14 views
MacBook Pro Mid 2009 17 inch ONLY boots after resetting SMC
I changed the right speaker, which required me to remove the logic board. I put everything back together and it turned on normally. When I was done using it I shut it down. After this I could not boot ...
1
vote
1answer
39 views
How to get SMC version for 2018 Mac mini
I bumped into a problem, when my USB and USB-C ports stopped working (all except 1) when coming out of sleep mode. I could fix this only by SMC reset (unplugging power for > 15 sec), after that all ...
2
votes
0answers
280 views
MacBook Pro crashing when going to sleep
I have a recently purchased MacBook Pro (16-inch, 2019) that crashes when it goes to sleep. It doesn't matter if I send it to sleep manually through the menu or by closing the lid, or if it goes to ...
1
vote
0answers
12 views
Which method of hotspotting consumes the least power from the connected device?
When a MacBook Pro is connected to an iPhone's hotspot through USB-C to lightning, the MacBook Pro will automatically charge the iPhone. This consumes additional power from the MacBook Pro's battery. ...
0
votes
1answer
239 views
Where does the pmset CPU_Speed_Limit variable come from, and how to modify it
The man page of pmset states:
pmset must be run as root in order to modify any settings.
Yet I cannot find out how to alter the CPU_Speed_Limit variable. I'm not a registered Apple developer, but I ...
0
votes
1answer
291 views
Macbook Air Early-2015 Service Recommended Warning [duplicate]
I have a Macbook Air Early-2015 model since 2017.
Like 4 or 5 months ago, I updated from High Sierra to Mojave. Initially there was no problem. But after a few weeks my Macbook started to shutdown ...
2
votes
1answer
165 views
How to put MacBook to sleep using only an attached Windows keyboard?
I have a new MacBook Pro that I leave plugged in and closed because I use an external display, keyboard, and mouse.
My monitor, keyboard, and mouse are also used by my PC.
When I'm finished with work, ...
2
votes
0answers
131 views
How to reflash SMC firmware?
MacPro 2013 (MacPro6,1). The computer wake up by it-self after one or two minutes.
Re-install new OS. Reset Pram, SMC. Disconnect everything except power cord. Wifi disabled.
Auto-sleep after 4 ...
0
votes
1answer
71 views
MacBook Pro 2011 has faulty power button - How do I enable any key or lid open boot settings?
I'm working on an Early 2011 MacBook Pro 13" which suffered a little water damage.
After cleaning the system I can get it to turn on by disconnecting the battery, then reconnecting it and ...
2
votes
2answers
96 views
Why will my MacBook Pro (15" Late 2016) not power on after disabling 'Boot on Lid Open'?
I wanted to disable the boot/power on by opening the lid. To do so, I entered the below command in the terminal
sudo nvram AutoBoot=%03
Post that, I shut down the laptop by going to the Top Left ...
1
vote
2answers
107 views
Macbook not detecting all USB keyboard keys
I have a Macbook Pro 2019. I recently purchase the Corsair K68 RGB keyboard which has a common USB Type-A connector. I used OTG for USB A to USB C.
The first time mac detects the new device. Worked ...
2
votes
1answer
156 views
Is there a way to bypass charge a 2019 MacBook Pro?
Bypass charging powers the computer but it doesn't charge nor discharge the battery.
Can I bypass charge on a 2019 MacBook Pro?
0
votes
1answer
30 views
Is it possible to have the auto display sleep less them a minute some how?
In the System prefernces Energy Saver section you have "Display Sleep" option.
The minimum time is a minute. is it possible to tweak that some how to less then a minute?
Please don't add ...
2
votes
1answer
33 views
Besides the main battery, do any components inside MacBooks rely on any other batteries to operate?
Besides the main battery used to power Apple notebooks, do current MacBooks have any other built-in non-rechargeable batteries that may need to be replaced after a certain period of time? I was ...
1
vote
2answers
276 views
What does this statement about saving battery power on iOS mean?
While reading the iOS 14 guide by Apple here, on page 78, In the Quit and reopen an app section
What does the highlighted statement mean?
Is it that on iOS, the apps don’t close(terminate processes ...
0
votes
1answer
367 views
MacBook shuts down at login screen
I have an early 2015 MacBook Pro. I’ve had the service battery warning for over a year now. The battery lasts like 5min nowadays but I’ve been using it like desktop so it’s always plugged in.
I just ...
0
votes
1answer
41 views
Is it possible for a Macbook Pro to pop out a window and / or give some sound a few minutes before sleeping?
Is there a way to pop out a window and / or to give out some sound a few minutes before it goes to sleep?
There is one warning, but I hope to get another warning a few or a couple of few minutes ...
0
votes
0answers
52 views
DVI (via Thunderbolt) display doesn't sleep reliably
My new Mac Mini (late 2018) has 3 monitors connected - one via HDMI and two Thunderbolt-to-DVI. The two DVI monitors are both HP 2011x, and I had them previously connected to a now-retired Mac Pro, ...
2
votes
0answers
19 views
Keep external monitor connected when computer is locked
On my 2016 MBP with an external monitor connected through DisplayPort, when I lock my computer, the monitor is immediately "disconnected", so when I unlock my computer, it takes up to 15 ...
3
votes
1answer
35 views
Is there a way to have my macbook set its brightness based on it running from battery or from line power?
Basically I'd like to have one brightness setting configured for when I'm plugged in through the adapter and charging the macbook from wall power, vs a lower brightness setting when I'm running off ...
0
votes
1answer
20 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
253 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
99 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
73 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
18 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
30 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
49 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
295 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
877 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
755 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
2k 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
54 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
24 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
69 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
2k 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
46 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
164 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 ...
