Questions related to power management, particularly power saving measures.

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2answers
65 views

Computer shuts down after some hours of sleeping while unplugged

When I put my computer to sleep, close its lid, and unplug the power from the wall, then it will shut down automatically after about 2 hours. It is not like the battery is dying, because when this ...
0
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2answers
111 views

Battery capacity dropped from 97% to 30%. Is it ubuntu's problem?

I have MSI laptop (CX61 2QC). I have purchased it recently (about 1 month ago). I have made a installed ubuntu installed in it. Yesterday when I was using it the battery capacity was showing 97 %. ...
1
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0answers
76 views

15.10 on Asus Zenbook: Hanging at shutdown with power plugged in

I have an ASUS Zenbook UX305 and I've installed Ubuntu 15.10 on it. Everything works fine, except that when I have the power cable plugged in and do a shutdown I think it must hang just as it's about ...
0
votes
1answer
26 views

Battery icon on top-right takes a long while to come after switching from Unity to GNOME Desktop

I've recently switched from unity to ubuntu-gnome-desktop on my inspiron laptop running 14.04 LTS. After I reconfigured gdm as primary display manager and logged into the new desktop, I faced two ...
0
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0answers
24 views

What Are Charge Profile and Charge Accuracy?

In Power Statistics Window, selecting Laptop Battery from left menu, then going statistics tab, we have "Charge Profile", "Charge Accuracy", "Discharge Profile", "Discharge Accuracy" graph types. ...
4
votes
1answer
90 views

Can I prevent a named application changing the CPU's frequency?

I have an Intel server. The CPUs are power managed between 800MHz and 3GHz, using the p_state driver. Obviously it's drawing less power and making less noise when it's down at 800Mhz. Most of the ...
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0answers
15 views

Ubuntu HWE upgrade trashes battery life

I've been using 14.04 for a few months on my Lenovo W541 (coming from 12.04) and battery life has been good - about 8 hours. I implemented the usual power saving tips. However, immediately after ...
0
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1answer
44 views

My power/battery indicator applet is a red exclamation point

I've just upgraded from 14.10 to 15.10 and my power indicator applet is messed up. It shows up on my panel as a red circle with an exclamation point in it. I've tried it with different icon themes, ...
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0answers
21 views

Windows battery features on Ubuntu?

I have an Asus ux303LB and the battery management features that the Windows OS allowed me to use were great, however since I've started using Ubuntu I noticed that the battery management isn't as ...
3
votes
1answer
33 views

Scheduling power off and on of my headless server

I want to schedule power off at 23:30 and power on at 6:30 everyday. Here are some problems: If I run such command sudo rtcwake -m off -l -t $(date +%s -d 'tomorrow 06:30') it switches off the pc ...
0
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0answers
68 views

Xubuntu 15.10 - fail to suspend

I am running xubuntu 15.10 on an lenovo s10e. I must say I use suspend feature quite a lot. Sometimes though when I suspend, screen stays black, all netbook's lights stay on and also fan stays on. ...
3
votes
1answer
32 views

Can the System Drive Be Spun Down After Certain Idle Time?

I am trying to spin down my HDD after a certain amount of idle time to save power since I am running Ubuntu Server on a laptop. I know that it is possible to spin down additional drives, but according ...
0
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2answers
51 views

Setting Screen Timeout on Ubuntu Using the Command Line

I'm running Ubuntu Server on a laptop. I want to set the timeout to 0 or close to that so that the screen will be off unless I wake it.
1
vote
1answer
138 views

Change power options for Ubuntu Server via terminal

I have installed Ubuntu Server 14.04 on a laptop. I want to change some power management options from the terminal (I don't have GNOME or a GUI installed, and I don't want to either). The current ...
0
votes
0answers
66 views

pm-hibernate does not fully power off…but hard reset brings back session. How do I fix this?

I am using a Thinkpad W510 with Ubuntu 14.04. When I execute sudo pm-hibernate, the screen shuts off and is processing with just a black screen and a cursor (with the power light on) for about 15 ...
2
votes
1answer
76 views

Can i get more battery life than this?

router@router:~$ lsb_release -a && uname -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 15.10 Release: 15.10 Codename: wily Linux router 4.2.0-23-generic ...
0
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0answers
44 views

Ubuntu restore from suspend sometimes doesn't work, requires two reboots?

I am running Ubuntu 14.04 with the latest updates installed. When I attempt to resume from suspend nothing happens. I have to press the power button to start the pc normally. However, when it boots ...
3
votes
0answers
66 views

Laptop dying during suspend after 2 hours. Suspend/hybrid not working

So I have a yoga s1 and recently installed ubuntu. Twice now when I close the lid and go into suspend the computer will rapidly drain power from the battery in the span of 2 hours then die shortly ...
2
votes
0answers
73 views

Power Suspend inconsistently working

I have a Ubuntu 14.04 desktop. I rely on the power suspend to suspend my system when I am inactive for longer than 30 minutes. For some reason, this doesn't always work. I came to my system ...
0
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0answers
84 views

Shutdown and reboot not work

I installed Ubuntu 15.10. on an Ideapad 100. I encounter a problem whenever I shutdown or restart; I get past the shutdown text screen and the screen goes black, my computer doesn't power off. I have ...
3
votes
2answers
29 views

How to check how long the last uptime if it's not shutdown correctly?

I need to check battery life of some batteries while powering my machine (a BeagleBone). My plan is to plug it in, leave it, and check some time later. If it's dead, then I need to know how long it's ...
0
votes
1answer
32 views

external 3TB USB disc will not stay powered off

Running Ubuntu desktop 14.04, and having problems powering down an external USB 3TB drive. hdparm -y /dev/disk/by-uuid/736gyh3juhg64 doesnt work because of G_IO: bad/missing sense data, sb[]: ...
1
vote
1answer
34 views

All programs are closed after lid is closed

I have Lenovo Y570 with Ubuntu 15.10 installed on it. Whenever I close the lid and then open it, I see the log-in screen, and if I type in my password, I find that all my programs from last session ...
0
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0answers
102 views

Ubuntu 14.04 battery indicator showing status of the mouse battery

I am using Ubuntu 14.04.3 LTS 64-bit and the battery indicator always shows the status of the mouse battery when my laptop is plugged in. I tried every setting possible and even re-plugged the nano ...
0
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0answers
63 views

Lenovo ThinkPad 11e uses power while hibernated and wakes when on open lid

I have a Lenovo ThinkPad 11e, running Ubuntu 14.04 with XFCE desktop. When I hibernate the system an image is written to disk, and when the system is restarted it resumes from this image. Everything ...
0
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1answer
131 views

HDD Standby - High Load Cycle Count

I know that there are many question about this topic. However, I did not find a solution for my situation. What I want to achieve: My HDD (Hitachi Travelstar 5k1000) in my notebook should go into ...
1
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0answers
39 views

How to make udev update battery status more often?

Ubuntu battery icon uses about 1-2 minutes before recognizing charger being plugged in or out. How to make the battery status update more often so that it recognizes the charger immediately. The ...
0
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0answers
21 views

How can I select which battery discharges on my laptop?

So I have two batteries in my work laptop, Lenovo T450s. I have Ubuntu Mate 15.10 on it. It always discharges one of the batteries before going on to the next one. Is there any way to set thresholds ...
0
votes
1answer
140 views

Asus zenbook UX501 hangs when lid is closed

I just installed Ubuntu 14.04 on my Asus UX501JW. I've managed to fix most of the initial problems (hotkeys). But I still have the problem that the computer freezes if I close and open the lid without ...
1
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0answers
49 views

My Battery Precentage keeps going Up and Down?

I recently started using Ubuntu 14.04.3 LTS on my Asus K53E laptop, and it was working pretty well since September. But in November I noticed the original battery started get old & hold less of a ...
0
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0answers
40 views

Slow text rendering (scrolling) in several editors after enabling dynamic power management

I'm running Ubuntu 14.04 LTS on an HP EliteBook 8530p laptop. Ever since I found out how to enable the dynamic power management on the open source radeon driver, it helped greatly to reduce ...
3
votes
1answer
60 views

How to shut down the computer safely by pressing the power button?

So this is pretty simple: when I press the power button whilst the machine is on, it comes up with a menu (of which one of the options is to shutdown) However, I just want it to just start shutting ...
3
votes
1answer
97 views

How can I disable suspend during download, but the screen will still shut down?

I'm on Ubuntu Gnome 15.10. I am regularly downloading large files (~800 MB), but I have a very slow Internet connection. It usually take a relatively long time to download it. Since I am not ...
0
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0answers
38 views

Fix bad battery level detetction

I'm using Ubuntu 15.10 on a MacBook Air, early 2014 model. The battery level detection has never been very good but at least it could properly detect when the computer was running on DC or AC power. ...
1
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0answers
178 views

MacBook Pro 15" won't wake up after suspending or closing the lid in Ubuntu 15.10

Whenever I close the lid of my Macbook Pro 15" (2015 model) or suspend it, my screen becomes black but all my keys stay lit up. I then cannot wake up the laptop or get to the login screen. The only ...
1
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0answers
172 views

Ubuntu Gnome 15.10 doesn't suspend

I'm having an issue with Ubuntu Gnome 15.10 (also had the same issue with 15.04 before making a clean install of 15.10). When closing the laptop lid, the computer shuts down instead of suspending. ...
0
votes
1answer
49 views

Battery behaving erratically

I have got Ubuntu 14.04 on my HP Pavilion g4 2049tx laptop. The battery indicator is behaving erratically. It goes to critical mode (<10%) immediately after reaching 57%. It charges up pretty ...
0
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0answers
47 views

PC not powering off after shutting down

I have a Media PC running the Ubuntu minimal install. This problem occurs for quite a while now and across multiple installs. Right now Im running ubuntu 15.10 with kernel 4.2.0 because I thought it ...
0
votes
1answer
26 views

cut power to a drive?

I am currently trying to turn off the power to one of my hard drives but am unable to via hdpram, but I have had some success using the gnome-disk-utility. I am wondering what command does ...
0
votes
2answers
599 views

Asus zenbook UX303UB does not resume from suspend (ubuntu 14.04) when charging

I've just purchased Asus Zenbook UX303UB which came with Windows10. I replaced the original system with Ubuntu 14.04.03 LTS and now I have one issue - the laptop does not resume from suspend when I ...
4
votes
1answer
101 views

Turn off screen by pressing the power button

Is there any way to configure the power button so it turns the screen off? I now use a script running xset dpms force off to turn off the screen. Is it possible to edit /etc/acpi/powerbtn.sh ...
0
votes
1answer
69 views

Battery saver mode in ubuntu and mint [duplicate]

I have gone through sites and instaled various battery saver tools like tlp lui I actually dont remember their exact name. But non of those helped to save my laptop battery. Windows 8.1 gives me 3 to ...
0
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0answers
34 views

USB Autosuspend & External Soundcard

I'm currently experiencing a problem with my external sound card. It works perfectly fine as long as there's something playing, be it via a media player or browser videos. The problem is, after a ...
1
vote
0answers
23 views

Can't access Ubuntu 15.04 Power Settings screen

Opening Settings works, all the sub-categories work, but if I go to System Settings and then click the Power icon, the Settings app hangs and has to be force-quit. No crash report is available--it ...
0
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0answers
40 views

Problem uninstalling laptop-mode-tools

I am new to Ubuntu and was playing around with some battery saving tools. I first installed tlp, tried it and uninstalled it. Then I got laptop-mode-tools using tar and uninstalled it using ...
0
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0answers
37 views

Ubuntu server on laptop stops responding when I close lid

I have been trying for a couple of hours to get an ubuntu server to not freeze when I close the lid. When I close the laptop the server freezes and I can't restore it, I have to press the power button ...
0
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0answers
70 views

Battery Indicator does not show correct state

My battery indicator does not show the correct state. The battery indicator, and the indicator in power settings, both remain unchanged from the state the machine is switched on. If I switch on ...
0
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0answers
36 views

PC won't come back when lid is closed and monitor attached

I am using Xubuntu and regulary lock my screen at work. It is attached to a external monitor (primary display) and the lid is closed. After locking it only comes back when I open the lid and press ...
0
votes
1answer
93 views

Ubuntu 15.10, if I suspend from toolbar it's ok, if I close laptop lid when I resume it keeps logging me out

So as the title states: Ubuntu 15.10, if I suspend from toolbar it's ok, if I close laptop lid when I resume it keeps logging me out / going to lock screen after 10-20 seconds. I have a razer ...
0
votes
1answer
80 views

Dell Inspiron 5423 CPU low-power state Non-Dell Power Adapter

So I've been trying for hours now to get the CPU out of the low power state. The Processor is a Dual-Core with HT @1.8ghz however because im not using a Dell Adapter its missing the protocol chip that ...