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Questions tagged [power-management]

Questions related to power management, particularly power saving measures.

2921 questions
516
votes
16 answers

How can I tell Ubuntu to do nothing when I close my laptop lid?

I would like closing the laptop lid to be a no-op. How can I do that?
badp
  • 12,722
515
votes
14 answers

How can I suspend/hibernate from command line?

How can I suspend or hibernate my laptop using command line, without installing additional software?
user1034
  • 5,153
434
votes
10 answers

How to enable hibernation?

In Ubuntu 12.04 and newer, hibernation has been disabled by default in policykit. How can I enable this back?
Dima
  • 9,955
281
votes
8 answers

How to control fan speed?

How can I control the computer's fan speed? On Windows there is a wonderful program called SpeedFan.
grizwako
  • 5,735
190
votes
5 answers

Is there a power saving application similar to Jupiter?

I'm trying to install the Jupiter power settings app but, I read it is no longer compatible with the new kernel. Is there a similar program or a way to manage the power settings on 13.04?
Michael Scott
  • 2,561
187
votes
24 answers

Tips to extend battery life for laptops and notebooks

This question is present as a matter of historical interest. While you are encouraged to help maintain its answers, please understand that "big list" questions are not generally allowed on Ask Ubuntu and will be closed per the FAQ. Is it possible…
Niall Murphy
  • 685
154
votes
8 answers

How do I disable my system from going to sleep?

I am getting a web server setup at home on an older AMD 2400+ desktop. I have Ubuntu 11.04 installed and running however, after a time, I can no longer browse to the server. When I go to the keyboard and press a key, everything magically works…
Mike Wills
  • 1,833
109
votes
14 answers

How can I control HDD spin down time?

I have 2 HDDs in my PC. Ubuntu is turning off the secondary HDD very quickly after about 15 minutes, which is short for me. I need to control this time. How can I do it? I tried GNOME power management but did not find it useful.
user16295
  • 1,091
105
votes
9 answers

How do I modify the options for the power button?

When I press the power button a dialog opens, but I want to shutdown the system without receiving "Do you really really want to shutdown?". How can I choose a direct shutdown action on a pressed power button? I had the same problem with the 11.04…
NaN
  • 1,435
102
votes
20 answers

How to prevent my screen from either dimming or the screen-lock starting when watching YouTube?

My screen brightness used to dim after a few seconds to preserve battery. This is default in Ubuntu 12.04. However when watching video it should not dim. This works correctly when I watch videos using native applications like VLC. With in-browser…
Steven Roose
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102
votes
4 answers

How to set custom lock screen time in Ubuntu 18.04

The maximum lock time in Ubuntu 18.04, when set via GUI, is 15 minutes. This can be set in Settings → Power → Power Saving → Blank screen. I'd like to increase this to 30 minutes for my machine at home. How can I do that?
Daniel C
  • 4,170
89
votes
11 answers

Keep Ubuntu Server running on a laptop with the lid closed?

I decided to use my Eee PC 1001HA as a home server. I have it connected through Wi-Fi to the router, running Ubuntu Server 12.04. Everything works fine except this annoying problem: when I close the lid, the ssh server stops working and, I guess,…
WhyWhat
  • 1,029
88
votes
2 answers

How to change critically low battery value?

I would like my laptop to hibernate itself when the battery level is 10% to be sure it has enough power to complete the operation properly. Actually if I don't pay attention my laptop informs me it will hibernate when it's too late, so instead it…
oidualc
  • 1,453
77
votes
10 answers

How to go automatically from Suspend into Hibernate?

Is it possible to make Ubuntu go into Hibernate state from Suspend, aka "Suspend Sedation"? What I am looking for is this: When I close the lid, the laptop is put into Suspend. Then, after a pre-determined time (even if the battery is going strong)…
Sergey Stadnik
  • 1,195
74
votes
6 answers

How do I monitor power consumption?

The powertop program shows the power usage, but only after about five minutes. Before that, it shows: no ACPI power usage estimate available That's one of the limitations of the powertop program. What program is recommended for reliably monitoring…
Lekensteyn
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