Questions related to power management, particularly power saving measures.

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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 ...
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2answers
19 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 ...
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1answer
24 views

How to avoid the automatic disk check every 30 reboots?

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 ...
3
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2answers
38 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 ...
1
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1answer
31 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 ...
1
vote
1answer
60 views

Power ON after lid open

I have re-installed Ubuntu 14.04 on my Sony SVF1521 laptop. When I open lid, automatically turn ON power. I checked Power setting I didn't found any option for disabling this action.I didn't use any ...
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2answers
288 views
+50

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 ...
3
votes
5answers
4k views

Brightness control doesn't seem to work on a Toshiba Satellite M115 laptop

I have Ubuntu 12.04 LTS on a Toshiba Satellite M115 laptop. The brightness control doesn't seem to work with the "brightness and lock" setting or fn+f6 and fn+f7 (which usually works in Windows). How ...
2
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2answers
652 views

How to prevent suspension when a program is currently running?

Is there any way to make Ubuntu 12.04 understand when it should suspend or not in terms of the software that is currently running? For example, if I am installing something and it takes more than 10 ...
0
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1answer
54 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
19 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
38 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 ...
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0answers
30 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
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1answer
34 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
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0answers
43 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 ...
1
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1answer
44 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 ...
1
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0answers
12 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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3answers
555 views

How do you control how hybrid suspend works?

I would like hybrid suspend to act a certain way. If I add the code # Always use suspend_hybrid instead of suspend if [ "$METHOD" = "suspend" ]; then METHOD=suspend_hybrid fi PM_HIBERNATE_DELAY=XX ...
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0answers
29 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: ...
8
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2answers
4k views

13.10 hangs on waking from suspend except when suspended from console

I know waking from suspend is an issue, but this looks like a separate bug. When I suspend 13.10 on HP Pavillion dv6 (AMD 6770M/fglrx 13.10.10) from x, it suspends normally but freezes when waking. I ...
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0answers
39 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 ...
4
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4answers
7k 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
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4answers
93 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
1answer
1k views

Monitors won't sleep (power management) if synergy or synergyc? is running

Similar question to Monitor won't enter power save mode , however I only experience the problem under synergy. Screensaver settings work, but the monitors never go to sleep. When synergy is not ...
2
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0answers
38 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 ...
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0answers
64 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 ...
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 ...
1
vote
1answer
19 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
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1answer
66 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 ...
1
vote
1answer
42 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 ...
1
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1answer
86 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 ...
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0answers
20 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
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2answers
14 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
102 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
2answers
1k views

Cannot increase wifi card power using iwconfig

So I set up a hotspot using hostapd, isc-dhcp-server and MASQUERADING. The hotspot works and I can access Internet. Problem The connection speed is too slow. When I connect to my hotspot (via ...
0
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0answers
27 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
27 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
20 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 ...
0
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1answer
72 views

Power Button shutdown permission override

I realise there are several questions about Power Button options, but this is a little different. On my system, shared with my family, I have disabled shutdown from the device menu, users may only ...
1
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0answers
17 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
35 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
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1answer
165 views

Suspend on lid close, even with the option OFF

I've set up a friends laptop with Ubuntu 12.04LTS with the Cinnamon desktop, and I'm having a few issues with the power settings. As far as I can tell I've got every setting to "Do Nothing" when the ...
0
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0answers
57 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?
2
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2answers
500 views

Why is my notebook going to sleep when lid is closed even If I disabled it?

Here is my situation: I installed Xubuntu 13. 10 I added the Cinnamon PPA and installed Cinnamon 2. 0 I removed all the GNOME stuff, that came with Xubuntu Everything went fine so far...but... ...
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3answers
1k views

How can I disable asus-nb-wmi when using battery power mode?

I'm trying to improve the battery life of my Asus U32U notebook. I'm running Ubuntu 12.04 64bit and using powertop it shows the following: PowerTOP 1.97 Overview Idle stats Frequency stats ...
2
votes
1answer
164 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. ...
0
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0answers
44 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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0answers
43 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 ...
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0answers
28 views

Samsung ATIV 8 has terrible battery Lifetime with Ubuntu 14.04 - it's only 30% of Windows 7 Lifetime

Now, I have read quite a couple of posts about this subject but I am wondering if anyone actually found something that gets the power drainage close to Windows 7. I use an Samsung ATIV 8 (Samsung ...