Questions related to power management, particularly power saving measures.

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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. ...
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0answers
19 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 ...
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0answers
27 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 ...
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0answers
25 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 ...
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3answers
215 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-------------------- ...
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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 ...
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1answer
21 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 ...
1
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1answer
52 views

ubuntu 14.10 issue with suspend

I have a Acer Aspire E5-571G-52FL and when try to suspend (when lid is closed for example) it not wake up after that. Only black screen and nothing. Could you please help? Thanks! 3.16.0-33-generic ...
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0answers
58 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 ...
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1answer
23 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? ...
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1answer
47 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 ...
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0answers
24 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 ...
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0answers
29 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
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1answer
27 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 ...
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0answers
60 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
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3answers
190 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
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0answers
25 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
87 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
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2answers
120 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 ...
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0answers
47 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 ...
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0answers
75 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 ...
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2answers
146 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 ...
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0answers
36 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 ...
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2answers
172 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, ...
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1answer
70 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. ...
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0answers
20 views

System no longer shuts down or wakes up from suspend after enabling hibernate

I recently tried to enable hibernation in Ubuntu 12.04 for my Acer-Aspire-S3. This resulted in catastrophic disaster--the laptop no longer shuts down correctly (it freezes at the Ubuntu logo) nor ...
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0answers
12 views

Conflict in Power Settings rating and Battery reading in menu

I have conflicting battery status readings when viewed in the dropdown user menu vs that shown in the Power Settings dialogue (which is the correct reading of the two). In fact, the status in the ...
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0answers
73 views

Ubuntu 14.04 power manager not working

The power manager has suddenly stopped working on my Ubuntu. It shows plugged in and 100% charged all the time. I'm using dual-boot with Windows 7 and the Windows power management tool is working ...
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0answers
93 views

Please help! Blinking orange lights on laptop, battery not charging

I have just made a fresh Ubuntu 14.04 installation on a Toshiba Satellite L735 laptop. When I turn on the laptop and it is plugged to the socket, the battery icon does not show ("Show battery status ...
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0answers
48 views

Suspend-resume-shutdown errors

System Description: I am running a laptop (Dell Inspiron 14-5447) with Linux kraftlj-Inspiron-5447 3.16.0-31-generic #43~14.04.1-Ubuntu SMP Tue Mar 10 20:13:38 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux. ...
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0answers
22 views

pm-suspend works, but clicking on “suspend” from GUI menu does nothing?

If I run sudo pm-suspend, it suspends correctly, and resumes too. No issues. But the OS timeout setting of "5 Minutes" from the "Power" menu in settings does not suspend the machine. Also, the GUI ...
0
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1answer
15 views

Power Management - OnSleep hook

Is it possible to have a script invoked when my PC decides to sleep or when it is put to sleep manually. What I am trying to do is to have a script that will take down my VPN and the SSH key, when ...
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0answers
70 views

Hardware incompatibilty HP proliant DL380 e Gen8 and pacemaker/corosync . Ubuntu 14.04 LTS

We have 4 servers HP proliant DL380 running Ubuntu 14.04 LTS. We have frequent kernel panics in all the servers at the same time, and we consider that are related to the way the these servers manage ...
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0answers
89 views

Ubuntu machine waking up immediately after suspend, need help solving it!

So I've Googled a bit and it seems this is a well known issue. I just need some assistance with my particular setup. I have Ubuntu 14.04 loaded onto a machine that I use as a Plex Server. I've ...
2
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1answer
81 views

Unable to revive computer from suspend mode in Ubuntu 14.04 on Thinkpad

I have recently installed Ubuntu 14.04 on my Thinkpad E440. Though I generally don't use Suspend option, but whenever by mistake I select that option, my laptop goes to low power state as expected. ...
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0answers
31 views

Problems opening Ubuntu 14.04 on my laptop (when using battery power)

I had Ubuntu 14.04 installed on my laptop, but for some time (possibly since before 14.04 was installed) did not use battery power, relying on the power adapter. I recently bought another battery and ...
0
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0answers
79 views

How to wake up my Laptop from sleep (suspend) when AC charger connected

In my area, electricity turned off for some periods, so I configured my laptop to goes to sleep when battery percent 10%, but I want it to wake up after AC charger is charging on. is there any way to ...
0
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0answers
80 views

Ubuntu loses network connection and dpms becomes re-enabled after unplugging AC adapter on Macbook Pro

On Ubuntu 14.01, when I unplug my AC adapter, the network connection is lost (even with connected to wired via eth0). Also, the dpms settings are lost. So even though I run "xset -dpms", that setting ...
0
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0answers
45 views

Ubuntu 14.04 LTS Keeps Shutting Down Following Feb. 2015 Updates

I've never had this problem before, but the Ubuntu 14.04 LTS keeps shutting down if I'm away from the keyboard for any meaningful length of time. This has been the case since the most recent Feb. ...
4
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2answers
297 views

Enable full performance on Sandy Bridge laptop

I have 2nd gen Intel i7 laptop. I use Thermald and tlp for managing battery life (they are great!). However, sometimes I don't care about noise and power consumption, and want the CPU to run at full ...
7
votes
1answer
172 views

Entirely disable suspension (at kernel level? - has to be independent of used DE and login state!)

Once again I need a workaround to deal with my almost broken notebook graphics card: It does not wake up after suspending! The Ubuntu 14.10 system is waking up, but the display stays off, so I have ...
0
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0answers
170 views

NVIDIA force GPU to AC performance state

I have a Dell M6800 and a K4100M and Optimus disabled on 14.04. When it is not on the official DELL 230W charger, the system will limit the GPU to lower power states. Even when just on battery, the ...
0
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0answers
111 views

xubuntu 14.10 failing to sleep after inactivity - power manager error

After waiting well beyond my scheduled "sleep when inactive" time, the computer is still awake. I wiggle the mouse and unlock the machine to find an error notification in the upper corner, it read as ...
0
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0answers
32 views

Cannot boot to Ubuntu, Powercap/SELinux Issue

I am running Ubuntu (well, Lubuntu, really) on my home server, and all was tickety boo until a few days ago, when the OS stopped booting. Not being able to SHH in anymore, I hooked it up to a monitor ...
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0answers
108 views

Logind.conf HandleLidSwitchDocked

I've been trying to do a clamshell mode setup for my computer and I've seen many suggestions to use HandleLidSwitch=ignore. However this is not really what I want to do since I only want to keep the ...
0
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1answer
146 views

Battery discharges while AC is plugged in

I have a problem with my VN7-571G-56N0. My battery is discharging while the AC is plugged in. If i plug in the power cord, after i used the notebook with battery only, it charges it, but when i ...
0
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0answers
48 views

Suspend doesn't work after cloning SSD with Ubuntu to the identical MacBook Pro Retina

I have cloned the whole SSD (using the dd command) with fresh Ubuntu 14.10 installation from one MacBook Pro 15" Retina Mid 2014 to the identical MacBook Pro model (the old MacBook's screen was ...
0
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0answers
19 views

power indicator stuck after standby

As said, my power indicator gets stuck every time when my laptop wakes from standby (and I guess from STD, too), if I removed or plugged in the power adapter in the meantime. It displays the last ...
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0answers
50 views

My Sony Vaio VGN-N31M/W will not boot without the power cable plugged in

My Sony Vaio VGN-N31M/W only boots with the power cable plugged in. The screen simply hangs on the Grub screen, it loads when acpi is disabled but the laptop is then very slow and can not recognise ...
0
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0answers
38 views

My laptop stops working when I open the lid after some period of time

Recently my laptop started to freeze when I reopen the lid after some period of time. The only thing that helps is to hold the power button for a few seconds and boot the laptop again. I have no idea ...