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.
Questions tagged [power-management]
1020 questions
237
votes
6 answers
Should laptops remain plugged in when their battery is 100% charged?
When your laptop's battery is 100% charged, should you leave it plugged in so any battery power doesn't get used, or will that cause overcharging, overheating, etc.? Should the laptop be unplugged when the battery level is 100%?
I'm asking because…
Click Upvote
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votes
7 answers
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.
Boris_yo
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60
votes
7 answers
Is turning off hard disks harmful?
I set Windows 7 to turn off hard disks after 20 minutes of nonuse, which it does a really good job at - it seems to turn off individual hard disks that have been idle for 20 minutes exactly. When I access a drive that I haven't used in 20 minutes,…
bobobobo
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59
votes
5 answers
How do you check how much power a USB port can deliver?
Some laptops have a special USB port that can deliver more power than the other ones. However it is not always easy to identify which one is the good one, nor how much power it can deliver.
So is there a good way to figure it out? I'm open to any…
Peltier
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45
votes
13 answers
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 on and turn off the lid of the laptop.
I've…
45
votes
5 answers
PC waking from sleep for unknown reason
I recently started experiencing an issue with my PC, which runs Windows 10 Pro. It wakes from hibernation at seemingly random times. I have done the following to try and troubleshoot the issue:
Turn off wake timers
Disable all peripherals from…
Cas
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42
votes
1 answer
What's Keeping My Computer Awake?
First the question; How do I figure out what is preventing my Windows 7 computer from going into sleep mode?
Second; some background...
I've been struggling with this for a few days and am utterly perplexed. I setup sleep mode on my Windows 7 PC a…
phantomdata
- 999
41
votes
4 answers
Change Behavior of Linux Power Button
I have a headless linux mint machine that I use for a file server and other things. It's been working great for me for a few years, but there's one issue - my cat likes to hang out on top of it, and when she climbs off and on she occasionally steps…
schizodactyl
- 513
36
votes
5 answers
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 screen. When I close the laptop lid, the screen…
AAA
- 461
36
votes
10 answers
What is the hotkey to put my Windows to sleep?
My keyboard doesn't have power-related keys. I would like to enter the hybrid sleep using the keyboard and only with a minimum of keystrokes.
If there is none, how do I bind a hotkey to it?
Jader Dias
- 16,236
33
votes
8 answers
How to turn off the display in Windows 8 without locking or making computer go to sleep?
How to turn of the display in Windows 8 without locking or making computer go to sleep ?
The problem is that when I enable ‘Turn off display after x minutes’ feature from control panel, the device goes into sleep after ‘x’ minutes. It seems that…
darshshah
- 331
32
votes
9 answers
Is there a negative impact on an SSD drive if I power cycle it every hour for 6 months?
We have a system that uses an SSD (4TB Samsung 860 Pro) that we power on for 10 minutes to write data to and then off every hour for 24/7 for about six months via a Linux system. We manually turn on the power to the drive and wait for the O/S to to…
Patratacus
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31
votes
8 answers
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 have to hit the power button on the PC at which…
Howard Pinsley
- 451
30
votes
2 answers
What do different values of hard drive's Advanced Power Management feature (hdparm -B) affect, except spin-down?
hdparm's -B parameter is documented as:
Get/set Advanced Power Management feature, if the drive supports it. A low
value means aggressive power management and a high value means better per‐
formance. Possible settings range from values 1…
Petr
- 3,273
29
votes
2 answers
windows 10 desktop - does sleep mode use a lot of energy?
I recently bought a desktop PC - it's the first I've bought for possibly 10 years and it's got Windows 10 installed.
I notice that these days, there is no option to Hibernate anymore, just shutdown or sleep.
So I'm wondering, if I'm only using the…
RoboShop
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