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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61 views

Which saves more power, core parking or clock down-throttling? [on hold]

(Context): Sometimes I leave my computer turned on for long periods while not really using it (to seed files over torrent, for instance). My CPU is an AMD FX-6350 cpu (6 cores, 3.9 GHz) which is kind ...
0
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0answers
10 views

How to put Pebble in Watch Only Mode? [on hold]

Pebble recently introduced Watch-Only-Mode to save power by cutting unnecessary features when you need prolonged battery life and no charger handy. How would you trigger this mode? Or does it simply ...
1
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3answers
12k views

My laptop will not sleep when I close the lid

I've tried to look into everything I know of but this has stymied me. I have a Lenovo Thinkpad Edge 15" currently running Windows 7. The laptop will not enter sleep mode when I close the lid. When I ...
-1
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0answers
17 views

Lock Windows 10 when the Surface Book power button is pressed

Is there a way to lock Windows 10 when the Surface Book power button is pressed? As is clear from the settings options when following Microsoft's instructions, the only official options for the power ...
0
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1answer
40 views

How to setup the laptop behavior when opening the LID

I'm using Windows 7 When i set my laptop to sleep or hibernate. But when i open the lid the laptop start automatically : this cause a problem for me because when i package the laptop in my hand bag , ...
10
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3answers
7k views

How to disallow USB devices to wake the computer by default in Windows 7

Every time I plug in a new mouse/keyboard or plug an existing one to a new USB port, I have to manually go to the device manager, go to the device's property page, and uncheck "Allow this device to ...
12
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7answers
42k views

Windows 7 Goes to Sleep in conflict with Power Option Setting

My Del Dimension E521 running Windows 7 puts itself in sleep mode each night -- despite the fact that I have chosen a power option that specifies NEVER Each morning I find the monitor blank and I ...
0
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0answers
12 views

is it possible to “reset” the counting mechanism of power manager for battery maintenance (Lenovo)

Lenovo thinkpad provides a power manager software that allows for battery gauge reset. It's a hunch but it seems that there is a counting mechanism every time I "perform reset". In early days when I ...
5
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2answers
109 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 ...
18
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3answers
4k views

Powering down the display in XP with a command

Is there a command to power down the display in Windows XP? That is, a command that causes the video card to stop sending a signal to the monitor until input is received, much as power management does ...
0
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0answers
11 views

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 ...
1
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1answer
3k views

really disable power save in linux wifi

I've got a laptop with an Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34) (using iwlwifi kernel module). Although power_save (a module parameter) is disabled, I can see 802.11 ...
0
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1answer
593 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 ...
3
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6answers
7k 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 ...
3
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1answer
43 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 ...
2
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4answers
13k views

Cannot change power button or lid close action

I have a Samsung 900x laptop and I want to change it so that when I close the lid, nothing happens (I often close the lid to carry it somewhere 10 seconds away, and by putting it into suspend it ...
2
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3answers
7k views

Modify “plans shown on the battery meter”

I always use Power Saver or High Performance. No in between for me. How can I rearrange the plans so that those are the two in the top section?
0
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2answers
72 views

How can I make windows reset the power plan to a chosen one after each restart?

After I start my pc every morning I don't want to check what power plan I am using and comfortably start my favorite game without worrying about whether I left a power saving power plan on. It could ...
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1answer
3k views

Ubuntu 13.10 has no Suspend or Hibernate Options

I have a Lenova Yoga 2 Pro, and I have Ubuntu 13.10 installed. I am having some issues setting the power functions. At the moment I can not suspend or hibernate the laptop. So from Gnome 3.10 I have ...
0
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3answers
42 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
27 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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1answer
37 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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1answer
8k views

Can a faulty battery cause my laptop to shutdown even on AC line? (battery installed AND plugged in together)

Until recently, I experience something rather annoying (and troublesome) with my laptop. It spontaneously shuts down itself without any warning, it restarts. No blue screen, no hanging program, just ...
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7answers
18k views

In Windows 7, why won't my display stay off despite the power settings saying it should?

I'm completely stumped by this. My simple use case is that when I'm in bed, I use a cordless mouse to browse the web, watch videos, etc. - the monitor is across the room. When I'm going to sleep, I ...
6
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2answers
730 views

is it possible to wake up a Linux device at a specific time

I run Debian on an embedded board. I would like to suspend or hibernate the board say at 10 pm and wake it up at 7 am. There is no problem to suspend/hibernate the board by pmi action ...
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1answer
1k 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
25 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 ...
0
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0answers
39 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, ...
0
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0answers
220 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 ...
0
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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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2answers
2k views

Turning display off while playing video file in VLC player

Is there any option native to VLC player on windows to automatically turn off the display when playing a video in it? Could be handy when I want to listen only to audio with the screen off for battery ...
0
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0answers
14 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 ...
0
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1answer
15 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, ...
0
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0answers
20 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 ...
3
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3answers
592 views

Laptop waking up from sleep because of “power button”? (Windows 8.1)

My computer is brand new but has a serious problem - it wakes up from sleep mode on its own in the middle of the night, usually a couple hours after I put it into sleep mode. This problem is ...
1
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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. ...
2
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7answers
13k views

Razer Mouse stays lit up when PC is turned off

I have a Razer gaming mouse which has a really bright red laser light. If I power down the computer (but leave the power outlet on) the mouse still emits light, which is quite annoying. Any idea how ...
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0answers
9 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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0answers
22 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 ...
1
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1answer
43 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 ...
0
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0answers
23 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 ...
0
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1answer
291 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 ...
8
votes
1answer
31k views

Disable “Turn off hard disk after” in windows 7

How can I disable this feature? In the power options apparently I can only choose the minutes and I don't see a "Off" option. If I set it to 0 minutes, it sets itself to 1. For now I set it to ...
0
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0answers
39 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 ...
2
votes
1answer
23 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 ...
2
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4answers
4k views

Close lid to sleep just about and open lid to wake up asap without requiring password if done soon enough

I am sure at some point this tablet-like laptop was doing the thing I've briefly described in the title. That is, within the first couple of months that I've started using this thing. I am using a ...
2
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2answers
2k views

Transcend MTS400 SSD crashes my Acer C720 Chromebook, how to disable SATA power management in Chrome OS?

So I upgraded my Acer C720P Chromebook with a larger Transcend MTS400 SSD. However this SSD has a firmware bug, because of which it is incompatible with SATA power management (ALPM). This Transcend ...
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0answers
17 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 ...
23
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7answers
27k views

My Windows 8 PC wakes up every night around 3 am

I just built a new Windows 8 PC, and started using it a few days ago. Every night, I use Hibernate on the computer before I go to bed. The only way to turn it back on is to hit the Power button. ...
35
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6answers
89k views

What Is Minimum And Maximum Processor State In Windows 7 Power Management?

I am talking about this: What should I set in minimum and maximum? I want good CPU performance but not overheated CPU and fan working like crazy.