Systems to manage power consumption, such as system suspension and hibernation, CPU speed adjustment, disk spindown, battery usage monitoring, …

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Run script on Gnome 3 suspend

I need to run a script on Gnome's standard suspend action (via top-right taskbar menu item, with Alt key pressed) Looks like Gnome doesn't use pm-utils, so I have no idea where to put my script
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0answers
61 views

Reduce CPU wakeups by cinnamon and i915

In order to reduce my notebook's power consumption I am using PowerTOP 2.5. hardware: Thinkpad W540 os: Linux Mint 17.3 Rosa kernel: 3.16.0-38-generic I noticed that cinnamon and i915 are the ...
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2answers
47 views

Running applications depending on battery or charging

What are good program or script solutions to run specific applications depending on whether the laptop is running on battery or charging? In order to conserve battery, I automatically want to stop ...
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1answer
135 views

How to disable Wifi Power Save on Kali Linux

I am running kali with virtualbox and my wifi receiver is a usb adapter which is Asus N10 Nano. I made the settings on virtualbox for making the vb recognize my usb wifi adapter. It works but after ...
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1answer
58 views

What is the power dissipation of the CPU and how does it work?

I'm looking into TLP and there is this setting that I don't know what does it do: # Set Intel P-state performance: 0..100 (%) # Limit the max/min P-state to control the power dissipation of the CPU. #...
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32 views

Why does my Debian desktop no longer power off when told to? [closed]

sudo poweroff and sudo shutdown -h now used to result in my machine entering the shutdown run level and powering down. These days the machine goes through the shutdown procedure but the power is ...
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0answers
63 views

Battery never stops charging!

I have a Manjaro Xfce latest version. My laptop is a Lenovo Z500. I've recently noticed that my batter is always at %99 and keeps on charging. Is there a way to make it stop charging at 99%, or ...
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2answers
10k views

Eject / safely remove vs umount

I'm using Ubuntu 12.04, and when I rigth click on a my flash drive icon (in the Unity left bar) I get two options that have me confused: eject and safely remove. The closer I came to answer was this ...
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1answer
26 views

Preventing battery from constant charging in Ultrabook

I'm running Debian Jessie (64-bit) on a newly-acquired Samsung Ultrabook NP900X3E, so far everything's working as it's supposed to. However, the battery life is okay, but not great. Therefore, I ...
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0answers
9 views

Phone battery charging

Smartphone's battery charges when it is linked to an USB port. Is there a way to make the process faster by modifying some parameters in Linux?
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3answers
2k views

Gnome 3: how to set power button to shutdown instead of suspend?

I am using GNOME 3.18.1 on Arch Linux 4.2.5-1-ARCH x86_64 on a Dell E6530 laptop. Since I installed this OS years ago, the power button on my laptop has always led my OS to completely power down. ...
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1answer
152 views

card reading killing my battery, on macbook pro running Debian

I am currently using a macbook pro but the operating system is debian 8.2 not os x I am using a macbook pro but there's this one device that's just draining a lot of power. This USB device: Card ...
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2answers
630 views

Hard disk drive spins up on laptop sleep/wake, can I stop it doing this?

I have in my Arch Linux-running laptop an SSD and an HDD; the latter I use seldom. It is mounted as /mnt/sdb5 and configured to spin down proactively when on battery (/etc/default/tlp, ...
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27 views

Is the current power management (battery) in Linux efficient enough like Windows? [duplicate]

I am actually traumatized by my experience in 2011 using Linux on bare metal in regards to battery. The laptop came with Windows 7 Home. I got around 4 hours when using battery. After 4 months, I ...
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0answers
49 views

HowTo Suspend / Sleep / Spin down disks in RAID - Creted by the debian installer?

I have created a RAID 1, with two disks using the debian installer. The RAID is used in my server. Due to the fact that it's a private server and I don't care about performance but more about ...
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2answers
2k views

Disable suspend/sleep mode completely on Fedora 21

I connect to a Fedora 21 workstation with SSH, but after several minutes not using the connection the system go to sleep and I loose my connection. So how can I disallow completely the system to go ...
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7answers
5k views

OS X: how to keep the computer from sleeping during a ssh session

When I ssh into a OS X computer on my network the session lasts until the OS X goes into sleep mode. Is there a way to prevent this from happening during my SSH session, apart from physically bumping ...
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0answers
228 views

Debian Jessie suspend problems - how to force system to use pm-utils instead of systemctl

I have an Acer Aspire One Netbook with a Radeon GPU, using the firmware-linux-nonfree (20151018-2~bpo8+1) drivers, which work fine except for hibernate and suspend. When resuming from either, the ...
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4answers
11k views

Get power consumption of a USB device

Is there a way to check how much power a USB device requires? Why do I need this? I need to connect an LTE USB stick to my Raspberry pi, and don't know how much power it needs. We got it quite ...
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2answers
17k views

How to Reset/Cycle Power to a PCIe Device?

I have a PCIe device that only works correctly when the computer is fully powered off then on again. Issuing a simple reboot or reboot -p command does not appear to cycle the power to the PCIe card, ...
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0answers
19 views

Thinkpad T61: Udev-rule not working

I'd like to create a special udev-rule to improve the batterylife of my thinkpad T61 by set the brightness to a low value if the power supply is unplugged and my laptop using the battery. Therefore I ...
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1answer
308 views

How do I enable laptop settings in debian?

I have just installed debian jessie and have installed laptop-mode-tools. However, looking on the Laptop Mode Tools page, not only is there a plethora of options, but it also says this software should ...
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6answers
8k views

Screen turns on automatically (xset dpms force off)

I am using xset dpms force off to manually turn my screen off to save power. However, it turns back on after some time (20 - 40 seconds). Distro: Ubuntu-Lucid Graphics: Intel 4500 MHD ...
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0answers
40 views

How to automatically load a new VID&PID to module usb_serial

I have a 4G module that requires me to run echo '03f0 581d' > /sys/bus/usb-serial/drivers/generic/new_id after every startup/resume to make the modem visible. How should I make this automatic? ...
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1answer
263 views

Prevent USB hard drive enclosure from powering off after inactivity

I have successfully used 'hdparm' to disable APM (Advanced Power Management) on external USB hard drives. Now I've come across a USB hard drive enclosure that itself turns the installed hard drive ...
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1answer
174 views

How to disable fade to black for the fullscreen console

After a while of inactivity the fullscreen console fades to black until I press a key. I want to disable the fade to black on my fullscreen console running in a VirtualBox. I'm running Debian 8 ...
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0answers
374 views

Huge battery drain during suspend to ram - 12%/hour - nvidia card doesn't turn off

UPDATE: So I tracked down the issue. It seems the nvidia card powers up right before suspend. This is expected bbswitch behaviour: [ 4195.214014] bbswitch: enabling discrete graphics But for ...
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0answers
174 views

Triggering Linux shutdown on power failure

I have an embedded Linux system (currently running Angstrom) with supercapacitor hardware to provide time for writes to complete and avoid corrupted filesystems when external power is removed. ...
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1answer
373 views

Laptop battery doesnt raise from 59% (ie showing wrong battery stats )

iam using LinuxMint-17.2 Lenovo z500 fixed Nvidia gpu issues (installed bbswitch successfully ), also fixed Screen backlit issue iam only left with this battery issue Battery indicator is not stuck ...
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0answers
43 views

Laptop does not work without power source

Installed manjaro linux to the laptop today and discovered that it is not working with disconnected power source. Here is dmesg output: And upower -d: Manjaro 15.9, kernel 4.1.8, Cinnamon DE (if ...
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1answer
21k views

Turning off power to usb port. Or turn off power to entire usb subsystem

I have a usb lamp which I specifically bought in order to turn it off programmatically at a certain time, thus I need to remove the power to its usb port. I believe I have a usb-hub at usb6. The lamp ...
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1answer
326 views

Ubuntu Server monitor goes to sleep in 10 minutes [duplicate]

Is there a possibility to disable the monitor sleep in Ubuntu server 14.04? After 10 minutes my monitor goes to sleep. I've already tried several options, from http://superuser.com/questions/152347/...
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0answers
176 views

Xubuntu 14.04 does not suspend; instead it freezes and blanks the screen

For the past 2 weeks, ever since I've updated my kernel to 3.16.0-48-generic, my suspend option in the xfce4-session-logout popup fails to work most of the times. The screen switches off, but the ...
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0answers
6 views

How to allow hibernation on Linux mint 17 [duplicate]

When I press the power button and the window with power options(shut down, log off, etc) shows, it doesn't include hibernation. I know hibernation is different from suspension, so how do I allow my ...
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0answers
59 views

How to prevent closing lid events when system hibernates?

I'm using Linux Mint XFCE 17.2 (V-init), kernel 3.16. When I choose hibernate or shut down in xfce-logout dialog and close the lid immediately - notebook suspends. But it should ignore lid event for ...
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1answer
253 views

System event on AC adapter insert or battery unplugged?

Does Ubuntu 15.04 (or maybe just Linux in general) have any sort of measurable event that fires when a laptop's AC power is disconnected and the unit flips over to battery power? I would like to ...
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1answer
301 views

Install powernap on debian?

I just read about powernap here but don't know how to install it.. Download and untar was simple: axel https://launchpad.net/powernap/trunk/2.20/+download/powernap_2.20.orig.tar.gz && tar -...
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0answers
162 views

poweroff nvidia gpu

lspci result: $ lspci -nn|grep -iP "NVIDIA|Radeon" 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Pitcairn PRO [Radeon HD 7850] [1002:6819] 01:00.1 Audio device [...
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2answers
728 views

Hibernate not working in Linux Mint 14 KDE after nvidia driver update

I've had some problems with the X server ramping up CPU usage, so I wanted to check if it goes away to a new Nvidia driver. I was at 304.xx and jumped to 319.49. Now, every time I try to hibernate, I ...
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1answer
214 views

Lenovo Laptop won't charge above 59%, Elementary Os Freya (Ubuntu 14.04 LTS based I hope)

When I had windows I used lenovo energy managment and set the battery to charge up to 60% only as it recommended it to me. Yesterday I switched to Ubuntu and now I have this problem. It would be great ...
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3answers
6k views

How do I make Powertop's suggestions permanent?

When I run Powertop, and look at the Tunables screen, about twenty things are listed as Bad. I can toggle these to Good by pressing enter, and when I do so, projected battery lifetime doubles. How ...
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1answer
77 views

tuned on fedora 22 - setting different alpm policies for specific devices

I'm trying to configure alpm to max_perfomance on my system disk, medium_power on my data disks and min_power for backup disks. I tried various variations in tuned.conf but the result is that the last ...
0
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1answer
65 views

Which distro to switch to (laptop) [closed]

I switched to Linux Ubuntu 14.04 from Windows 8.1 about a month ago because I wanted to get more out of my laptop (Lenovo Flex 2). I have been trying to either solve or ignore some issues that I have ...
12
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1answer
286 views

Disks (in usb enclosure) keep waking up even when not mounted

Setup I have USB enclosure (Buffalo DriveStation Quad) containing four drives connected to my nas server (ubuntu server 14.04). The enclosure is configured to JBOD mode, so I'll see all the disks in ...
2
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1answer
34 views

Why doesn't copying large files prevent Linux from going into power saving mode?

This problem happened to me when copying backups from an SSD to an external SSD. As suggested in the answer there, I had to change my power settings to set "suspend when inactive" to "never" in Debian ...
0
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1answer
533 views

Battery indicator problems after installing and uninstalling kubuntu-desktop package on Xubuntu 15.04 x64

A few weeks ago, I decided to get adventurous and install different interfaces on my Lenovo T420 running Xubuntu. I decided to jettison Kubuntu after trying it out (just not my style) and kept Xubuntu ...
2
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1answer
788 views

NMI received for unknown reason 20 — Do you have a strange power saving mode enabled?

I am using Debian GNU/Linux 7.8 (wheezy). While running my MATLAB program today, I got this message in terminal. Message from syslogd@sas21 at Jul 18 16:40:49 ... kernel:[1747708.091929] Uhhuh. NMI ...
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3answers
4k views

Debian Wheezy rebooting instead of powering off

I'm having a weird issue with my Debian Wheezy desktop. When I try to shutdown the system (either from Gnome or from the command line with shutdown -h now) the computer automatically reboots. The ...
1
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1answer
179 views

What changed in Linux kernel (2.6.22) that gives hdparm support for power-on in standby?

Hdparm man page lists for parameter -s: Enable/disable the power-on in standby feature, if supported by the drive. VERY DANGEROUS. Do not use unless you are abso- ...
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1answer
1k views

Turn system on by USB keyboard?

To hibernate my Debian Wheezy system, I run the following command: sudo sh -c 'echo disk > /sys/power/state' To wake up the system, I can press any key on my USB keyboard. My understanding of ...