Questions related to power management, particularly power saving measures.

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3
votes
2answers
81 views

How to enable power failure notification?

I need to enable power (AC) 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 these ...
1
vote
0answers
214 views

Message {1.079026} ACPI PCC probe failed; starting version 219

I am running Ubuntu 15.04 (Vivid Vervet) with 3.19.5-031905-generic #201504211114 kernel and GNOME Shell 3.14.4 on a Samsung NP370R4E laptop. When I boot up, I see [1.079026] ACPI PCC probe failed ...
0
votes
0answers
32 views

High number of interrupts on Ubuntu 15.04 on Dell XPS 13 2015 (9343)

In powertop I noticed a high number of interrupts 'INT3432', which I think would be either the touchpad or sound card. I am concerned on the effect on the power consumption and battery life. FYI I ...
0
votes
1answer
16 views

Disable faint of display Ubuntu 14.04

I want to know there is exist some way to disable faint of display brightness when I don't connected to energy network(I use notebook). I have already set on both pages Brightness and Supply to do ...
0
votes
0answers
8 views

What is difference beetwen dim screen and screen energy saving?

What is difference beetwen dim screen and screen energy saving? I see these setting in power managment panel
-1
votes
2answers
68 views

Power management for wireless unable to turn off in Xubunu 15.04 Vivid

I have tried everything that i can find on this site as well as the internet to turn off power management for the wireless card. ----------------My Current Conf-------------------- ...
3
votes
1answer
592 views

How do I control the fan on a Apple Mac Mini?

I am running 12.04 LTS on Apple mini hardware (about 4 years old). The fan seems to run non-stop. "ThinkFan" is installed but I do not know how to use it in order to modulate fan speed. The ...
1
vote
0answers
65 views

Xubuntu 15.04 goes into sleep after powering up

Upgrade from Xubuntu 14.10 to 15.05 (Update history : 13.10 -> 14.04 -> 14.10 -> 15.04). The upgrading worked well. After rebooting the machine (Dell Inspiron 6000 - 10 years old) went automatically ...
0
votes
0answers
14 views

External Drive automatically remounted and not powering down after detaching with udisks

Well this question may seems similar to these link: 1. How to prevent USB Drives from auto-remounting after remove. 2. USB 3.0 hard drives don't spin down when "safely removed" from ...
0
votes
1answer
43 views

Ubuntu 15.04, pm-utils do not look into /etc/pm/power.d/ anymore, what instead?

Since upgrade from 14.10 to 15.04 my custom script which I used to setup proper thermal profile mode for my laptop ceased to work, which I believe is because pm-utils do not respond to AC/BAT ...
2
votes
1answer
2k views

Ubuntu Battery not charging or not detected

Here is question/answer just to help the community. I just bought a new ASUS N750J . I had some issues installing kubuntu. Problems were the CPU FAN always running at full speed, battery not ...
1
vote
1answer
25 views

Automatic switching between performance and powersave mode on plugging in/out the power supply

Recently I've been trying to investigate why my laptop is so slow. I found out that it runs at ~600Mhz, regardless of the power supply being plugged in or not. Note that it's Intel i5-2540M nominally ...
1
vote
1answer
21 views

Notebook suspends only once

My ASUS U38DT performs suspend (after closing lid or choosin option) only once after reboot. Second time at the same session suspend doesn't happen. Wed Apr 1 00:21:45 MSK 2015: performing suspend ...
0
votes
0answers
24 views

Cannot shut down/restart without using the power button

I cannot get it to shut down/restart without clicking on the options multiple times and even then it won't without pressing the power button. System: Host: patrik-Lenovo-G50-45 Kernel: ...
2
votes
0answers
25 views

How do I stop the lock screen from dimming to black?

I've spent a ton of time searching for this on Google, and I still can't seem to find it. Please read fully before answering, because the majority of the answers I'm finding are about preventing ...
0
votes
0answers
13 views

suspended HDD spins up before system suspend

I'm booting Ubuntu 14.10 from the SSD ("sdb") in my notebook. As a second drive I have an HDD ("sda") which is kept on standby via entry in /etc/hdparm.conf: /dev/sda { poweron_standby = on ...
-4
votes
0answers
28 views

How to increase battery life? [duplicate]

I just got my laptop and it came with windows 8.1 with which the battery life was pretty good but since I installed Ubuntu 14.04.LTS the battery life has been reduced. I want to know if there's a way ...
0
votes
0answers
16 views

Execute script on power supply connected

I am looking for a method that will call a script when the power supply is connected, or the battery state becomes "Charging". I will not accept answers involving any type of cron or loops. I know ...
1
vote
1answer
333 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 ...
3
votes
2answers
3k views

overheating and battery drain MacBook pro

I have just installed ubuntu Gnome 14.04 in a Macbook Pro 13" mid 2012, and I have some problems with my laptop. I have already installed TLP and macfanctld, but my MacBook still have the problem, ...
5
votes
3answers
183 views

How can I wake up my computer from suspend?

After the latest update, my machine isn't waking up from suspend, and I have to hard-reboot it. This only happens sometimes, and I can't tell under what exact circumstances it happens. I think it's ...
0
votes
0answers
60 views

No Suspend option in Cinnamon after migration to Ubuntu Vivid 15.04 [closed]

Suspend was working perfectly until right before the migration to Ubuntu Vivid 15.04. I had the Suspend menu option, and the computer would suspend when the lid close. Right after migration, my ...
3
votes
0answers
21 views

USB Audio Problem [closed]

I have a Corewind WiFiG25 board based on the AT91SAMG25 400 MHz following Arm processor running Linux 3.6.9 built using Buildroot. I am attempting to play mp3 files using mpg123 connected to an ALSA ...
2
votes
0answers
42 views

Does Systemd read /etc/pm/…?

Do systems using systemd read and execute scripts in /etc/pm/sleep.d/ ? I'm starting to concluded the answer is that systemd ignores these scripts. If this is true what is the replacement? Update: ...
1
vote
1answer
154 views

Numerous hard restarts cause gradual damage to system?

I'm setting my mining rig on Ubuntu x13.10 AMD64 up to lose power about 5 times a day Those of us all can remember a time long ago when you'd get your hand slapped if you shut down a computer by the ...
0
votes
2answers
30 views

how to control what opening the laptops lid does

my laptop's lid is a little broken and when i put it in it's bag it'll be open while i'm handling it and then it get's out of the suspend mode, how can i change what opening the lid does, i only found ...
5
votes
1answer
926 views

Laptop shuts down upon waking from suspend

The computer enters suspend either by closing lid, choosing suspend from the top-right drop down, or hitting the power button and pressing suspend. It doesn't matter. I then attempt to wake the ...
1
vote
0answers
24 views

Ubuntu sleeps when power cable is removed

I just installed Ubuntu 14.04 on a Macbook 5,2. It works fairly well except that when the power cable is unplugged the desktop logs out, prompting the password menu and in less than a second the ...
8
votes
2answers
2k views

Why is wireless down/strange after switching to battery or closing/opening the lid?

I noticed that, when I unplugged my laptop, or closed/opened the lid, my wireless connection dropped, every time. I tracked it down to pm-powersave, and made it stop, see below. This could also ...
3
votes
3answers
4k views

Heating issues and Fan sound on Dell Inspiron 3521 running Ubuntu 13.04

I have tried various solutions available online 1) Added pcie_aspm=force to /etc/default/grub 2) Since Jupiter is no longer available in 13.04 , installed tlp But still fan is making lot of sound ...
0
votes
0answers
15 views

In battery mode disable apm hard drive sleeping?

I am using Ubuntu 14.04 LTS. I want to disable advanced power management level up to 255 when my laptop is in battery mode. At this moment amp change it to level 1 and it's very hard to deal with. ...
1
vote
0answers
634 views

DisplayPort does not work on 14.04

I have a new Dell 2713HM screen in my office and I could not make the Displayport output work. It just went into power saving mode. The same screen and cable works on my college's desktop and he uses ...
0
votes
0answers
14 views

Gnome Blank Screen Power Setting Option

I am using Ubuntu Gnome 14.10 and I am having problems with the blank screen option. I expect Gnome to blank the screen and lock my computer when I close the lid. However, it somehow suspends the ...
0
votes
0answers
20 views

HP battery not charging (works when removed/reinserted)

I've tended to have a problem with my battery on my HP sleekbook 15 on my ubuntu 14.04 installation. After going into hibernation or shutting down, when booted up, the battery is not charging... It ...
0
votes
0answers
20 views

Losing wireless networks on battery power 14.04

Running Ubuntu 14.04. Using a Dell Inspiron 5520. I assume this has to have been asked somewhere before, but Google has not been showing me any love whilst looking for a solution. If my computer is ...
0
votes
0answers
85 views

Just installed Ubuntu 14.04 Battery no longer charging past 70%

thanks for the help. I just installed Ubuntu, and it was working fine yesterday. I just fixed my internet connection speed, but now my battery is stuck at 70% charged. It has a symbol that says its ...
6
votes
2answers
786 views

How can I increase time of working from my battery?

Usually I am not even able to watch film from start to end. I use Acer Aspire 5930 OS is Ubuntu 11.04 I use Classic Ubuntu desktop (AFAIK it really means GNOME2) I know, that: I can decrease ...
12
votes
6answers
54k views

How do I disable my system from going to sleep?

I am getting a web server setup at home on an older AMD 2400+ desktop. I have Ubuntu 11.04 installed and running however, after a time, I can no longer browse to the server. When I go to the keyboard ...
0
votes
1answer
857 views

Timed Shutdown - shutdown after 30 minutes [duplicate]

I am running Xubuntu 13.04, I got in the habbit of closing my Acer Netbook and forgetting about it for a week+. I open it up to find it has still been running. How do I set it to shutdown after 15 ...
0
votes
0answers
8 views

Change hard drive apm setting - spin down [duplicate]

My external USB hard drive is spinning down very fast (after about 1 minute). I remember I changed once the power management configuration which is inside the disk (Setting in flash ROM or something ...
0
votes
1answer
17 views

Ubuntu not shutting off [duplicate]

So I just installed Ubuntu 14.04 and it won't shut down after updating, I have to manually shut it down by holding the power key, it happens when I either try to restart it or shut it down. Anyone got ...
2
votes
1answer
79 views

Acer Aspire power management

I'm working to fix my Acer Aspire One netbook so that power management is working. Currently, it goes to "suspend" when either the lid is closed or it is idle. However, it must still be using ...
2
votes
2answers
10k views

Asus H87-PRO /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed

On an Asus H87-PRO: $ sudo pwmconfig # pwmconfig revision 5857 (2010-08-22) (...) /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed here's the output from $ sensors: ...
2
votes
3answers
452 views

Laptop freezes whenever I unplug/plug in AC adapter

I have a Samsung Series 9 laptop, model NP900X4C. For a long time now this laptop has had issues with the battery and AC adapter, like this, which got fixed about six months ago: ...
0
votes
0answers
41 views

Toshiba Satllite e45t Ubunut 14.04 - Heats up quickly, low battery life compared to windows 8.1

I bought a Toshiba Satellite 45t recently with factory windows 8.1. Did the usual UEFI and secure boot disablement and proceeded with installing Ubuntu 14.04 - dual boot with the Windows. Three days ...
1
vote
1answer
20 views

Is used content of memory saved to disk during suspension?

When suspending 14.04 on a laptop, is the used part of the main memory saved to the disk? I.e. is suspension save-to-ram or save-to-disk? If yes, saved to the swap partition or other partition? ...
0
votes
2answers
132 views

Power management and overheating

I have a HP envy 14. And dual booting windows 8 and Linux ubuntu 14.04. The problem is that it sometimes gets a little hotter than when booted with windows. Also I see that Linux "eats" the power. ...
0
votes
1answer
20 views

Setting to High Performance

When I had Windows 8.1, there was a power option for "High Performance" which allowed higher performance at the cost of power supply. Is there a way to set my power option to "High Performance" on ...
2
votes
2answers
99 views

Automatic wake from suspend when power restored to laptop

I'm using a Chromebook with Ubuntu 14.04.2 LTS installed as an embedded system of sorts. I've figured out how to have it automatically suspend when disconnected from power by adjusting the power ...
0
votes
0answers
19 views

Power management issues on my laptop

Yesterday I figured out that my System76 laptop isn't charging at all when it's both plugged in and turned on. IMHO it should charge at least a little so that when I grab it on the way out the door in ...