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0answers
29 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, it drops down to about 3 watts. If I wait for a timeout (set at two minutes) it blanks the screen but keeps using the same amount ...
0
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0answers
22 views

Who wakes processor package from C-state?

There are a lot of strategies to save energy, e. g. Power Management States: P-States, C-States, and Package C-States. Under Linux the modules cpufreq and cpuidle controls the P- and C-state, ...
1
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2answers
37 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, ...
0
votes
0answers
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 ...
0
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2answers
327 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 ...
0
votes
1answer
2k 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. ...
0
votes
1answer
410 views

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 ...
3
votes
1answer
3k 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 ...
0
votes
1answer
150 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 ...
0
votes
1answer
30 views

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 ...
-1
votes
1answer
103 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 ...
0
votes
1answer
77 views

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 ...
0
votes
1answer
2k views

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 ...
0
votes
1answer
638 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 ...
0
votes
0answers
283 views

How to switch between graphic cards on desktop

I am going to build a PC with Nvidia graphics card. The thing is, powerful cards are pretty noisy and hot, even in idle mode. So, i don't want it to work all the time. Is there a way to completely ...
0
votes
3answers
462 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 ...
1
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3answers
4k 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 ...
3
votes
2answers
248 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 ...
1
vote
1answer
126 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 ...
1
vote
0answers
24 views

Can I sleep one of the displays on a dual-monitor setup? [duplicate]

I want to be able to 'put the display to sleep' on one of my two monitors when it isn't needed, so it doesn't distract me or use unnecessary power. Ideally, the display would be asleep, but the OS ...
25
votes
10answers
13k 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 (...
0
votes
2answers
292 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 ...
1
vote
0answers
348 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 ...
0
votes
0answers
4k 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 ...
1
vote
2answers
1k 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 ...
1
vote
1answer
4k 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 ...
0
votes
1answer
531 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 ...
1
vote
1answer
306 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 ...
1
vote
1answer
137 views

How can I turn off the display with the Griffin Powermate in Windows?

I want the display to turn off after a long press onto the Griffin Powermate. The software that Griffin provides for windows allows "opening an application"; but it cannot open the shortcut "C:\...
1
vote
3answers
188 views

Will a UPS switch power off all connected loads in one action?

I am going on vacation and was going to buy a power supply cord with a disconnect switch to power OFF all my equipment, eliminating phantom load. Can I use the OFF/ON switch on my UPS to perform the ...
1
vote
1answer
41 views

Audio playback prevents standby

Playing back audio (actually it's the driver, not the specific application used) keeps my Windows 7 system from going to standby - any way to change this behaviour? While it might be useful in general,...
0
votes
1answer
439 views

Sleep mode in Win7 doesn't work any more (shuts down PC somehow, and taking very long to load system again), battery defect?

UPDATE: So, i figured out that i behaves like i remove battery when sleeping. Like it has no power connection, how could that be? OLD POST: I'm not sure what is wrong, but after putting in "sleep-...
2
votes
1answer
261 views

How efficient is Windows 7 in using battery power as compared to Windows XP in similar power plans?

Windows XP didn't have Aero glass and other visual effects and shadow indexing (for fast search) that probably consume extra power in Windows 7. I wonder if disabling some of those features will save ...
2
votes
1answer
5k views

How efficient is Windows 8 in using battery power as compared to Windows 7 in similar power plans?

I'm very specific about the time my laptop battery can last as it is very important to me. Will my laptop's battery last longer with Windows 8 or Windows 7, both in similar power plans, considering ...
2
votes
2answers
1k views

Windows home server build that is energy efficient

I want to build a home server and I plan to run windows server 2012 essentials. I want to use it for storage, file sharing, dlna to my tv, host a couple of websites (not much traffic if any at all) ...
7
votes
1answer
1k views

Is it possible to power off a PCIe video card/slot? (eg. hot-plug)

I'm looking at building a system that supports VT-d so I can pass through a high powered loud video card to a Xen/KVM/whatever VM (host will be Linux based). However, when I'm not using the VM I want ...
4
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2answers
841 views

Automatically disable devices to save power and mitigate DMA attack in Windows 7

Some OEM include energy saving apps that can switch off certain devices such as webcam or optical drive. Is there any brand-agnostic app out there that can do it? If the list of disabled device is ...
1
vote
1answer
1k views

How to make VGA display go into standby when no computer/laptop connected

At my work most people use laptops, in combination with a stand-alone Dell LCD (connected through a VGA cable). Problem: if you unplug your laptop from the display, the display doesn't go to sleep (...
0
votes
1answer
334 views

lowest achievable watts for decent resolution display?

I have an unusual question. The scenario is onboard computing / entertainment for a live aboard boat with a very tight energy budget. I'm trying to figure out what is the most energy efficient ...
2
votes
3answers
4k views

Making laptop not increase/decrease screen brightness when changing power source

When I disconnect my laptop from AC power, its screen becomes more dim, in order to save battery. When I connect it back to AC power, it becomes bright, because now it's not concerned with battery ...
12
votes
1answer
668 views

Power Options: Turn off harddrive. Effective or dangerous?

I keep a PC running 24x7 as it handles several light (processor-wise and disk-wise) tasks and acts as a jumping point into my network from outside. I'd like to keep it as energy efficient as possible. ...
3
votes
2answers
2k views

Want to throttle CPU on Windows 7 desktop, but it is ignoring Max CPU setting in Power Options

I want to be able to substantially throttle down the CPU on my desktop, which due to space constraints is in our bedroom and the wife is suspending it each night because of the fan noise. I've tried ...
1
vote
1answer
2k views

Device disconnected sound in Windows 7 while monitor is in energy save

When Windows 7 power management turns off my monitor after the set time, it starts repeatedly playing the "Device Disconnected" sound. I know Windows is playing this sound because it no longer senses ...
2
votes
3answers
954 views

Power optimization in Linux

I am working on a traffic surveillance project which performs various image processing tasks with a number of visual sensors and a computing platform. My basic task in the project is the power ...
1
vote
3answers
5k views

Do Aero effects in Windows 7 slow down the computer? [closed]

Do Aero desktop effects in Windows 7 slow down the computer? And does Aero actually cause more CO2 emissions than Windows XP?
8
votes
4answers
2k views

How can I save energy when using a notebook?

I'm using a notebook as my only computer and I'm wondering how I might save the most energy (in terms of my electricity bill). Will it use less energy overall to only plug it in if the battery is low ...
4
votes
2answers
246 views

How can I determine the ecological impact of a computer?

How do I determine or even quantify how much ecological impact my computer has? Are there established ways of doing so, or bodies that do this in whole or in part? I'm thinking of things like the ...
1
vote
0answers
191 views

Trading out 110W processor for 35W processor: how much could I really save?

My current processor is a 110W AMD X2 4600+. For fun, I was looking at a 35W Core i3 2100T. Looking around I couldn't find a direct performance comparison anywhere between the two, but it looks like ...
4
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4answers
5k views

Windows software to show computer's energy usage or battery discharge rate

Is there any software for Windows 7 which can show a computer's energy usage in real-time? I am currently using Battery Bar, which gives an estimated discharge rate, but this is essentially an average ...
1
vote
1answer
59 views

Should I use a server kernel when making a ssh server?

I am setting up my desktop as an ssh server and leaving it at home while I travel and connect with a laptop. Will the server kernel provide any advantages for such a simple use as this? Like energy ...