Questions tagged [power-management]

Power management refers to the capability of a computer or its operating system to regulate its power usage. This can help achieve cooler and quieter operation, longer-lasting electrical components, and for laptops, longer battery life.

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Laptop Shutdown when placed on Sleep Mode

I've updated my computer about a day ago and this new version had caused me some issues. Although in the settings I've set the computer to go into sleep mode whenever I close the lid or press on the ...
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turn on USB charging windows 10

I would like to charge a phone via usb to a windows 10 machine, specifically a Lenovo m83 tiny. The ports on the front bezel (pictured) sustain power to the phone, but when plugged into a port on the ...
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My laptop freeze or has black screen when I open the lid after suspend

Since when I bought this laptop (Huawei Matebook D14, it has a AMD Ryzen 5 3500U CPU with a Radeon Vega 8 GPU) and installed Linux on it (it's dualbooting with Windows), I have this problem that ...
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Disable wake on lid open for Windows 10

On a laptop with Windows 10, how do I disable 'wake on lid open'? It's surprisingly hard to find answers to this question. My bag's magnets wake up my laptop from sleep, in the bag, randomly I have ...
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Arch Linux prevent lock when running specific application

I'm currently running arch linux with i3. To lock my device, I use i3exit. Furthermore I have xfce4-power-manager installed to manage sleep timers ect. My problem is, that I can't figure out how to ...
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Lenovo G505s throttles for no reason, i have been troubleshooting for the last 2 months

I have a Lenovo G505s laptop that ive used for 8 years. These are the specs: AMD A8-5550M 8GB ram 5200rpm 1TB mysterious harddrive s/n CB26642447 windows Version 10.0.19042 Build 19042 bios version ...
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Application windows all move to main display after screens turn back on

Environment: Windows 10 Pro 20H2 x64 running on MacBook Pro 2019 (bare metal), with an LG 4k monitor, each connected to a CalDigit T3 Plus dock. MBP graphics card is AMD Radeon Pro Vega 16. AMD ...
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Legion 5i with Ubuntu 20.04.2 LTS screen brightness control

I know this question has been asked many times since last year, but I can't seem to find the definitive "Oh, it's been solved" answer. I've had the issue since I bought the Legion 5i. ...
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PC will not automatically turn off screen or go to sleep. “powercfg /requests” shows nothing

I realize this probably has been asked before but I've tried everything in this thread and still nothing has worked: Why won't my computer go to sleep automatically? Summary: PC is no longer going ...
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Lenovo S340 Laptop Windows 10 power/wake-up fail

If laptop lid is closed, and left for sufficient length of time (not certain how long is sufficient), the laptop will not wake up again, irrespective of whether it is connected to power or not. The ...
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How do I tell whether my laptop battery is good?

I have a secondhand Dell Laptop, a Dell E5570. I had to replace the battery because it was bulging, so I bought a replacement battery from eBay. The listing said it's a new Dell 47 Wh NGGX5 battery ...
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Windows 10 Desktop PC will not go to sleep automatically based on set idle timer no matter what I try. What else can I try?

I have a Windows 10 Desktop PC I built recently with all new parts, Windows is fully updated, as are all drivers, BIOS, etc. I had a problem with my PC waking up from sleep randomly at night, and then ...
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SSD: Does frequent powercycling / high number of power on count reduce lifetime?

Frequent power cycling on rotating HDDs decreases lifetime, I know that. Since on SSDs there are no moving parts I would expect that powercylcing them wouldn't reduce their lifetime. So you can easily ...
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How to force Chrome to use discrete GPU for specific range of URLs?

I do a lot of development in the context of html5 canvas on my laptop. It has Intel UHD Graphics and NVIDIA GeForce 2060. When the browser window has focus, the load on the GPU (integrated) increases ...
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if ESXi runs under balanced profile and guest VM runs under low power profile what will be the final result?

I do not have any infrastructure under my control so I am not able to test it and I thought to get the answer to my question here. So, if I set the power profile of esxi server into balanced via BIOS ...
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Power off external disk in Ubuntu, then turn it back on remotely without rebooting

I am remotely managing an Ubuntu 20.04 host that has an external drive attached to it. I am not using the drive very often and I am powering it down to preserve its lifetime (as shown here). However ...
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Did Microsoft hide the 'Power buttons and lid' category by default in advanced power settings starting from version 2004?

I recently just upgraded to Windows 10 version 2004. Before that, I created a power plan in addition to the default one, which is used to keep the computer awake seeding torrents, and doing BOINC ...
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342 views

How to change Power options through registry or through command line?

I want to change powercfg.cpl "Power Options" directly through registry. Specifically I want to change this: To these settings: I am using a desktop computer on alternating current power, ...
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72 views

How To Enable/Disable Battery Saver With PowerShell?

PowerShell can be used to change power plans when moving from AC to battery or vice versa, but can PowerShell enable/disable the Battery Saver option?
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Windows laptop going to sleep even after when I close the lid option selected to do nothing

Earlier my laptop was hibernating after closing the lid for sometime. I had disabled hibernating as an option by referring to this. I also tried looking at the powercfg logs on the command prompt for ...
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Laptop power usage explanation

I have an ASUS ROG STRIX G15. I've killed most of the ASUS software, and am using Throttlestop to control CPU usage. I've undervolted by 75mv I've set the display to 60Hz (rather than the 144Hz it is ...
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How can I edit SYSTEM_POWER_POLICY in Windows 10 registry?

My goal is to edit Windows 10 registry so that Windows 10 ignores CPU usage when it determines whether the system is 'idle'. https://docs.microsoft.com/en-us/windows/win32/taskschd/task-idle-...
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Infamous 0.39 GHz in Windows 10 issue has no fixes?

There is this quite annoying bug, which is probably related to Windows 10, which makes mobile CPUs clock down to 0.39 GHz/399 MHz. Just searching on Google for "0.39 GHz". There are so many ...
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Is there any fix for MoUsoCoreWorker.exe preventing Windows 10 entering sleep?

POWERCFG -requests shows that System32\MoUsoCoreWorker.exe is the reason the computer never sleeps. This article notes that restarting the Windows update service can fix it temporarily. It does clear ...
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Prevent Windows 10 from spinning up hard drive

I am running Windows 10. I have an extra hard drive in my computer that is only being used for backups which runs nightly. There is no swap on the drive and indexing is disabled on that drive so ...
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Does a laptop need to be regularly shut down?

I've recently bought a Lenovo Ideapad Slim 5 14ARE05. Till date, I've always been a PC User. When I was deciding which laptop to purchase, a friend who has a MacBook claimed that he hasn't had to shut ...
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Is it possible to power down the GPU completely under software control

I have been thinking about a new PC build recently which would, mostly, not need a GPU to be active but which, ideally, would have access to one when it needs it. As power consumption is an issue, but ...
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UPS turns itself on

So, I shut down my computer, turned off UPS and turned the extension cord (UPS is connected there) off. After an hour, UPS turned on and started beeping. It has happened to me two times before, but ...
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56 views

AHCI vs RAID ON - would there be an impact on power consumption?

I'm investigating about the AHCI vs the RAID ON modes for operating the internal M.2 SSD drive in my laptop (Dell Latitude 5310). Some references: Dell M.2 FAQ regarding AHCI vs RAID ON, Storage ...
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Arch Linux Nouveau suspend doesn't work

I have a Nvidia GT 210 graphics card and it's using 340xx drivers. When I try to suspend my PC while Nouveau drives are installed my system just freezes. Hard drives stops spinning (I hear them stop ...
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Enable surge requirement for computational power, but low power otherwise

New laptops prolong battery life by going into low performance when running on batteries. I notice this tremendously when running a computational analysis. However, those runs are short, and done ...
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797 views

CAD workstation draws ~200 WATTS but constantly crashes with a 750 WATT PSU. It is stable with a 1000 WATT PSU. Why?

I have a CAD rendering workstation that barely ever draws more than 200 WATT (and then only when under extreme CPU load from doing multiple simultaneous CAD renders), but it frequently crashes when ...
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Windows 10 does not let set screen brightness for in a power plan

I've recently got a brand new laptop with Windows 10 Home edition installed. I haven't had any experience with the OS before, so i might be missing something. In Windows 7 I could manage the screen ...
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24 views

Monitor is preventing PC from recognizing inactivity, but only when it's set as primary

I've been using this fantastic Acer 31.5" 4k monitor for the last 18 months or so on my Windows 10 PC, and in that time, the "sleep/turn off screen after x minutes of inactivity" ...
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2answers
102 views

Shutdown Windows 10 without power off computer

I want to set up my computer such that it boots automatically when the power supply is turned on (power supply is not embedded in the PC). The BIOS has an option that allows to boot automatically but ...
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Prevent Lenovo T480 replaceable battery from complete discharge

I got a Lenovo T480 with two batteries (one internal and one replaceable) of different capacity installed. When I run on battery, the replaceable battery is drained completely (0%) before the Laptop ...
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26 views

Locked out of Windows 10 when screen is turned off (timer in Windows power settings)

Clean install of Windows 10. Lenovo Ideapad 330s When the screensaver comes on, the screen goes black. If I move the cursor within a minute or so I'm okay. If I come to the room after a few minutes, ...
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Linux power management: is it possible to wake up on lid open only and ignore lid close?

uname -a Linux 820g3 5.9.1-arch1-1 #1 SMP PREEMPT Sat, 17 Oct 2020 13:30:37 +0000 x86_64 GNU/Linux In /etc/systemd/logind.conf: If HandleLidSwitch=suspend then laptop goes to sleep on lid close and ...
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500 views

“AC BACK” option in Gigabyte BIOS is greyed out

I want to make my desktop PC turn itself back on after a power outage, so I had a look in the BIOS. There is an option called "AC BACK" which seems to be what I'm looking for, but it's ...
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Put monitors to sleep when screen is manually locked, not when idle

On my desktop running xubuntu I want the monitors to go to sleep when (or shortly after) I lock the screen (pressing the lock in the whisker-menu). I don't want a timer that locks when after idling ...
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135 views

Wi-Fi disconnects after sleep - no power management tab in driver configurations

I am using windows 10, and for some reason probably after last update (didn't noticed exact time) Wi-Fi started to disconnects after sleep. It may still stay connected to the router ("connected, ...
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CPU frequency is locked at minimum after removing battery from lenovo laptop on linux mint 20

I recently have played games in high performance and found my laptop battery is dying so fast. The full percentage went down by 3% when I charged it and I decided to use my laptop without battery. ...
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312 views

Energy consumption drops after closing/opening lid on a notebook with both Nvidia and Intel graphics running Windows 10

My notebook (Lenovo Z710) has an Intel i7-4800MQ and an Nvidia GT 745M, so it basically has two graphics adapters. It is running Windows 10, using the latest drivers (I tried, however, older ones, too)...
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Is it Windows or the battery?

my laptop has an 8 year old battery. my battery didn't charge and i froze it after freezing it, my battery charged again and lasted for 3 hour of normal use and like 2.5 hour of video and sound use. ...
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590 views

My PC doesn’t sleep automatically [duplicate]

My PC doesn’t sleep automatically. The monitor never turned off And the PC is set for 3 minutes to go to sleep, but it doesn't sleep.
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WiFi connection after resume from Hibernate

My Windows 10 laptop uses the following power options for "Wireless Adapter Settings": If I hibernate the laptop and return later, I typically find that the WiFi adapter is no longer ...
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1answer
19 views

Acer Windows 10 laptop takes min to Shutdown / Sleep / Reboot

I have an Acer Inspire 5 running latest Windows 10. I am not sure when exactly, maybe about a month ago, I noticed that it takes a long time (2-3 min) to reboot. Upon close inspection, it seems it ...
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108 views

My PC doesn’t sleep in my plan

My monitor is turned off after 1 mintute,But my computer doesn’t sleep after 1 minute(longer than 1 minute) So what should I do!?
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1answer
46 views

Power & Sleep in Windows 10 doesn't match Power Plan settings

When in the "Power & Sleep" settings in Windows (left), the "Screen off and sleep settings" from the control panel (right) don't match those values: Question 1: Which one is ...
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36 views

Windows 10 Sleep fails from Start menu, but not from idle

My Windows 10 machine has recently (last couple of weeks) started having problems sleeping. If the machine is left idle with no sleep-blocking software, like games, running, it will go to sleep after ...

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