Questions related to power management, particularly power saving measures.

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0answers
15 views

Ubuntu sleeps and wakes repeatedly on critically low battery state

When the battery is critically low it just suspends itself and wakes again automatically repeatedly in a loop. And i need to be like very very fast to click the shutdown button to turn down the ...
0
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0answers
26 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 ...
0
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0answers
42 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
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1answer
38 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 ...
1
vote
1answer
69 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
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2answers
29 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
59 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
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1answer
74 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
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0answers
25 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
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0answers
41 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 ...
0
votes
1answer
40 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 ...
0
votes
0answers
70 views

xfce4-power-manager not updating; ACPI finding an unknown battery but working fine?

I recently upgraded my Asus S56CA Ultrabook and unfortunately my battery indicator in xfce4 stopped working. However, the battery indicator in the system tray is not updating at all. If I start the ...
0
votes
0answers
54 views

problems resuming from suspend on macbookpro11,1

I've installed ubuntu 14.04 on my new macbookpro (11,1), and I'm having power-management problems. The biggest one is that after suspending by closing the lid, when I open it, it either never wakes ...
1
vote
1answer
55 views

Why is my wireless network adapter acting in a strange way? (Ubuntu 14.04)

I have a laptop with Intel Centrino Advanced-N 6235 wireless network card, and I'm on Ubuntu 14.04. For almost a week I have had a strange problem with my wireless card. When I plug in the power ...
2
votes
1answer
55 views

Please explain the parameters 'noexpose' and 'cycle' in xset

I have been trying for a long time to prevent my screen from blanking every 20 minutes. I understand there are many interlocking layers of applications that can do this and it is not straightforward ...
0
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0answers
31 views

How to find out what's wrong with my battery?

native-path: BAT0 vendor: ASUSTEK model: M50--24 power supply: yes updated: Vi 08 aug 2014 21:42:17 +0300 (30 seconds ago) has history: ...
1
vote
4answers
104 views

Laptop Battery Draining Too Fast. Laptop is too hot

I have HP ProBook 4540s with CPU Intel(R) Core(TM) i3-3110M and GPU AMD Radeon HD 7650M and Intel(R) HD Graphics 4000. (Intel® Ivybridge Mobile also.) OK, the problem is that the laptop is getting ...
2
votes
0answers
46 views

How can I set a different screen timeout time when on battery than if I am plugged in?

Currently, Ubuntu 14.04 only provides a single option: "Turn screen off when inactive for: x minutes" that applies regardless of whether my laptop is plugged in or not. I want to change this setting ...
-1
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0answers
77 views

Ubuntu 14.04 wrong battery level causes OS to hang

i'm runnig Ubuntu 14.04 on Dell E5540 laptop (i5-4200U). i suspend and resume a lot. once every other day i see this behavior: i suspend, everything is normal. i resume, but i'm taken to my desktop ...
0
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0answers
42 views

How can I make my PC hibernate when idle? 14.04

I see that this was asked some time ago for 11.04. The answer there didn't help since the answer used gconf-editor to find a key called /apps/gnome-power-manager/actions/, which doesn't exist when I ...
1
vote
1answer
20 views

Can I change actions upon inactivity and timeout for that from command line?

How do I set the policy about what action should be taken if the computer is inactive for some time. This can be easily done from GUI, via Power Manager. I am trying to do this from command line. I ...
0
votes
1answer
80 views

Resume from suspend requires hard reset [closed]

Most of the threads I've found relating to this problem state that the machine powers up but the screen remains black. Not so in my case. The problem I am experiencing is this. When testing the ...
0
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0answers
24 views

Sleep Ubuntu Server after X time of inactivity

I recently set up an Ubuntu 14.04 SAMBA server as a home file server. It will not be getting used but maybe a couple of times a day so I don't want to have everything powered on while it doesn't have ...
0
votes
2answers
15 views

Ubuntu and windows dual-booted no battery warning on windows

Sorry if this may be of topic. I got windows 8.1 and Ubuntu dual-booted on my ASUS x550ca. Whenever I'm booted in to Windows while I am on battery power there is no low battery warning warning. It was ...
1
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0answers
159 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. ...
0
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0answers
32 views

Laptop Battery Not Detected [Shuts Down When Disconnected From Charger]

I recently installed Ubuntu 14.04 LTS on my laptop and was able to get everything working, but my battery suddenly stopped working. I thought it just wasn't charged, but even after charging it ...
0
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0answers
30 views

Getting Linux to downclock and lower the V-core of my CPU at idle

So when I boot into my Windows 8 partition, Windows automatically downclocks my CPU and lowers it's V-core so that the idle temps of my i5-4570 CPU go down to 25 C. Now on Ubuntu on the other hand, ...
0
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0answers
26 views

How to make the system detect correctly charge status?

Yesterday, after correctly performed the installation of (UEFI) ubuntu 14:04 LTS 64-bit in dual-boot with Windows 8.1 64-bit on my laptop asus A551LN I had a serious problem: the operating system did ...
1
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0answers
18 views

System-level energy/power preferences

In Windows, mmc allows to set energy/power preferences for all users at a system-level: they can't change these settings until an administrator unlocks them. Is there any way to do the same in ...
0
votes
1answer
44 views

Hibernate on lid close

I want my laptop to hibernate when I close the lid. I can only choose between suspend and nothing, and both do nothing actually when I close the lid and open it nothing's changed. I also tried sudo ...
1
vote
1answer
48 views

Ubuntu 12.04 comes out of hibernate/standby randomly on Dell XPS 13

I have an ubuntu 12.04 laptop and it comes out of hibernate or standby randomly. For example, yesterday I selected hibernate, closed the lid and put it in my computer bag. 24 hours later, it is ...
0
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0answers
59 views

Novatech Elite N1716 /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed

For some reason pwm doesn't detect my fan sensor modules. Here is the output of pwmconfig $ sudo pwmconfig # pwmconfig revision 6166 (2013-05-01) (...) /usr/sbin/pwmconfig: There are no pwm-capable ...
0
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0answers
14 views

Suspend disabled

When I click the power options, the ability to select suspend/hibernate is disabled for the laptop lid close action: I believe I am missing some packages to make this work. What are they?
1
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1answer
96 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 ...
0
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0answers
47 views

Ubuntu 14.04 Shutting Down when Idle

I did a PC build a couple of weeks ago, installed Ubuntu 14.04, no problems. Recently, I've been doing some work that required that I leave the machine running some scripts over night. When I would ...
0
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0answers
46 views

/usr/lib/pm-utils/power.d script not working

I'm using ubuntu and trying to get pop-up notifications when power adapter removed. I placed my script at /usr/lib/pm-utils/power.d and made it executable, but the script seems not called when I ...
0
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2answers
69 views

Bettery life issue with Ubuntu 14.04 LTS amd 64 bit [duplicate]

i have dell 5537 i5 4th Gen laptop. after installation of ubuntu 14.04 LTS amd 64 bit version on my laptop. my laptop battery life is decreasing very quickly .and life bet-try is showing 1 ...
0
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0answers
39 views

How to install a orig.tar.gz installed package

Hey all I downloaded this file (http://packages.ubuntu.com/lucid/laptop-mode-tools) but can't seem to be able to uninstall it. I tried looking online as well as the README file but there is only ...
1
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1answer
32 views

In xfce4, how to set the critical value on the battery level?

In xfce4, xfce4-power-manager handles hibernation or suspend when battery power is critical. xfce4-power-manager-settings enables one to change the action but not the critical value. How to set the ...
0
votes
0answers
25 views

Can I enable hibernation mode in my case?

I was reading this question on how to enable hibernation because I'm interested in sending the computer to hibernate instead of power off when power is low. After trying sudo pm-hibernate, the ...
0
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0answers
20 views

Is there a way in ubuntu to setup different power plans and switch between them easily?

Im looking for the Ubuntu equivalent of Windows 'power plans'. In Win 7/8 I was able to set up custom plans and switch between them. It was also possible to choose what happened when my laptop was ...
2
votes
1answer
173 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. ...
1
vote
0answers
60 views

Lenovo x1 carbon (gen1) battery life

I'm using an Lenovo x1 carbon (gen1) and have Ubuntu 14.04 and tlp installed. I'm really dissapointed about the battery life. Some people claim to have 6 hours ...
0
votes
1answer
24 views

How to set Ubuntu with Cinnamon to hibernate when lid is closed with external monitor?

If I have external monitor attached, closing lid won't hibernate my computer. In normal Ubuntu I could edit this in power settings but how could I set set my Ubuntu with Cinnamon to do this?
0
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0answers
23 views

How to disable Suspend and Hibernate functions? [duplicate]

I don't use neither suspend nor hibernate PC function at all. I do only shutdown and reboot. However it comes into my way sometimes, i.e. when I accidentally click on "Suspend" instead of "Shutdown" ...
1
vote
0answers
103 views

Black screen on resume after suspend, pm_test is fine [closed]

I'm using Ubuntu 14.04 on a Lenovo IdeaPad S205. When I resume from suspend-to-RAM, fan goes on but screen stays off. The computer does not respond to anything except a hard shutdown (press and hold ...
1
vote
0answers
47 views

Battery drain and over heating on Dell XPS L502X

I own a Dell XPS L502X and it works fine if is booted under "Windows 7". No issue(over-heat or quick-battery-drain) is observed while using the laptop. After the recent installation of Ubuntu ...
0
votes
4answers
216 views

Low battery life in Ubuntu 14.04

I did a clean install of Ubuntu 14.04, along dual booting Windows 7. I love Ubuntu but then suddenly the power went out and the next thing I know my battery ran out of juice in less than 30 ...
1
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0answers
45 views

Fan not working increasing CPU temperature

I have Dell Vostro 1014 laptop. I am using Ubuntu 12.04 LTS. The fan of my laptop is not working anymore and increases the CPU temperature upto 85 degree Celsius. I followed the solution given on this ...
3
votes
2answers
50 views

How to enable power failure notification?

I need to enable power(A/C) failure (off-line) and power on (on-line) notifications, like this notification I searched and tried to do that but i didn't find any successful articles. i use this ...