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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HDD in laptop's optical bay spins down too soon

I have bought a caddy to place in the optical bay of my laptop, in order to use the original HDD provided with the computer, since I got a way more performant but smaller SSD lodged in the primary ...
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18 views

Lenovo X201 battery management shuts down prematurely

Something is not working with the Lenovo Power Manager software/hardware on my X201T tablet. The computer always shuts down when I am on battery and still have 1.5-2 Hours left of battery life ...
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1answer
29 views

How can we know that our laptop model has capabiliy to protect against overcharging the battery, and is able to set preferences?

How can I know that my laptop model has the ability to protect against overcharging the battery, and whether it has a menu to setup the preferences? Example: this is my model, Lenovo G40 I am ...
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3answers
95 views

Why upscale CPUs consumes more power even when idle?

A core i7 have a tdp around 80W and whereas a N3150 is 6W. My question is what prevents founders to build CPUs with a proportionate consumption with performance. Said differntly, why can I not have ...
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1answer
103 views

Lock when power button is pressed in Windows 8

I have a surface, and it's getting very irritating when it sleeps when I press the power button. Since I use it mostly as a tablet, I'd like it to behave as one, and lock when I press power.
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2answers
294 views

Laptop wakes up from sleep every several hours

I have a new ASUS Zenbook UX305. OS: Windows 10 Home I've figured out that my laptop wakes up from sleep during the night, so i reviewed the event viewer and found out that it happens about 3-4 times ...
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0answers
29 views

Timing out of computer screen

How do I keep the screen from timing out? When I play something on the computer, such as a film or music, the screen times out. How can I extend the active view of the image? I want the screen to ...
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1answer
488 views

Surface Pro 4 doesn't have Processor Power Management options

I just got a Surface Pro 4, and did all the latest updates (firmware updates and 1511). I went into Power Options, created a "Power Saver" power plan, then went into advanced power options to adjust ...
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300 views

How can I figure out what's keeping my monitors from turning off?

For some reason my monitors won't turn off, and the screensaver never comes on - either in Windows, or at the lock screen. I'm on a desktop with two monitors, using an up to date Windows 8.1, drivers, ...
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0answers
23 views

webserver on linux debian down due to power settings (I guess)

I want my webserver to be always operative, instead to find it down after I leave the computer for about 1 hour I am runninng Debian linux through virtualbox in a Yosemite host, what I did this ...
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16 views

Notebook - Quickly change power-plan

On my private Notebook (Dell Inspiron 5000 - Windows 8.1) I could change my power-plans when clicking on the taskbar icon. I could choose between all existing power-plans. Now on Windows 10 I can ...
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1answer
68 views

Unable to change laptop power options

OS: Windows 7 (32-bit) Some time back, I had tried setting the default power plan as 'Balanced', by downloading and doing some changes in the registry. Now I am unable to change the power options, ...
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30 views

Enter Key brings up Battery/Power Manager: Lenovo 530-W7 64bit

Sometimes Windows acts strangely after a few days of usage without a shutdown. Now, hitting the Enter key while in MS.Work or other application, defaults to starting and brining up the Lenovo Power/...
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1answer
119 views

Programmatically read “Turn off hard disk after” value in Windows

I'm looking for a way to programmatically read the current setting of the "Turn off hard disk after" value, located in the advanced power options in Windows 7 and later. I'm aware of the powercfg -...
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0answers
19 views

Make laptop turn on automatically

I have a laptop of IBM X41. I want to use it in a project in making in which it will be used as kiosk. If power goes out and comes back I have to press the power button to turn the computer back on. ...
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0answers
10 views

Possible to set power plan with out affecting brightness?

It is a bit similar to this question, although it don't have a good answer. However I would like to know if this is possible between different power plan, rather than plugged and unplugged.
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1answer
32 views

Windows 7 Power plan not listening

I'm trying to fix my friends windows 7 computer. After about 30-45 minutes the computer screen goes black only when not in use. I have reset the power/sleep setting to default, deleted any custom ...
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0answers
29 views

Windows 10 USB Drive Not Sleep Stays On, i.e the Red Data Light and Stays Spooled Up

I have a Masscool brand USB drive, affectionately called the 8-track, that I swap 4TB HDDs periodically for overnight daily backups. Power options are set to power off HDDs after 10 minutes. The task ...
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0answers
27 views

pc powers on after screen going off

so, i have the following configuration: a pc with a gigabyte gtx 9xx video card, tied through hdmi to a samsung smart tv. pc is running windows 10 problem is, recently (can't figure exactly since ...
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1answer
1k views

Windows 10 changes power management settings

I have a Dell Latitude E5450 running windows 10. I have some problems with my fingerprint reader. Now and then, after a reboot or suspend, the fingerprint reader is not working. Each time when that ...
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0answers
62 views

Can't disable sleep in Windows

Running Surface Pro 1, Windows 10. I have selected the high performance power management plan and set all sleep-related settings to never, disabled password entry on logon screen, set the hidden "...
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0answers
19 views

Is a Windows Power Plan a sum of its options?

For instance, if you were to configure Power Saver and High Performance with identical options, would that result in identical performance profiles? Or are there differences not listed in the options?...
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1answer
30 views

Show more power plans available after clicking battery icon in system tray

I'm using pretty powerful laptops since... forever. I used to switch my power plans a lot to deal with battery energy, heat and fan levels. I was using ThinkPads before they became just ordinary bad ...
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0answers
20 views

Laptop doesn't HYBRID SLEEP properly

My Windows 10 laptop is set to "hybrid sleep" upon power button press. When I press the button, sometimes it goes into sleep mode properly, and an orange LED starts blinking slowly (indicating sleep)....
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0answers
342 views

After Upgrading to Windows 10 Power Settings Ignored

I'm working with a couple of desktop units at work and for whatever reason one desktop unit now decides to ignore all Windows power settings after upgrading (then running a clean install) to Windows ...
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1k views

Stay usb power on after shutdown on windows 10

I have MSI-P45 Diamond motherboard and Windows 10 64bit. I'd like to enable usb ports power after shutdown. If I turn off the PC from Windows they won't stay on but if I press power button after POST ...
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1answer
1k views

Disable laptop screen when lid is closed

I'm on a Lenovo Y50, running Windows 10. I have an external monitor attached (HDMI) and I use the laptop screen as well as the external. Sometimes I want to close the laptop lid and just use the one ...
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1answer
126 views

How To Disable Monitor Power Saving for All Users?

Question: In Linux is there a global configuration that is not KDE/Gnome dependent that will stop external monitors/displays from shutting off? Scenario We have a scenario where monitors / t.v.s, ...
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1answer
44 views

Windows 7: After wake from sleep, Maximum CPU P-State always sets to 5%

Ok, I've been tracing an issue my box is having with Sleep (S3) and the maximum P-State set in the Active Power Plan after waking. After my machine wakes, the maximum P-State of the Active Power Plan ...
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1answer
18 views

Notebook's battery consumption based on OS

I use notebook to do typing, programming, browsing interne, downloading updates and so on. I use the same tasks on both Linux x64 and Windows 7 x64. My internet usage (browsing, downloading OS updates,...
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0answers
259 views

Prevent power plan from changing when plugging in / unplugging laptop

I have a custom power plan on my laptop and I Enable it by doing: Right Click battery icon > Power options > select 'My Custom Plan 1' > close the window Then I plug my laptop in, go back to Power ...
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1answer
54 views

Disable Wi-Fi on GA-F2A88XN-WIFI motherboard?

I'd like to disable the wi-fi hardware (and maybe also bluetooth) on my Gigabyte GA-F2A88XN-WIFI, for power saving purposes. I did not see an option in the BIOS. On the software side, I've already ...
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69 views

How to select devices used for windows idle detection?

In my Windows 10 system I have connected a X52 Pro joystick. It seems to signal activity to Windows because the idle time counter never exceeds few miliseconds (tested with IdleClock http://www....
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1answer
2k views

Windows 10 doesn't shut off properly (power light remains on) after long period of use

I've recently upgraded to Windows 10, but I'm encountering an issue with the shut down of the computer everyday. If I stay on Windows 10 for a long period of time (~2 hours or longer) say doing office ...
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0answers
94 views

What is keeping my Windows 10 laptop from turning off the display?

I recently upgraded my laptop from Windows 8.1 to 10. Prior to the upgrade, and for a period of time following the upgrade, I had observed that the computer was operating correctly, according to the ...
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1answer
29 views

How do I enable turning off monitor in notebook with Windows?

I have Dell Inspiron 14r laptop which is dual-booting Windows 10 and Ubuntu 14.04. I noticed something: In Linux, when you lower the brightness to the minimum, your monitor turns off. But in ...
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1answer
41 views

Power consumption of different computers

I have an old computer dedicated solely to running a lightweight web server running on Ubuntu. This is actually quite a powerful computer but I do most of my work off a newer computer. Recently, I'...
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1answer
337 views

Why won't PC laptop completely power off after upgrade to Windows 10?

I have recently upgraded from Windows 8.1 to Windows 10 and it appears that it mostly successful. By and large I'm pretty happy with the upgrade however there is now a problem with turning off my ...
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3answers
941 views

Laptop shuts down instead of going into sleep mode when I send it to sleep

I'm using an Asus laptop. It's more than a year old. This has been going on for maybe a month. I've looked into all the basic settings but can't find what's causing the problem. Here are the settings: ...
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1answer
47 views

Laptop won't work if it is cold or uses too much power

I have a problem that my computer won't even boot if it's not hot enough or if my graphics card is not underclocked. I decided to check inside for visible broken components, clean dust, replace ...
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1answer
54 views

Windows laptop waking on touchpad click

I have a laptop that keeps waking from sleep. My cat sits on the laptop when it is closed and the screen bends which clicks the touchpad button. I can't turn off the wake setting on my touchpad in ...
5
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2answers
662 views

Screen Saver Won't Activate

I am using a Intel computer stick plugged directly into the HDMI on the TV. Running Windows 10. I'm unable to setup my computer to "auto-lock". In the power settings, I set it to turn the display off ...
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1answer
103 views

Stop Monitor Wake-Up Events Using KDE Plasma 5

I'm using Arch Linux with KDE Plasma 5 desktop environment. Unfortunately, I've been having this odd issue with my monitors waking up after going into screen energy saving. I haven't figured out all ...
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6answers
17k views

Easy way to switch power plan in Windows 10

I've a 27" external monitor connected to my laptop and I use my laptop's screen as secondary. I've both screens turned on while I'm working. When I'm watching movies, I just keep my external monitor ...
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0answers
559 views

Why is TeamViewer setting up a wake timer in the middle of the night and how to disable it?

After upgrading to Windows 10, my PC started waking up at the middle of the night. I have run all the routine checks and made sure that no hardware has the option enabled. However, upon running ...
4
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2answers
4k views

What causes “The speed of processor 0 in group 0 is being limited by system firmware” in the event log?

My Windows 10 event log continually states. In fact, I think my system is slowing down due to this fact. The speed of processor 0 in group 0 is being limited by system firmware. The processor ...
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0answers
260 views

Delay sleep/login page when closing laptop lid on Windows 10?

I want to be able to close my laptop lid, but not have the laptop got to sleep for a set amount of time (e.g. 5 minutes). If I open the laptop in that time, it bring be back to where I was without a ...
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0answers
78 views

Computer shuts down when trying to wake up after going a sleep for a while

I've got a windows 8.1 computer that goes to sleep and wakes up fine in the space of about 30 mins, but if you try and wake it up after that, it shuts down. I think I've tried ever combination in ...
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173 views

Sleep after and Hibernate after in Power Options

In Power Options, when you change a plan's settings, you have the options to change the Sleep after time and Hibernate after time: I have a couple of questions regarding the different scenarios for ...
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1answer
95 views

How to easily toggle to and from High Performance power mode in Windows 8

Windows 7 and 8 have three default "power modes", regarding how much the prioritise speed vs conserving energy: "Power saver", "Balanced", and "High Performance". On a portable machine with a battery ...