Questions tagged [energy-saving]

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How do I shut down Windows 10 completely at inactitivy?

I would like to make it so that after 3 minutes of inactivity (no touch on a Windows table), the monitor is turned off. This works by setting "Turn off monitor after 3 minutes". Then, after ...
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2 answers
48 views

Why is the green leaf in the energy settings missing and slider is at 50% again after restart?

I click the battery icon in the taskbar and put the slider to the left. The icon in the task bar now shows a green leaf. It looks like this: I restart Windows, and the green leaf is gone. I click the ...
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2 answers
39 views

Laptop Energy Saving When Downloading

I have to download some VERY large files from Microsoft overnight for a few days as I am on a relative low download speed in the UK countryside. However, I am concerned about the energy consumption ...
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How to disable screen unlock on mouse move

I have an openSUSE Leap 15.2 KDE desktop which runs 24/7 but the screen turns on every time my cat jumps on the table :( (: That's why I would like to turn on the screen only on keyboard interaction ...
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Energy saving in Windows doesn't work

I have problems with the energy saving in Windows 10. powercfg.exe /request doesn't show a problem. powercfg.exe /devicequery doesn't list a device (I removed all). I removed the energy saving plan ...
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1 answer
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Windows 10 energy saving mode without power

Until a recent Windows 10 update I have been used to putting my PC into energy saving mode instead of shuting it down. This was to keep all the opened programs and not having to open everything again ...
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50 views

DRAM Self-Refresh not the Lowest Power Mode

I have a DDR3L Samsung DRAM on my Laptop. Based on page 23 of its datasheet, IDD6 or the Self-Refresh current is much higher than IDD2P0, IDD2P1 and IDD3P, which are the Precharge/Active Power-Down ...
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2 votes
0 answers
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Does it require less electricity to hold a zero bit in RAM than a one bit? [closed]

Someone I know posited an idea that I instinctively think (know?) cannot be true, but I can't seem to figure out how to explain why not. The idea is based on the assumption that more electricity must ...
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337 views

Leaving computer monitor on (not standby) and lit overnight

How bad is it to leave an LED monitor lit and on overnight? It will not be in standby mode. The time frame is 6-12 hours of “on”-time, but this could be variable. To avoid burn in, the brightness ...
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1 vote
1 answer
5k views

Power management settings in Windows 10 (and BIOS)

I always found the power management settings and energy saving options very confusing since there are more than one. The first one being the dialog you can open from your taskbar. There is no ...
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How to stop audio changing from monitor to laptop when monitor is off

I have a DELL U2518D and speakers connected to the monitor. The audio uses the HDMI cable. So far so good, but when the monitor goes off (because of the energy saving feature) the audio is ...
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1 answer
668 views

Disable screen shut off for specific software

I have a PC with windows 10 and use it for multiple purposes. One of them is monitoring a finances software — which doesn't need my input most of the time. I know there's a way to stop my screen from ...
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2 votes
0 answers
77 views

Monitors not waking up from hibernate on Linux (Fixed on Windows)

I'm having an issue with waking up my monitors from power saving mode on my Linux systems. First, I'd like to notice that I'm fairly new to Linux, and I'd really appreciate your help. I'm running ...
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6 answers
160 views

Power consumption of online services

Bit of an odd question maybe, but I am considering setting up a server at home and I want to host a couple of websites, a nextcloud, and a plex server. My websites are pretty simple and this way I'll ...
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1 vote
1 answer
75 views

Monitoring my computer's energy's usage - is it too low?

My desktop computer is an i3-2100 with 1 DVD drive, 2 HDDs and 2 SSDs connected to it, as well as a CPU fan and a case fan. All of this is connected to my PC via extension cord (i.e. power bank), ...
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0 answers
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Strange behaviour when using Power Plans

I recently wondered why my Laptop seems to be very slow (this was a verly long time). So I downloaded CPU-Z to check my CPU and saw that ist Clock is just around 998 MHZ, however it should can run at ...
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-1 votes
1 answer
53 views

Requesting the complete guide to lock down/password require windows 10 when inactive [closed]

My win 10 is set to start screen saver after 2 mins and put monitor to turn off monitor after 15 mins. Password is required on resume from screen saver. I want it to work for example incase I forgot ...
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1 vote
2 answers
310 views

win 10 screen lock password overridden when monitor auto sleep

My win 10 is set to start screen saver after 2 mins and put monitor to turn off monitor after 15 mins. Password is required on resume from screen saver. But the result I get if ignoring computer for ...
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8 votes
3 answers
6k views

cannot hibernate anymore (but standby)

for some reasons my Windows-10 desktop PC (HP) cannot hibernate anymore (but standby works fine). PS C:\WINDOWS\system32> shutdown /h Element nicht gefunden.(1168) (element not found 1168) ...
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1 answer
41 views

I need to periodically power up the monitor

At work, I have a really bad monitor (generic trademark with unknown model/manufacturer) which sometimes goes randomly off. It is connected with a VGA cable (not HDMI). I believe that goes to some ...
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0 answers
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Is it possible to prevent Windows to reset many system settings to default after a major update (Fall Creators Update)?

I recently installed the Windows 10 Creators Update on many of my PCs, and as with previous "major" update releases, I noticed that many of the system settings, including things like: Energy options ...
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11 votes
1 answer
4k views

Does raising LCD monitor contrast increase energy usage?

I've got a Dell S23340M - an LCD monitor with an LED backlight, which has built-in options to adjust the brightness & contrast. The monitor features a nifty "Energy Usage" bar that changes as you ...
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1 answer
101 views

What household electrical devices could serve as an appropriate Master for the CE Tech Energy Saving Surge Protector?

I am attempting to use the Energy Saving feature of this surge protector: http://www.homedepot.com/p/CE-TECH-4-ft-8-Outlet-Energy-Saving-Surge-Protector-HDC804GWH/205893722 Using my laptop as the ...
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5 votes
1 answer
3k views

btrfs-transacti writes to disk every 30 seconds

I'm running Ubuntu 16.04.2 LTS with btrfs on 4 8 TB Seagate drives in RAID 1. Every 30 seconds btrfs-transacti shows up in iotop with ca. 80 M/s for 15 seconds, even when the system is not used. The ...
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1 answer
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Can I turn internal storage hard disks on and off individually? [duplicate]

I'm considering building a new Windows-based work PC. Some of my work requires vast amounts of storage. Currently I'm serving that need by using a number of external USB drives. Given that I never ...
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9 votes
3 answers
36k views

Is there any reason *not* to enable 802.3az (Energy-Efficient Ethernet) on a switch?

I have a PoE+ switch (ZyXEL GS1100-8HP) that has a button on the front to toggle IEEE 802.3az compliance. I looked this up and found that it was a power management specification known as "Energy-...
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2 votes
0 answers
235 views

Windows 10 sleeps fine from menu, won't sleep from timeout

I have a power meter on a Windows 10 box. If I sleep from the menu or the power button, it drops down to about 3 watts. If I wait for a timeout (set at two minutes) it blanks the screen but keeps ...
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1 vote
2 answers
154 views

Win 8.1 not going to sleep

I have searched quite a lot already but unfortunately didnt find any solution or hint yet. My problem is NOT that my computer starts/boots itself from standby mode. For this often discussed problem, ...
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0 votes
2 answers
2k views

Windows 10 keeps waking up at night, source unknown, what to do?

I have recently upgraded a Win7 Pro machine to Win10, and since that day, every few days, the computer wakes up at nicht, once at 3:30 in the morning, the other time at 2:30 in the morning. I already ...
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1 vote
3 answers
30k views

How to know how much electric power a laptop is consuming?

On a laptop charger adapter it is written '65 Watt'. When I am using that laptop plugged into an AC socket, does it mean that it consumes 65 watt per second? I think it actually depends on usage. ...
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0 votes
1 answer
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Windows Power Options - Turn off the display - HDMI not saving energy

I recently purchased a BenQ GL2760H Monitor which has both HDMI/VGA/DVI inputs. I have a Dell Desktop with Window 7 which has a built-in Intel graphics card with just HDMI and VGA outputs. I also ...
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5 votes
1 answer
24k views

How to disable a plugged-in PCI-e graphic card on OS level? [duplicate]

I have a server running for which I want to have a possility to access it with a screen connected to VGA (very rarely, most of the time it's accessed via SSH). Therefore I have a PCI-e graphic cards ...
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0 votes
1 answer
391 views

Energy saving mode on startup in Windows 8.1

Everytime I start my Windows 8.1 system, the energy scheme is energysaving. Regardless of what I define as default, what was the last mode or whether a cable is plugged in or not. What can this be ...
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1 answer
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Is it possile to set time before windows disable device for energy saving purposes?

I have a tablet-pc with Windows 8 and dock keyboard. Windows disables dock keyboard after ~10 seconds of downtime by default. I want to increase that time to 60 seconds at least. Is it possible ...
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0 votes
1 answer
155 views

Why does unplugging my laptop from power reduce power consumption?

I want to save unneeded energy. Because of that, I changed my energy settings to power save mode. However, once I switch off the power supply for my laptop, the energy consumption and CPU tact goes ...
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0 votes
1 answer
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Reasons to use adaptive and energy saving power plans

This is Question and Answer topic. After many years of using laptops, desktops and servers I asked myself - why adaptive and energy saving plans exist in desktop and server computers? Why would I use ...
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2 votes
1 answer
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How can I enable the deep RC6 sleep states on an haswell architecture?

If you use iotopyou will see three sleep states. One is called RC6 and the other two are deep sleep states called RC6p and RC6pp. I read the modinfo i915 and saw that one can enable them by passing ...
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0 votes
1 answer
2k views

Wireless or wired LAN: Which consumes less power?

I have a printer that has Ethernet LAN and Wi-Fi WLAN. The printer is seldom used, so I'm interested in minimizing idle power consumption. My Wi-Fi AP is on anyway, so that's not interesting. My ...
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0 votes
3 answers
991 views

Windows 7 screen saver

We have a range of public Windows 7 computers. The computers are always on. When the users are logged on, the screen must not go off and the computer must not sleep. However, when the user ...
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1 vote
3 answers
8k views

How to prevent a laptop from going into sleep in Windows7 32bit in High Performance mode?

When my laptop running Win7 32bit is not used, it always goes into some kind of energy saving mode. The exact behaviour ist like this. When the computer is not use, the screen will go darker and when ...
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3 votes
2 answers
991 views

Does a direct scan without previewing a document save electricity?

My question is very simple and straight. I normally take a preview option while scanning a document in my scanner where sometimes I adjust its boundary and reduce the overall size of the document to ...
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1 vote
1 answer
176 views

Generate daily system load / uptime stats

In order to study my Mac system activities I want to visualize uptime, sleeptime and cpu average during each day. My first guess would be looking at the system logs, but I would like to know which ...
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35 votes
10 answers
88k views

Is it possible to power on/off a monitor using the computer?

I was wondering if it was possible to power on/off a display using a computer connected via HDMI. Let me explain : I want my computer to power off my monitors (not standby mode) when I don't use it (...
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0 votes
2 answers
505 views

how to automate pc shutdown & power off?

How could I automate the nightly shutdown and power off of my computer at the mains. That is aiming to use zero electricity during the night. Requirements Can configure time you want shutdown ...
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1 vote
0 answers
395 views

How to prevent "lock" on screen power-off in Windows 8

If my screen turns off due to power saving settings in Windows 8 the PC gets locked also. Is there a way to delay the locking another minute? I have no screen saver set (where the lock setting would ...
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0 votes
0 answers
5k views

How to enable different ACPI Sleep Modes with Asus UEFI BIOS

I'm using a new asus motherboard which supports ACPI 2.0a, and am running Windows 8. I'm trying to figure out how to maximize energy efficiency and component lifespan. This computer is only used for ...
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1 vote
2 answers
3k views

Why is my hardware switching on a smart power strip if the desktop is off?

I bought a smart power strip to manage my electricity usage at home. I have a large desktop machine that is my main computer during the times when I am at home. I have my main power supply hooked up ...
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  • 508
1 vote
1 answer
5k views

Windows 8 goes into sleep even if it's deactivated

I'm using Windows 8 Pro on my notebook. I set the energy settings to "sleep: never". Nevertheless the notebook goes into sleep mode after some minutes of inactivity. I don't have an external sleep ...
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0 votes
1 answer
551 views

No image after waking up monitor

Quite often then my monitor goes back to power mode after being in power saving mode (which is initiated after defined period of inactivity), there is just black screen, however it seems like ...
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1 vote
1 answer
603 views

Linux CPU energy saving hacks

I have a quad core CPU (Phenom II 945), because sometimes I need performance, but most of the time, 4×800 MHz (the minimal frequency) is still overkill for most usages. So, three questions ...
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