Questions related to power management, particularly power saving measures.

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1answer
8 views

Turn off display while lid is closed but prevent sleep on ubuntu server

I am currently running ubuntu server 14.04.3 on a macbook. I have managed to close the lid while preventing the system from sleeping but it does not turn off the display however it does turn off after ...
0
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1answer
25 views

Turning the brightness completely down

I used to run the command xbacklight -set 0 to make my brightness effectively 0 i.e. it was almost impossible to see anything, which was really helpful for conserving my battery power. However having ...
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0answers
24 views

Laptop battery keeps discharging even after full charge (not switching to AC)

The laptop does not switch to AC mode after fully charging. I dualboot and this problem is nonexistent on Windows 10. But on Ubuntu 15.10 it just keeps discharging. I tried fully charging(which never ...
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0answers
29 views

When lid is closed, no internent connection

new to linux and ubuntu so please show some understanding :) im using an external monitor with my laptop, and when i close the lid (already set up the power management so nothingks will happen when i ...
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0answers
12 views

Harddisk spinning when plugging/unplugging laptop

Im setting power management on my linux as I'm using laptop. I found on the internet that one good software is TLP, which helps power management. I have Acer Aspire V15 Nitro which have combination of ...
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0answers
23 views

Shut-down/Restart/Power-up “work” as Suspend on a Lenovo g50-70 running Ubuntu MATE 15.10

As the title suggests; when it comes to shut-down/restart both suspend the laptop unless I go with sudo -shutdown which works as expected. When powering-up, it goes through the GRUB (since I'm ...
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0answers
15 views

Screen locking and energy saving does not work when using ethernet connection

I have Kubuntu 15.10 installed on three computers, and on all three computers, I have "Screen Energy Saving" and automatic screen locking enabled in the system settings. On desktop 1, both screen ...
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0answers
23 views

i3 throttled at 500Mhz when battery under 30%

I have the following problem. As soon as the battery drops below 30%, the CPU is being throttled to 500Mhz. As soon as I plug in the power adapter, it goes back to normal. The laptop is a Lenovo ...
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0answers
16 views

Laptop battery started discharging rapidly in 15.10, even during suspend. Powertop points to wlan0

I don't know the exact timeline of this problem but my Dell L502X XPS 15 laptop is having battery problems . Symptoms Battery discharges very rapidly (like, in 1 hour) when in use (instead of 4 ...
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0answers
20 views

Ubuntu Server Power Management - Advanced Settings via Terminal

How to configure power settings for Ubuntu Server 14.04? Desktop is not installed. My server is plugged to a UPS (battery) and the battery is connected to the server as well to monitor how much power ...
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0answers
22 views

Is it safe to use ubuntu for my battery life

I have a Dell Vostro 2526 dual booted with Windows 7 and Ubuntu 14.04. I'm not very new with Ubuntu and have some previous experience. Like many people I'm also facing huge battery draining issues, ...
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0answers
10 views

Headless wont boot without screen connected

For a couple of years I have been running a little PC as a headless server with 14.04. I recently upgraded the hardware, and used DD to copy the hard drive to the new drive and new mother board. ...
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0answers
16 views

Power Errors after commissioning in MAAS

We are having a problem with MAAS. We succeed in commissioning servers and MAAS is able to do it, but afterwards we are getting Power Errors. Our setup consists of two Dell Power Edge 1950 BIOS ...
0
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1answer
22 views

Laptop shuts-down when power ac is unplugged on Ubuntu 15.10

I've been searching the web for answers regarding this issue but most are outdated, and don't work for me, I tried to locate/apps/gnome-power-manager/general on dconf-editor but it seems that the ...
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0answers
13 views

LXDE battery monitor not warning when battery is low

I am running Lubuntu 15.10. In prior releases, I would receive a low battery warning, but now, though Battery Manager shows an accurate remaining battery indicator, I get no pop-up warning when the ...
0
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1answer
21 views

Where can I configure iwconfig wlan0 power on/off?

I've noticed that my wlan0 interface has power management on even when I am plugged in. I can turn it off with sudo iwconfig wlan0 power off, but it turns on again at reboot or when I unplug my ...
0
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1answer
18 views

solid state drive corrupts with sudden power loss

running xubuntu 14.04. I have a kingsoft ssd installed. When there is an unexpected power loss the drive gets corrupted causing me to have to re install. I read that unplugging the drive (of course) ...
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2answers
50 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 ...
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2answers
51 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 %. ...
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0answers
26 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
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1answer
17 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 ...
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0answers
63 views

Resume from hibernation randomly gets blackscreen on 15.10 [closed]

My Clevo P650SE randomly gets black screen after resume while returning from hibernation. I'm using it as alternative for the suspend because it is using a lot of battery while suspended since it is ...
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0answers
8 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
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1answer
87 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
13 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 ...
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1answer
25 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
16 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
23 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 ...
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0answers
36 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
20 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
30 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
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1answer
48 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 ...
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0answers
33 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
65 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 ...
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0answers
27 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
1answer
40 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 ...
1
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0answers
29 views

Battery not charging anymore at all [closed]

My laptop battery stopped working. It does not charge beyond 3% anymore, and when I remove the power cable, the laptop is immediately switched off -- as if there was no battery at all. The battery is ...
2
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0answers
65 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
60 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
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2answers
25 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
25 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
28 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
42 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
31 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
votes
1answer
46 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 ...
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0answers
24 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 ...
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0answers
16 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
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1answer
50 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
28 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
20 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 ...