Questions related to power management, particularly power saving measures.

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2
votes
1answer
589 views

What exactly is --no-daemon function in Gnome-power-manager

I have problem with monitor flickering and here i found that possible solution is to run gnome-power-manager like this: gnome-power-manager --no-daemon For some people this fixed the issues. I am ...
2
votes
2answers
2k views

What happened to sched_mc_power_savings

My laptop's battery performance is awful. I can get about an hour and a half out of it, so I've been looking for some ways to boost the power efficiency of my laptop. I saw the tip to enable this: ...
4
votes
1answer
2k views

Unmounted disk still spins up regularly

I just added a disk, with partitions but none of them are mounted. The disk will still spin up every now and then. it goes like this: ### disk spins up hdparm -Y /dev/sdb;date /dev/sdb: issuing ...
2
votes
1answer
576 views

Are there tools to manage the power management for HDD?

I wonder if there are a better tool than the panel at System → Preferences → Power Management to manage the power consumption for the HDD. Specifically HDD in a laptop.
3
votes
1answer
4k views

How to enable the CONFIG_PM_ADVANCED_DEBUG kernel configuration option [duplicate]

Possible Duplicate: What is kernel configuration? I'm trying to save the battery power. For that i'm using powertop and one suggestion is "Enable the CONFIG_PM_ADVANCED_DEBUG kernel ...
7
votes
2answers
6k views

Which log will tell me why my computer shut down?

I was at school SSHing to my homebox. All of a sudden, my connection was closed. Attempting to reconnect failed. When I returned home, I discovered that my computer was off. Nobody was at my house ...
2
votes
1answer
516 views

How can I view power statistics on a desktop computer?

I can view power statistics on my laptop by clicking the battery icon in the indicator applet. How can I access this screen on a desktop computer?
2
votes
3answers
4k views

How to control display brightness on Intel hardware?

I'm working with a Sony Vaio BZ-12 Notebook and want to know how to manage the brightness of my display, especially when it's in eco-mode. The designated Graphic-Accelerator is the Intel GM45. With ...
3
votes
2answers
522 views

How exactly does gnome manage laptop suspend events?

The reason I ask is that, while suspend under lid closure and fn-F4 work perfectly in the Ubuntu (gnome) desktop, I cannot get them to work when using a different window manager (fvwm) on my thinkpad ...
10
votes
5answers
4k views

How can I keep a wireless card's radio powered off by default?

My desktop's PCI wireless card is always scanning for available wireless networks, but I only rarely use it. Can I keep the radio turned off until I need it?
4
votes
1answer
364 views

Why is kernel “rescheduling” causing so many wakes-from-idle?

PowerTOP reports that the majority of wakeups are being caused by [Rescheduling interrupts], [kernel scheduler], and [kernel core]. What are these, and can I do anything to reduce the number of ...
10
votes
4answers
2k views

Cutting desktop power usage

I'm on a general energy saving mission. I've finally swapped my old CRT monitor for a LCD, so the next step it to optimise the PC power usage. It's using an AMD 64 X2 4600+ CPU which I know can ...
7
votes
1answer
361 views

What Activities Stop Computer from Sleeping

I generally set up power hungry servers with a fairly short timeout before they're supposed to suspend or hibernate, but they seem to occasionally go to sleep during file transfers, ssh sessions, etc. ...
2
votes
2answers
3k views

Is There A Spiceworks Equivalent?

For some reason I vaguely recall there being an equivalent of Spiceworks for Ubuntu. I had it running on an old server that crashed and now I can't remember the name. Any thoughts?
15
votes
2answers
11k views

How to charge the battery till 60-80% only?

I just got my laptop's battery replaced and read a bit about how to prolong it's life. Most people say that the best choice is not to charge it will 100%, but rather to 60-80%. My battery is quite ...
89
votes
3answers
252k views

How to control fan speed?

How can I control the computer's fan speed? On Windows there is a wonderful program called SpeedFan.
6
votes
1answer
600 views

Laptop resumes from suspend while lid is closed [closed]

I have a Dell Studio 15 and I am running Ubuntu 10.10. When I close my lid or select the suspend option, the machine suspends as indicated by the slowly pulsing power indicator. I'll put the machine ...
1
vote
1answer
5k views

How to turn off power management for external hard drive (Seagate GoFlex)?

I bought this 2tb Segate GoFlex this last Black Friday and since then every 15 minutes or so the drive spins down, and then a little while later completely dismounts. Very annoying. From what I ...
6
votes
2answers
574 views

Is it safe to configure “Shutdown” on “When laptop lid is closed”?

To setup a laptop owned by a complete PC novice any settings that may become hard to tackle remotely need to be avoided. The laptop will be administrated via SSH. One thing in my list are problems ...
6
votes
2answers
2k views

How to prevent battery from charging while on UPS

I'm running on UPS power and would like to prevent the laptop's battery from charging, to increase the amount of power available to other devices. Is there a way to do this? update The machine is a ...
6
votes
4answers
7k views

Monitor won't enter power save mode

My LCD monitor won't enter power save mode. I've gone into System → Preferences → Screensaver, clicked Power Management, then set Put display to sleep when inactive for: to 10 minutes (for both On AC ...
1
vote
1answer
1k views

Monitor turning off instead of activating the screensaver, how do I prevent it?

I have a screensaver configured to activate after 5 minutes. When the time elapses, instead of activating the screensaver, my monitor turns off. I tried playing with settings, and searching the ...
2
votes
1answer
797 views

How to close lid without triggering standby one time only

Related: How can I tell Ubuntu to do nothing when I close my laptop lid? I have my laptop set to activate standby when I close the lid. I want to keep this as the default for both battery and AC ...
5
votes
3answers
561 views

How can I adjust the time that automatically reduces the brightness of screen?

At the moment it uses just a few seconds of inactivity after that ubuntu reduces the brightness of my screen. Where do i find the option to increase this value?
2
votes
2answers
567 views

Hard Disk Spins Down as long as Battery is in Laptop [closed]

I just figured out today that as long as the battery is in my laptop, it doesn't matter if it's fully charged while plugged in, Ubuntu always spins down my hard drive. I noticed this because there was ...
135
votes
12answers
134k views

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?
10
votes
2answers
7k views

How do I measure server power consumption?

Is there a command, or package that can be used to calculate how much power my server is drawing? I am interested in knowing how much my server is costing me to run. I know the calculations of how ...
6
votes
4answers
691 views

Other devices in the battery power indicator?

Every now and then, I encounter some mention of other devices being shown in the power indicator. For example, along with the laptop battery, listing the battery level for an iPod being charged over ...
1
vote
2answers
908 views

USB blocks suspend on a Gigabyte GA-890GPA-UD3H with ATI SB700/SB800

Following on from question 12397, I'd still like to get suspend working on my Phenom II X6 / GA-890GPA desktop machine running current Maverick. When I run pmi action suspend the machine doesn't ...
29
votes
6answers
11k views

How to go automatically from Suspend into Hibernate?

Is it possible to make Ubuntu go into Hibernate state from Suspend, aka "Suspend Sedation"? For example, my laptop is set up to go into a Suspend once I close the lid. If then I don't use it for ...
5
votes
2answers
1k views

Will Ubuntu Server properly manage the power settings on a netbook?

I'm planning to install Ubuntu Server on a netbook to minimize power consumption. Are there any special considerations I should make for this kind of setup? Will Ubuntu Server properly manage the ...
5
votes
1answer
781 views

Booting hangs at “Checking battery…” [closed]

Ubuntu 9.04 (JAUNTY JACKLOPE version)Installation Guidance REQUESTED. I am a quite new user (more proper to say “..a learner”) of Ubuntu. I am a Sr. citizen. Please guide and help me in the matter ...
1
vote
0answers
396 views

Ubuntu using up battery power too quickly [duplicate]

Possible Duplicate: Battery drain on ubuntu is fast. I use dual boot of Windows 7 and Ubuntu 10.10 on my laptop. My windows 7 easily runs for about 2 hours on battery. The problem is ...
10
votes
0answers
4k views

Battery drain on ubuntu is fast [duplicate]

My battery drain on win7 is less than that of ubuntu (around 45 min of difference). Can you advice me something to get best battery performance on my laptop? when I decrease the brightness it remains ...
3
votes
2answers
3k views

Booting ubuntu desktop into command prompt

I use ubuntu desktop 10.10 on a netbook. Quite often I use it as a proxy server (squid3) and file server (samba) for my network. So when I am using it as a network server, is it possible to boot into ...
4
votes
3answers
5k views

“On battery” is not recognized

I have just bought a lovely ThinkPad Edge 11 which have ~6 hours of surfing in Windows 7. But unfortunately, a clean Ubuntu 10.10 give me max 4 hours which is not satisfactorily. Therefore I have ...
4
votes
2answers
1k views

How is the Magic Trackpad's Battery Life (with Ubuntu)

What are other peoples experiences are with the battery life of the Apple Magic Trackpad using Ubuntu? I think I've emptied included batteries after about two weeks usage for five days a week, eight ...
18
votes
4answers
6k views

How to turn off the display via the command line?

Is there a way to turn off the display (enter power saving mode) using a command? For example, when the computer is inactive for a specific interval, the screen turns off to conserve energy. Is there ...
1
vote
1answer
511 views

I have a HP Probook 4510s and everytime I plug it in, the monitor dims

anyone else notice this on their laptops, or is it just mine? Ubuntu 10.10 by the way...
6
votes
0answers
1k views

Can not estimate remaining battery time? [duplicate]

Possible Duplicate: Laptop's battery is stuck on “estimating”? After updating to Ubuntu 10.10 from 10.04 Ubuntu can not estimate both the battery time and the percentage ...
5
votes
2answers
3k views

Laptop shuts down on lid close

When I close the lid of my Asus X77JQ, lucid shuts it down automatically after five minutes. I want to be able to sleep in the same room as my laptop, so I would like to be able to close the lid ...
-1
votes
3answers
339 views

Login fail with low graphics then crash? [closed]

I was using Transmission to download some stuff, when I got a notification that there was only 800 MB of free space left. I soon rebooted, only to find out, that i could not login again. I would get ...
146
votes
22answers
157k views

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 ...
47
votes
3answers
2k views

How to get the “Your battery is broken” message to go away?

Every time I turn on my computer, I see a message saying something like: Your battery may be old or broken. I am already aware that my battery is bad. How do I suppress this message?