Questions related to power management, particularly power saving measures.

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2
votes
1answer
54 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
votes
0answers
20 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
votes
0answers
31 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 ...
3
votes
1answer
279 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 ...
2
votes
3answers
91 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 ...
0
votes
0answers
30 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
24 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 ...
2
votes
1answer
130 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
1answer
104 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 ...
1
vote
2answers
86 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 ...
0
votes
1answer
131 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 ...
1
vote
1answer
513 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 ...
4
votes
2answers
236 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 ...
-1
votes
1answer
70 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 ...
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 ...
0
votes
2answers
74 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 ...
1
vote
1answer
78 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 ...
0
votes
0answers
48 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 ...
1
vote
0answers
70 views

USB 3.0 ExternalEnclosure Unmounts at random

Title says it all. I noticed the drive was unmounted, so I got to looking through dmesg and found: [31080.516164] usb 4-3: USB disconnect, device number 3 [31080.760493] usb 4-3: new SuperSpeed USB ...
0
votes
1answer
168 views

Horrible battery life with Ubuntu 14.04 on ThinkPad

I've purchased a Lenovo ThinkPad S540, which has according to Lenovo '9 hours of battery life'. I was really happy when I tested the device running Windows 8.1, and the battery worked for 6 hours. But ...
0
votes
2answers
155 views

How to lock without turning the screen (monitor) off?

Due to a recent bug, each time my screen turns off, I cannot get it back on. Currently, the screen starts turning off after the computer is locked - which effectively means that I cannot lock my ...
1
vote
0answers
185 views

Xfce power manager in Xubuntu 14.04 doesn't react to my choices

Okay, so I chose to make it so that when my laptop lid closes and I'm on AC (my power cord is plugged in) it will do NOTHING. But when I close my laptop lid .. it just suspends. I've tried it like a 8 ...
0
votes
0answers
57 views

Power management advanced tool

I'm searching for a tool that has a lot of configurable options. It should be able to detect events like cable plug-in/out, save many profiles and change options like CPU frequency, screen brightness, ...
0
votes
1answer
60 views

What's the difference between putting display to sleep and switching off the display?

When I mess with my power options, I have the options: Put display to sleep when computer is inactive for: Switch off display when computer is inactive for: What is the difference between ...
0
votes
0answers
93 views

Automatic Screenlock keeping screen on, ignoring timeout setting

I'm on a Macbook Air 4,1 running 14.04, with surprisingly minimal trouble so far. However there is an issue with the screen - when I set the 'Lock' on, in 'Brightness and Lock', when I close the lid, ...
0
votes
1answer
61 views

How to consume less power in ubuntu?

I noticed when I installed Ubuntu that it consumed more power, so I want to know how to reduce power consumption.I want the steps please.
-1
votes
1answer
25 views

How to make ubunu in power saver mode?

when i type this command in the terminal sudo aptitude install pm-utils to use power saver mode it tells me sudo:aptitude command not found what can I do to fix this ?
0
votes
1answer
101 views

Go to sleep based on screen activity

So, the behavior I want is: 1. Screen goes blank when inactive for [specified time]. 2. Computer suspends when screen is inactive for [specified time 2]. With the default setup, these two can be ...
0
votes
1answer
27 views

Ubuntu server detecting electricity outage?

I am in the planning stage for setting up my server and have some doubts. Firstly my network is something like this: One parent PC connected to the internet and 3 other child PCs which are not ...
0
votes
0answers
33 views

Hibernation works only when connected to AC power

Please help me understand this part of syslog when I try to wake up from hibernation. My specification - 4 GB of RAM, 8 GB of linux-swap, intel core i5-4200U, NVIDIA GeForce GT 750M. The problem is ...
-1
votes
1answer
141 views

how to increase MaxPower of specific usb port

it takes long while to charge mobile phone by usb port. how do i specifically increase MaxPower of usb port ? this cmd help to understand MaxPower of usb port root@ROHIT-PC:/home/rnztx# lsusb ...
4
votes
1answer
152 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 ...
0
votes
1answer
66 views

Simulate power button using command?

When I hit the power button on my laptop (Ubuntu 14.04.1 without any modifications), I receive a pop window saying Goodbye, what would you like to do? Lock Suspend Restart Shutdown How can I get ...
0
votes
0answers
9 views

Wake up command as ordinary user

Yandex disk cloud drive daemon started via ~/.config/autostart/Yandex.Disk.desktop. It works well except the PC waked up after suspend. Yes, I work with /etc/pm/sleep.d scripts when I need to do ...
0
votes
0answers
134 views

14.04 - Laptop screen goes blank when lid shut

I'll be totally honest, I have googled this question...I have read responses...but I'm still pretty confused...anyway... So, anyway, I want to hook up my laptop with HDMI to my TV...that part works ...
-2
votes
2answers
293 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
1answer
84 views

14.04 LTS can't suspend anymore

I changed the "what to do when laptop's screen is closed" option under Power last night. It was at suspend and I switched it to do nothing. The problem is, I can't get it back to suspend anymore! ...
0
votes
0answers
36 views

Set Brightness to 0 when lid closes

is there a way of setting the brightness level to 0 or blanking the screen when I close my lid (without suspending the system). I just prefer it that way, since I listen to audiobooks while driving ...
0
votes
2answers
46 views

let utransmission run even after lid closed?

How do I set my settings such that even if I close my lid (Laptop) My downloads don't stop or pause in utransmission I have set the setting in power options to not suspend after closing lid still ...
2
votes
2answers
2k views

Intel Corporation Wireless-N 7260 card dies randomly

On Ubuntu 14.04 32bit, after some up-time my wireless card stops working. Sometimes it helps to stop WiFi in the nm-applett (at the top right corner) and restart it to get a new connection to my WiFi, ...
0
votes
0answers
51 views

Ubuntu 14.04: hibernate consumes power

Upgraded from 12.04 to 14.04 (not new install). In 14.04, enabled display of hibernate choice in power menu. This works as well as pm -hibernate. Followed the steps in ...
1
vote
1answer
215 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 ...
0
votes
1answer
47 views

How to avoid the automatic disk check every 30 reboots? [closed]

It it has to do a disc check from being powered down 30 times like that.I have to do it that way cause it wont power down regularly and I'm running Linux ultimate edition x64 2.3. I know its out dated ...
2
votes
1answer
232 views

suspend error on 14.04 LTS

I've looked around and seems like various problems around suspend are wide spreaded for 14.04 release, nevertheless I haven't seen exactly my problem reported, nor my laptop model mentioned. So, the ...
0
votes
2answers
112 views

Excessive Power Consumption by ethernet socket

Recently I have been having problems with power consumption in Ubuntu, I am not exactly sure when this started but roughly about two weeks ago. Idle my laptop used about 9-10W of power, or at least it ...
3
votes
2answers
115 views

What exactly is TLP doing that default system config wouldn't?

All the info about TLP on the surface looks more like advertisement and marketing to me, I can't see any detailed comparison to default configurations. What are the precise differences compared to ...
0
votes
1answer
246 views

The 'resume after suspend' problem

I recently moved back to Ubuntu. And it has seriously improved. Everything is so smooth and fast. Except, I have this issue, like so many others, I cant wake up after suspend while on battery. With ...
0
votes
0answers
156 views

Suspend broken: pm-suspend fails due to /sys/power/* being a Read-only file system

My System 76 laptop running 14.04 won't suspend. Running sudo pm-suspend fails with the following in /var/log/pm-suspend.log: Running hook /usr/lib/pm-utils/sleep.d/94cpufreq suspend suspend: ...
0
votes
0answers
58 views

Battery & Fan Issue

System ASUS N56VJ Ubuntu 14.04 - 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Issue: Sometimes when I start up my laptop, the fan turns on at full ...