Questions related to power management, particularly power saving measures.

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2
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0answers
15 views

Battery will not charge past 59%. I have no access to Windows or lenovo softwares anymore

I have an Ideapad Touch u430 that came with AOE licence. As it was recommanded, I used the Energy Manager to enable the Economy mode (I don't remember the exact name) that makes your battery stop ...
1
vote
0answers
22 views

Need to press the power button twice for Ubuntu 15.04 to boot

I have a dual boot set up (Windows 7/Ubuntu 15.04). I've recently upgraded from 14.04 LTS to 15.04 and since then, I have to press the power button twice. The first time it goes to GRUB without any ...
-1
votes
1answer
24 views

CPU frequency limit to 2000 on battery

I want set frequency to 2100 in battery mode but it have limit to 2000. I ran tlp ac and change CPU frequency with indicator-cpufreq to 2100 (and also check Performance) then check frequency with ...
1
vote
0answers
72 views

Reduced battery life with ubuntu 15.04

I'm using a Lenovo Z-5070 Ci7. I had a battery life of nearly 4 hours when I was using Ubuntu 14.04 LTS. After updating to Vived Vervet (15.04) my battery life is reduced to nearly 2 to 2.5 hours. ...
0
votes
1answer
47 views

Wireless power management turns back on in 15.04

I have turned off power management for my wireless. I did that in /etc/pm/power.d/wireless. When I try to connect to a network, the power management turns back on. So the connection fails. I try: ...
0
votes
1answer
56 views

How To Get Rid of This? Ubuntu is Definitely Consuming More Power Than Windows! [duplicate]

System details: Intel Core i5 2.50GH, Nvidia, 2GB RAM, 32bit O/S for both Linux and Windows. Well I have been using Ubuntu 14.04 LTS for nearly 1 week. I have noticed whenever my laptop runs on ...
0
votes
0answers
17 views

Unable to discover USB external HDD after entering power management

I have a USB-HDD attached to my box. The USB HDD will not be discovered by my linux after entering power saving. I already turned off the power saving through the command line tool, hdparm. However, ...
0
votes
1answer
34 views

Cant Change power profile ubuntu 15.04

I was using following command to change graphics card power profile in Ubuntu 14.10 got from Radeon HD 6950 temperature is way too hot. echo low > /sys/class/drm/card0/device/power_profile But ...
-1
votes
0answers
57 views

Vivid Vervet freezes after waking from suspend

After upgrading to Vivid my laptop (Lenovo y5070) freezes when waking from suspend. I cannot get a tty shell and after shutting down and rebooting with the power button, the mouse pointer is ...
0
votes
0answers
143 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
0answers
13 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
0
votes
1answer
21 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
30 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 ...
1
vote
0answers
144 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 ...
1
vote
1answer
1k 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 ...
1
vote
1answer
111 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 ...
1
vote
1answer
36 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 ...
0
votes
0answers
48 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
35 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 ...
-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
15 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 ...
0
votes
0answers
18 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 ...
3
votes
0answers
30 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 ...
3
votes
1answer
97 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: ...
0
votes
2answers
31 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 ...
1
vote
0answers
26 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 ...
0
votes
0answers
23 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. ...
0
votes
0answers
15 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
22 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
22 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 ...
-1
votes
2answers
110 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-------------------- ...
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
20 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 ...
0
votes
0answers
48 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
21 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
1answer
25 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 ...
0
votes
0answers
21 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 ...
0
votes
0answers
21 views

Lid closing behavior Ubuntu XFCE

I'm running Ubuntu 14.04 with XFCE 4.12. With this configuration, I cannot get the lock screen when the lid is closed. Ideas?
1
vote
1answer
22 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
47 views

Ubuntu 14.04 LTS battery indication wrong when unplugged

I just installed Ubuntu 14.04 LTS on my Asus R500V. When I used Windows 7, my battery would last for over 3 hours, but with Ubuntu the battery drains quickly per my battery indicator. Now the ...
5
votes
3answers
185 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
17 views

Action on low power when computer is sleeping

I usually suspend my laptop. But I don't know what my netbook does when the power is critically low and it is sleeping (maybe it turns on and performs poweroff process or it just stops power supply of ...
2
votes
1answer
81 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
104 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
41 views

Disable USB port

currently I have a pcDuino3 running Lubuntu 12.04 and I have some usb devices attached to it. I was wondering if it is possible to disable power to specific USB ports. I have looked at other methods ...
1
vote
0answers
57 views

How to use UPS with Ubuntu 14.04

Hello I have a UPS but can not see what procedure the battery and how to remain percent spending. Here I attach some photos looks like the battery of Ubuntu 14.04 The battery once it exists, and ...
1
vote
2answers
107 views

14.10: Battery indicator stuck on 64%

Yesterday I saw that when I plugged my laptop the battery indicator still showed me that I was on battery life instead of direct power. The percentage was 65% and after a few hours on power the ...
0
votes
0answers
27 views

How to disable SSD power down when suspend to sleep?

I have a laptop with a brand new SSD. And I read hint about disabling hibernation (I don't use it) and even let the SSD powered on while in sleep mode. The latter activates Active Garbage Collection ...
0
votes
2answers
137 views

External USB hard drive, WD Elements, not power off itself

I own a Seagate Free Agent external hard drive for last 4-5 years. After plugged in and finished with file transfers I will click menu 'Safely remove'. Then it will gracefully shut down itself, ...
1
vote
1answer
65 views

How can I tell Ubuntu 14.10 to do nothing when I close my laptop lid?

The issue is solved temporary using the method in this forum, but only if I have fresh boot, if i suspend my laptop and wake it again, Ubuntu will ignore my rules, and suspend when i close the lid. ...