Questions related to power management, particularly power saving measures.

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0
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1answer
61 views

HP Pavilion G6 Won't Suspend with Ubuntu 14.04

My HP Pavilion g6-2268ca with Ubuntu 14.04 won't suspend. when the lid shuts the fan never cuts off. i've checked my settings under power management and everything looks good. when I manually click ...
0
votes
0answers
11 views

Battery Meter Inconsistent and drains rather quickly

I'm presently on Ubuntu 14.04. I just migrated here from LinuxMint Quiana. My battery meter doesn't indicate when the power cable has been plugged in or removed. I can't tell if my battery is ...
1
vote
2answers
269 views

Lenovo X1 Carbon with Ubuntu 14.04 wakes from suspend by itself after 3 hours

My machine seems to wake up from suspend by itself, at irregular intervals. Causing the power to die out, and machine turn off. It is quite the annoyance, when the machine is in my case and it wakes ...
14
votes
0answers
323 views

What actions does Ubuntu trigger when battery is low?

When the battery is low, the screen gets dimmed after a few seconds already. This appears to be some special power-saving mode, and might be related to the time in ...
0
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0answers
10 views

How does one redefine the suspend command in ubuntu?

I am finding myself in need of redefining the behavior of the standard suspend command provided by ubuntu. What is happening is that because of some off hardware, the normal suspend command nor the ...
1
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0answers
11 views

“Battery not present” Dell Inspiron 14-7437 [Kubuntu-14.04]

I'm running Kubuntu 14.04.1 LTS AMD64 on my Dell Inspiron 14" 7437; it is a fresh and fully updated installation. What happens when I turn on my PC without the power cord attached is that KDE systray ...
0
votes
0answers
5 views

hibernate-disk command is failing to hibernate without producing any errors or helpful debug output

The behaviour I see after running sudo hibernate-disk -v4 is a bunch of output, followed by a switch to console, which prints a few lines, ending with "Preallocating image memory..." and then a switch ...
0
votes
0answers
9 views

turn off screen only labtop is on battery power

I am using Ubuntu 14.04 I would like that the screen does not turn off on inactivity when my labtop is plugged in, but it should turn off on inactivity when my laptop is on battery power. I can make ...
2
votes
2answers
3k views

Ubuntu 12.04 LTS drains my Samsung Series 9 900X3C ultrabook's battery extremely fast. Is there anything I can do to fix that?

The title basically says it all. My Samsung Series 9 900X3C ultrabook's battery is in the deep red around barely three hours after disconnecting it from the power - and during most of that time the ...
2
votes
1answer
36 views

Ubuntu doesn't save state after hibernation

As of yesterday, I had been using Ubuntu 14.04 with a 3GB swap-space. However, I was finding that I was unable to hibernate if I had more than 3GB of RAM in-use. So, I booted on a LiveUSB of Gparted, ...
0
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0answers
17 views

Hibernate not available [duplicate]

I found the following tip to save battery-life of my laptop while (not) using Ubuntu: "Use Hibernate rather than suspend power features" System -> Preferences -> Power Management -> On Battery Power ...
0
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0answers
20 views

How to keep the screen alight all along

I'm using ubuntu-mate, the power management doesn't work. I've set it to never close the screen, but it always set the screen off after 5 minutes when idle. Is there any another method to set it? Is ...
2
votes
0answers
26 views

KDE power management system could not be initialized

First of all, apologies but I am very new to using kubuntu, so I would need a very basic step by step answer to solve this problem. Since my last update I am getting this error message: KDE power ...
0
votes
0answers
10 views

Battery Drain Issue! [duplicate]

I am using dell inspiron 15r n5110 laptop,which comes with windows 7 by default. With windows,I can use it for 2.5 hrs(average). But on Ubuntu its just 1.5 . What could be the possible ...
1
vote
1answer
788 views

Lubuntu 14.04 Tired about suspend e hibernation “power manager not authorized”

Below the post, last configuration I used, it seems works well. I've Lubuntu 14.04 installed on my netbook (aspire one ao-532h). I am using it like a desktop with external display and input devices. ...
2
votes
1answer
682 views

Suspend on power button when session is locked

Is it possible to configure Ubuntu so that the power button causes suspend regardless of whether the session is locked or not? See here, for example. That configuration does not work, however, if the ...
101
votes
4answers
77k views

Is there a power saving application similar to Jupiter?

I have installed the 13.04 final release and so far I am loving it more 12.10. I'm trying to install the Jupiter power settings app but, I read it is no longer compatible with the new kernel. Is there ...
1
vote
2answers
60 views

Battery drains so fast

I have an HP laptop. It is a 64 bit machine. But I have installed 32 bit Ubuntu 12.04 presently. My problem is, once the battery is fully charged and start using Ubuntu it gets drained completely ...
1
vote
3answers
72 views

How to make Ubuntu shutdown when power lost?

My project requires that the power source for the laptop be switched on and off. Is there a way to make Ubuntu shutdown properly when the external power is lost? It will run the shutdown on its ...
8
votes
5answers
3k 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?
0
votes
2answers
90 views

Black display after wake from suspend via closing the lid

I have bought a new HP 15-G002AX notebook recently, with Processor: AMD A8-6410 APU with AMD Radeon R5 Graphics × 4 Graphics: Gallium 0.4 on llvmpipe (LLVM 3.4, 128 bits) I am using ...
9
votes
3answers
16k views

How to disable auto power off of usb devices like usb mouse?

I don't know how , but somehow automatic power-off of usb devices got accidently enabled. Now my usb mouse goes off even if it's idle for 2-3 seconds. it's really irritating. help?!!!!! P.S. This ...
5
votes
5answers
8k views

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 ...
1
vote
1answer
89 views

What commands the suspend item in system menu really launch?

On my laptop trying to go in sleep mode using the Unity Sleep item (or closing the lid for what it is worth) does not work well (it goes in suspend mode very slowly and after that I am unable to wake ...
3
votes
0answers
113 views

Laptop battery always discharging

I have a fully up to date Ubuntu 14.04 on my Asus X550DP laptop. My problem is that the battery is always discharging. When I plug the AC adapter in, it charges battery up to around 96% and stops ...
1
vote
1answer
125 views

Ubuntu 14.04 does not recognize my battery

For the last 3 years I've been using a Samsung notebook. I was using Ubuntu 13.10 until 2 weeks ago. Then I decided to format and install Ubuntu 14.04 LTS. Everything was working great, until the ...
-1
votes
1answer
38 views

Notebook keyboard gets hot only on the left side!

I have the Asus VivoBook S551lb, a thin notebook, with intel i7 4500u 1.8 ghz , intel 4600m internal graphics, and nvidia 740m discrete graphics. It looks like the fan placed in the left side , after ...
2
votes
1answer
54 views

How to disable power off/restart option on lock screen?

When I'm lock the screen it's possible to turn off computer or restart it. How to disable this possibility? This possibility on lock screen makes all lock screen idea no sense.
0
votes
0answers
14 views

vm writeback timeout not work on ubuntu 14.04

I install Ubuntu 14.04 on my notebook, I use Ubuntu minimal a try to add /etc/sysctl.d/dirty.conf with vm.dirty_writeback_centisecs = 1500 but powertop white BAD and cat ...
0
votes
0answers
14 views

What is power.d hook do i need add example power.d hook in /etc/pm/power.d/

Recently after reading article on reducing power on https://help.ubuntu.com/community/PowerManagement/ReducedPower I installed pm-powersave. then I run command sudo pm-powersave true. Would this work ...
1
vote
2answers
3k views

Unity won't suspend on inactivity

Running 12.04. I can manually suspend the system and wake it up again, but I can't get it to suspend on inactivity automatically. I have it set to "Suspend when inactive for" 10 minutes in ...
2
votes
1answer
158 views

E: unable to locate power managment interface

I am very new to Ubuntu I am running Ubuntu 12.04 I tried to install the power management interface sudo apt-get install power management interface and i get E: unable to locate power ...
0
votes
1answer
40 views

Critically Low Battery Notification not showing in Ubuntu 14.04.1

Ubuntu is not showing the notification if there is a critically low battery. I already tried this reinstalling libnotify-bin notify-osd, but that didn't help. I am using a dell Inspiron 15 3537 ...
0
votes
2answers
22 views

File swipped away after power faliure

We are bunch of guys (9) working on a project. All of us save our files to a single computer which has windows share enabled on the project folder. There is a problem of power cut out in our place and ...
1
vote
1answer
65 views

Computer not suspending when inactive in the main log-in prompt

My computer is set to automatically dim the screen and lock after 10 minutes, and suspend after an hour of inactivity. That works fine - but only once I've logged in. If I switch the computer on and ...
1
vote
1answer
111 views

How to get xfce4-power-manager to work in Lubuntu 14.04?

I've had nothing but issues with it. On install, everything went fine, but I couldn't modify the lid action, and the suspending was very buggy - sometimes it worked, sometimes not. Then I found out ...
7
votes
2answers
5k views

How to keep battery charge at 80% to increase its lifespan

Lithium-based Batteries are not supposed to constantly sit a maximum charge. This damages them and reduces their lifespan. This is why some people take the battery out when using the laptop plugged ...
4
votes
2answers
190 views

How to get a notification when computer is not charging?

My laptop battery sucks, and lasts up to 5minutes without charging. Sometimes the charger falls out without me knowing, making the computer shut off unexpectedly. Is there a way to get a notification ...
-3
votes
2answers
194 views

How to write a script to “listen” to battery status and alert me when it's above 60% or below 40%?

I want to make a tool that alerts when battery is below 40% or above 60% so I can start/stop charging accordingly. I know some tools alert when battery is low, that's not enough. Is there a tool ...
1
vote
2answers
368 views

Alarm clock from suspended mode

I want my laptop to wake up from suspended mode in the morning and alarm me to wake up using my mp3 file. How do I do it? I tried apmsleep, but it doesn't work cause my PC doesnt have "suspend to ...
0
votes
1answer
2k views

battery icon / power indicator not shown in menu bar after upgrade to 12.04

Since the upgrade from 11.10 to 12.04 the battery icon / power indicator is not shown any more in the menu bar. I went to 'system settings'-->'power' and tried to set 'show battery status in menu ...
10
votes
2answers
8k views

How do I check if last shutdown was clean?

How can tell that my last shutdown was properly done in Ubuntu 11.10 or if the machine was powered off before shutting down the OS?
2
votes
1answer
257 views

Is there any battery management software to work with a laptop plugged to AC power so as to save the battery lifetime?

I was used to remove the battery of my laptop whenever I worked with my computer plugged to AC power and to load the battery with the computer switched off so as to save the lifetime of the battery. ...
4
votes
1answer
64 views

Prevent machine from sleeping when SSH connections are on

I am trying to save power by switching desktops to suspend mode when they are inactive. But many desktops are also accessed via SSH by their owners. There is a wakeonlan solution deployed to enable ...
19
votes
5answers
40k views

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 ...
0
votes
2answers
52 views

Ubuntu and battery life

Currently I'm using a Netbook (Dell Latitude 2100 non-touch scree) (2GB RAM, 1.6GHZ Intel Atom Processor, 60GB HDD, originally Win Vista Business, currently WIndows 7 Pro and a windows experience ...
0
votes
2answers
719 views

Docky is closing when I plug/unplug the AC cable

Every time I plug/unplug the power cable docky is closing. This thing is happening since I have updated to 14.04, also, my battery life seems to be shorter. I am using a toshiba satellite c55-A-1PX.
17
votes
5answers
25k views

Ubuntu 12.10 “Turn screen off when inactive for: Never” still turns off

After a fresh install of Ubuntu 12.10, my screen still goes off after about ten minutes. I've been to the Brightness and Lock control panel. The Turn screen off when inactive for: setting is set to ...
0
votes
0answers
27 views

Ubuntu 14.04 upgrade won't suspend

I have upgraded to Ubuntu 14.04, since then my computer won't suspend. When I click suspend from the menu it just goes to a locked screen. It is using up my battery. I have to totally close down ...