Questions related to power management, particularly power saving measures.

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0
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0answers
9 views

How do I enable the sleep settings in xubuntu?

The slider is grayed out and it won't let me move it. I have a feeling if I run Power Manager as root I will be able to change it. I don't know how though. I personally have no problem working ...
34
votes
8answers
85k views

How can I control HDD spin down time?

I have 2 HDDs in my PC. Ubuntu is turning off the secondary HDD very quickly after about 15 minutes, which is short for me. I need to control this time. How can I do it? I tried GNOME power ...
0
votes
2answers
85 views

Intel Power Management not working on ubuntu 14.04

I am new to Ubuntu. My laptop is Lenovo Z570 Intel® Core™ i3-2348M which i bought 4 year before. Still working as a hero :P Recently i switched to Ubuntu 14.04 64 bit. But it ended up in burning my ...
0
votes
1answer
28 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
votes
0answers
11 views

Battery status switch between charging/charged constantly after upgrading to 15.10

I've upgraded from ubuntu 15.04 to 15.10 just some days ago. Now I see that the battery indicator always switches every second between the notebook's and the mouse's battery. The notebook's battery in ...
0
votes
1answer
50 views

sedutil suspend

I'm using sedutil and LinuxPBA for full disk encryption on my Samsung Evo 850 SSD. Everything works fine, except that I am unable to suspend while encryption is "enabled" since the disk loses power ...
0
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0answers
9 views

Xubuntu - No video signal

I recently switched from Unity to Xfce on my HTPC with a clean install of Xubuntu. Now whenever I turn off my TV and let it sit for a while, when I turn the TV back on there is no video signal, even ...
0
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0answers
11 views

How to use IWCONFIG to set my wireless power management timeout/profile

Can I use iwconfig to set my wireless power management timeout? I don't know what can be done, but I read the man page on the command line and it has some configurations for power management. What I ...
0
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0answers
11 views

How to enable suspend using cron

I am using i3 as a windows manager, and battery low detection goes by the wayside... I sometimes find my PC drained and dead after leaving it to do some work. I found a couple of good battery low ...
0
votes
2answers
25 views

Ubuntu 14.04 unity shows wrong battery status

I am using ASUS laptop and the model is X555-50. I have ubuntu 14.04 installed with unity desktop. It used to show the correct battery status earlier. But suddenly it is not displaying the correct ...
0
votes
0answers
26 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 ...
0
votes
1answer
22 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
votes
1answer
32 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 ...
1
vote
0answers
53 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 ...
0
votes
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 ...
1
vote
0answers
32 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 ...
2
votes
1answer
68 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 ...
1
vote
3answers
610 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, ...
0
votes
0answers
15 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 ...
0
votes
0answers
18 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 ...
1
vote
0answers
26 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 ...
0
votes
1answer
33 views

Resume from Suspend closes applications

Just loaded Ubuntu 15.10 on my old HP E1 Vision and am very pleased with it. I have a minor issue in that if I Suspend using the power icon in the upper right corner of the screen, close the lid and ...
142
votes
22answers
145k views

Tips to extend battery life for laptops and notebooks

This question is present as a matter of historical interest. While you are encouraged to help maintain its answers, please understand that "big list" questions are not generally allowed on Ask ...
0
votes
0answers
28 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 ...
0
votes
1answer
4k views

Plugged in, battery not charging, not running down

This morning, after being plugged in all night, my Asus N550J, Xubuntu Saucy, showed 28% battery. When it is plugged in, it shows the Charging icon, yet the percent charge never goes up. When it is ...
0
votes
0answers
24 views

Is it safe to use ubuntu for my battery life [closed]

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, ...
0
votes
1answer
23 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 ...
8
votes
2answers
5k views

How do I get a wireless USB keyboard to to wake Ubuntu 13.10 from suspend?

My PC with Ubuntu 13.10 is set to suspend after 30 minutes of inactivity. Up until it suspends I can resume working at any time using my Logitech K400r wireless USB keyboard. The OS defect/problem ...
0
votes
0answers
12 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. ...
0
votes
0answers
17 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
votes
1answer
18 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 ...
3
votes
2answers
1k views

Please explain the parameters 'noexpose' and 'cycle' in xset

I have been trying for a long time to prevent my screen from blanking every 20 minutes. I understand there are many interlocking layers of applications that can do this and it is not straightforward ...
1
vote
0answers
79 views

Laptop instantly wakes from sleep/suspend when battery is low

I have an EliteBook 2570p with Ubuntu GNOME 15.04 installed. When the battery is low I can suspend the computer or put it to sleep, but it wakes up right away. For example, sometimes I am working on ...
6
votes
5answers
29k views

How to make my screen brightness not change when I plug my laptop in

I do not want my laptop to change brightness when my laptop power is plugged in or unplugged. I set my brightness based on how bright my surroundings are. If I am in a dark room, I set my brightness ...
0
votes
0answers
17 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
votes
1answer
21 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) ...
1
vote
2answers
51 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
votes
2answers
56 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 %. ...
9
votes
10answers
40k views

How to stop screen going black after 10 min

My OS is Lubuntu 13.04. After 10 mins of inactivity the screen goes black. What I did to stop it without effect: uninstalled xscreensaver completely in power setting I set to never blank the screen ...
1
vote
0answers
32 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 ...
7
votes
6answers
13k views

DisplayPort monitor not detected if switched off and on again

I am running Ubuntu Desktop 14.04 on a desktop PC with a Nvidia GTX 660 connected to a HP LP2475w 24" monitor over DisplayPort. It boots up fine, but if I switch off the monitor and switch it on ...
4
votes
1answer
89 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 ...
0
votes
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. ...
0
votes
1answer
60 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 ...
0
votes
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 ...
127
votes
11answers
124k views

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

I would like closing the laptop lid to be a no-op. How can I do that?
0
votes
1answer
26 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, ...
0
votes
0answers
17 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 ...
69
votes
18answers
72k views

How to prevent my screen from either dimming or the screen-lock starting when watching YouTube?

My screen brightness used to dim after a few seconds to preserve battery. This is default in Ubuntu 12.04. However when watching video it should not dim. This works correctly when I watch videos ...
3
votes
1answer
26 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 ...