Questions related to power management, particularly power saving measures.

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1answer
179 views

Display battery percentage for mouse and keyboard

I've recently bought myself a new Logitech wireless mouse and keyboard set. To get these working in Ubuntu 14.04, I first paired them (unifying USB) using Winblows then I installed Solaar. The issue ...
0
votes
1answer
134 views

hdparm will not set spindown for disks 14.04 server

I have 4 HDD, one WD and 3 Identical generic brands. I have edited /etc/rc.local to change hdparm -B to 127 for the 3 generic drives (WD is unsupported and probably handles itslef) and -S to 180 for ...
7
votes
1answer
249 views

Is it possible to disable a notebook's LEDs temporarily? (HDD, Power, Charging)

My question is whether it is possible to run a terminal command (or anything else) to disable a laptop's indicator LEDs. I have LEDs for CAPS, NUM and WiFi which are off anyway. But when it is dark ...
2
votes
1answer
67 views

How to put system to sleep instead of hibernate?

I am a newbie to Ubuntu, there doesn't seem to be any option to put the laptop to sleep instead of hibernate (suspend). Is there any way to put it to sleep instead?
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2answers
156 views

Power management and overheating

I have a HP envy 14. And dual booting windows 8 and Linux ubuntu 14.04. The problem is that it sometimes gets a little hotter than when booted with windows. Also I see that Linux "eats" the power. ...
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0answers
54 views

Can't suspend Ubuntu

I have an HP n008tu x360 laptop and whenever I click suspend from the menu the screen goes blank, the power button stays lit and I still hear the fan. On Windows, when I click sleep, I can't hear ...
0
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0answers
181 views

How to stop brightness changes (screen dimming) on low battery?

Ubuntu 14.10 automatically adjusts screen brightness on low battery. It does so despite explicitly being set not to. How to prevent this behaviour? I'd like the brightness to stay on the manually ...
0
votes
1answer
115 views

Power management failure and /usr/bin/sudo must be owned by uid 0 and have the setuid bit set

A few days age I purchased a new laptop, Asus X751MD, and I installed the 64 bit Kubuntu version of 14.10. After installing some programs and restarting the computer, I got the power management ...
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0answers
61 views

power button on fluxbox: how to “intercept”

When I press the power button, my computer shuts off. No warning. It is a software shutoff (A "ubuntu screen" apears for a time). This is inconvenient for me, because the power button is the only ...
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0answers
41 views

inspiron 1720 ubuntu 14.04 no battery switch over after removing power. power indicator is at 52%

Basic problem: NO battery switch over after removing power. It just dies. My battery indicator is gradually going down - currently its at, 52%, over the last five weeks from 62%. All suspension ...
0
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0answers
47 views

Battery management on Ubuntu

It seems like battery management in ubuntu is not as good as in Windows (at least for me), The battery in windows last for longer time. Another thing My laptop is on charge most of the time, but ...
0
votes
1answer
253 views

Maas Check Power State - Error: Unknown power_type 'ether_wake'

I have etherwake installed and Maas can use it to power on the nodes, but it can't shut them down and the "Check power state" button yields the error: Error: Unknown power_type 'ether_wake'. Am I ...
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0answers
16 views

Run command as root when waking from suspend

The mechanical hard drive on my netbook keeps spinning up and down. That makes an annoying sound and is bad for its health. I run sudo hdparm -B 254 /dev/sda and that stops it untill a suspend/wake ...
1
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0answers
442 views

MATE - Missing Suspend and Hibernate buttons, pressing power button shutdowns system immediately

I'm on Ubuntu 12.04.5 with all updates and with MATE 1.8.1 from PPA. With recent update I can't suspend or hibernate from mate-power-manager. If I press the power button the system shutdowns ...
1
vote
0answers
26 views

System restarts whenever ethernet cable is connected (and system is not connected to power source)

I have a strange problem with my Ubuntu 14.04 system. If my laptop is not connected to a power source, and I plug in my ethernet cable, the system restarts. It's an AMD processor with ATI radeon ...
0
votes
1answer
75 views

laptop monitor brightness always maximum upon charging

My laptop monitor brightness is set to maximum whenever I connect it to charging. I have gone to the brightness settings and changed this, but the problem repeats when I charge my laptop again...what ...
0
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0answers
126 views

Battery percentage won't go up while charging

I have HP notebook with a healthy battery. Problem is that when I try to charge it, system displays time remaining to charge and also percentage of the charge in the menu bar, but it stays stuck on ...
0
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0answers
11 views

Command to sleep (put into low power state) and scheduled task to wake back up [duplicate]

I can use sudo pm-hibernate to put my laptop into a low power state, but I have to press the power button to turn it back on. Is there a way I can put it into a low power state that can then be turned ...
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0answers
96 views

USB external HDD spins down, but just from command line. I must be missing something

I have two different external USB 3.0 hard drives connected to my Ubuntu computer and none of them auto spin down after 10 mins. Funny thing, if I run a Windows 8.1 virtual machine and attach the ...
1
vote
1answer
316 views

How to temporarily disable sleep and hibernate from the command line

It seems like there are many ways in which a Ubuntu's settings can be permanently manipulated to sleep when desired as long as predetermined conditions are met. However, these are more permanent ...
0
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0answers
133 views

Openbox and xfce4-power-manager

I am using Ubuntu and openbox. When I start up, I see the normal login screen like when using unity and it connects to Wifi. I have selected openbox from the dropdown list and it remembers this ...
0
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0answers
43 views

Is there any way to make Ubuntu not to suspend while a download in progress?

Is there any way to set the system not to suspend while a download in progress but only turn screen off?. My OS is Ubuntu 15.04.
1
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1answer
97 views

SED (self encrpyting disk) is crashing on system resume

I have asked this question before (here and here ) My problem is that my Self Encrypted Disk (SED) have to NOT spin down even on suspend! I have tried this, but it did not work and the disk spin ...
0
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1answer
58 views

How do I get my power indicator to reliably warn me before shutting off my laptop?

A while back I was having trouble because my power indicator for my laptop running Ubuntu never warned me when the power was about to go off. That was when using Ubuntu 14.04, and to be honest, I ...
0
votes
1answer
206 views

Screen dim while brightness set to max on Xubuntu 14.04 everytime display turns off

I used to have an issue where every time my laptop would return from suspend, the screen was fully dim (as if brightness was at a minimum) even though the brightness setting was set to maximum - so I ...
0
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1answer
79 views

USB Power Saving Settings

I have a USB weather station. If the screensaver kicks on (blank screen and lock), data from the weather station stalls out. I can lock the screen manually and I have no issues at all with the ...
0
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0answers
153 views

Wake on LAN cause computer wake up immediately after shutting down

I've installed Ubuntu on my Dell PC, and i want to use Wake on LAN. But here i encounter a weird problem. The computer will wake up immediately after shutting down. Here is what i've done: The ...
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0answers
104 views

Battery efficiency issue in Ubuntu 14.04

I have an HP Probook 440 G2, with an intel core i5-4210U processor. I have dual boot windows 8.1 installation. I get approx 5+ hours of battery backup in Windows 8.1 and approx 2+ hours in Ubuntu. My ...
0
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1answer
235 views

how to disable charging in ubuntu when battery level is above 80 percent?

I tried various tutorials to stop charging laptop battery but it is not working on my Lenovo laptop. I tried following commands: sudo apt-get install tp-smapi-dkms sudo modprobe tp_smapi ...
0
votes
1answer
476 views

How to set hibernate/shutdown timers? XFCE power manager not having an effect in Lubuntu

I like to fall asleep listening to internet radio or a streaming video. I would prefer to have my computer go into hibernate mode an hour after I've become inactive, not 15 minutes after. I would ...
0
votes
1answer
169 views

Charging only ever reaches 95%

I am using Ubuntu 14.10. And my computer is always attached to an AC power source thus it is always charging. But I have noticed that my battery says it is charged when I click on the battery icon in ...
1
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0answers
180 views

Confused about Light Locker/Power Manager settings in Xubuntu 14.04

In Xubuntu 14.04, Light Locker and Power Manager settings are different control panel views, however, there are screensaver settings inside Light Locker's one. Anyway, there's no screensaver options ...
1
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1answer
65 views

Energy Saving on Ubuntu PC's (not Laptops!) [duplicate]

Can I use software designed for power saving on laptops on Home PC. (not a laptop) Or maybe someone could suggest alternative tools designed for saving power on PC desktop? What are the other steps ...
0
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0answers
198 views

Power Management

I'm running Ubuntu on an Acer Aspire V Nitro - VN7-571G laptop. The battery should last for 8.5 hours with Windows 8.1, but with Ubunt the battery drains in about 3 hours. Acer has no drivers for ...
0
votes
1answer
81 views

Laptop Brightness not remembered on Power Plugged in

On Ubuntu 14.10 Utopic, using a Samsung Notebook laptop, I can change the brightness correctly and it is remembered upon wake from sleep. However my problem is that when my laptop is on battery and I ...
0
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0answers
78 views

How to dump selected iwconfig outputs to text files? (to analyse Tx-power, bit rate, link quality, etc. for EMF reduction)

BACKGROUND I've read about Electromagnetic Field (EMF) pollution and I want to protect myself. I have a not bad solution for my smartphone, now decided to tackle WiFi. It appears that power of the ...
1
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0answers
68 views

Macbook 9,1 Ubuntu 14.04 keyboard issues on resume

I have read many similar post and tried nearly all post to no avail. Screen and keyboard illuminates; but no keys actually work. (I tried the F6 trick too) Trackpad does allow me to move the ...
2
votes
3answers
852 views

Laptop freezes whenever I unplug/plug in AC adapter

I have a Samsung Series 9 laptop, model NP900X4C. For a long time now this laptop has had issues with the battery and AC adapter, like this, which got fixed about six months ago: ...
1
vote
3answers
686 views

How to shut down Lubuntu immediately with the power button instead of a logout method dialog prompt

I would like the computer to shut down directly after I press the power button. At the moment, Lubuntu opens a shutdown method dialog box when I press the shutdown button. I suspect I can simply ...
2
votes
0answers
533 views

How to disable automatic brightness adjustment in Ubuntu 14.04?

I am running Ubuntu 14.04 LTS on a Dell 3542 laptop. My problem is that screen brightness changes depending on content. I think this is called automatic (or dynamic) brightness adjustment, as I stated ...
0
votes
0answers
88 views

Laptop hangs instead of suspends when closing lid

I have a HP Pavilion DV6 laptop with Ubuntu 14.04 LTS dual boot with Windows 8. Not every time but occasionally if I close the laptop lid it does not suspend as it should, but hangs with the power ...
1
vote
1answer
134 views

Laptop lid power options

How do I configure my laptop to perform in the following manner in Ubuntu 14.04.1 Server? Current State When the laptop is powered on and the lid is closed: External screen loses signal Laptop enters ...
1
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0answers
124 views

GRUB boot options in Refind

I'm trying to lower the power consumption on my Macbook Air with the steps at https://help.ubuntu.com/community/MacBookAir6-2/Trusty#Finetuning_Powersave_functions but I can't seem to get tlp stat to ...
2
votes
0answers
186 views

Battery not working/charging but detected [closed]

i have a thinkpad t 410 and ubuntu 14.04 LTS installed. everything worked fine for a long time, but since a week or so my battery is not working properly any more (orange battery light flashing) it ...
1
vote
1answer
427 views

Ubuntu 14.04 EliteBook 8460p constant fan, hot, short battery

Finally took the plunge from Ubuntu in VM to wiping Windows and installing Ubuntu 14.04. I'm liking it so far although I've noticed the laptop gets hot very quickly, the fan is constantly on, and the ...
1
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0answers
93 views

Ubuntu (14.04) freezes on laptop when disconnected from power

I have Ubuntu 14.04.1 installed along windows 7 (dual boot). My laptop is a HP Compaq 6710b which has an Intel CPU and an Intel graphics card. When I boot my laptop on the power adapter, no problems ...
0
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0answers
33 views

Power management policy for all users

I have a machine with one administrator user and one standard user. Is it possible for the admin to set a power management policy (suspend after 30 minutes of inactivity, for example) that the ...
1
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0answers
103 views

Ubuntu (14.04) freezes on laptop when power not inserted

I use Linux Mint 17 Qiana (on Ubuntu 14.04.1). My laptop is a Dell Inspiron M5110 which has an AMD CPU and an AMD graphics card. When I boot my laptop on battery, no problems occur. When I boot my ...
1
vote
1answer
449 views

How to repair powerstate (intel_pstate) on Intel Haswell chips?

I recently installed tlp on my Lenovo U430p laptop. After I runned it I noticed significant drop in my laptop's on bettery time. Now my laptop lasts on battery for 2 hours less than before. After ...
1
vote
1answer
504 views

Turn power OFF of USB Ports - Ubuntu 10.04 machine

I have Ubuntu 10.04 based portable touchscreen computers at workplace and sometimes people would use USB data cable to charge their phones from the USB port. Now I have usb storage access disabled ...