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

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Turning off screen when lid is closed

How to disable auto suspend when I close laptop lid? explains how to disable suspension on lid close, but this method leaves the screen on, which is useless. How can one make the screen sleep while ...
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2answers
32 views

How to set up an emergency power-off keyboard shortcut on Linux?

Some times when my laptop wakes up from standby or hibernation the screen backlight won't turn on and I can barely see anything in a dark room and just can't see anything when I'm outdoors. The only ...
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17 views

Arch Linux Server: How to spin down HDDs in a BTRFS Raid5 configuration?

This is my first question here; after extensive research I had to reach out for help. I’ve build a home server based on Arch Linux. It basically has two main purposes: running a Plex Media Server and ...
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Fan starts when watching videos through browser plugins on Macbook with Arch

On a Macbook Air (2012) running Arch, after watching a show on Netflix with Google Chrome for ten or 15 minutes, the fan starts; this hardly ever happened with Mac OS. Can something be done?
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32 views

desktop: how to enable sleep from lock screen?

I sometimes find I have just "awoken" (resumed from suspend to memory) my Debian-8-running device only to find I must do something else. At that point I am confronted by my "lock screen" (i.e., the ...
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1answer
17 views

Display and network card not working if booted without a display

I'm facing a kind of a mysterious problem. We have a PC with Debian 8 installed. It boots fine and works well, unless I try to boot it wihout a display. So, I shutdown the PC, unplug display and then ...
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17 views

Issue with resume after suspend to disk

I am having an issue with the suspend to disk feature for ARM Linux Kernel version: Linux 4.2.0-rc3-00115-gc5dfd65-dirty #4 SMP PREEMPT Fri Jul 24 12:15:54 CEST 2015 armv7l GNU/Linux I can suspend ...
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25 views

Kali Linux Rolling not getting powered off and neither restarts

Kali Linux Rolling doesn't get powered off, neither does it restart! When I attempt turn off / reboot, the system freezes and does not respond. A black screen with nothing visible keeps on displaying ...
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43 views

linux mint 18 battery indicator showing “using battery power” even while being plugged in to AC power

I am facing this problem ever since I installed Linux mint 18 on my asus-pro laptop. I have dual-booted Linux alongside windows 8 in BIOS mode(NOT UEFI). I have noticed that the battery indicator in ...
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0answers
8 views

Screen remains blank even after keypresses

I'm using Debian Stretch. By default, my monitor blanks after some minutes of idle time in my X session About two weeks ago, after some update I suppose, I noticed that my screen does not 'return' ...
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1answer
40 views

Check sleep settings from command line?

How does sleep work on a Linux (Debian) box? I do not usually use the box with a keyboard and mouse. I usually SSH into it. Does it sleep, but then "wake up" when I connect to it? What if I were ...
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3answers
92 views

How to Distribute Computing of `tar czf` for Longer Time?

My systems go under heavy load when I run sudo tar czf /media/masi/ntfsDisc/backup_home.tar.gz $HOME/ Fans goes to max etc. I would like to find a better balance between computing and power ...
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18 views

Linux disconnects monitor when it goes to sleep

When my LG W2442PE monitor goes to sleep, then -- I think -- Debian 8 considers it gone completely (as if it was unplugged), and Gnome reconfigures itself to use only one screen, the laptop internal ...
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2answers
129 views

Strange things happen when I close my laptop lid

I recently bought a new HP Spectre x360 laptop and installed Linux (Ubuntu 16.04 LTS 64 bit) for the first time. I have noticed a few small bugs but something very strange happens when I shut the ...
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1answer
41 views

rtcwake not working on Ubuntu 14.04 installed on MacBook Air (mid 2012)

I have installed Ubuntu 14.04 GNU/Linux on a MacBook Air (mid 2012). I'm trying to use rtcwake to implement a "delayed hibernation from suspend", as in https://askubuntu.com/a/33192 (the particular ...
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37 views

Custom command when pressing Power Button on GNOME 3.20

I'm using GNOME 3.20 (on Archlinux, with systemd and no acpid). Since GNOME only allows three options as actions for when pressing the power button (hibernate, sleep, or nothing), i'd like to execute ...
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2answers
69 views

Explanation of file - org.freedesktop.login1.policy

I am using Ubuntu 16.04. There is a file located at /usr/share/polkit-1/actions/org.freedesktop.login1.policy which seems to control the permissions regarding shutdown/suspend/hibernate options. ...
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2answers
55 views

Can lower swappiness speed up wake-up from hibernate?

Does anyone use swap? what is your swapiness value? Mine are 60 $ cat /proc/sys/vm/swappiness I use hibernation. It worked but slow to load when wake-up.. If I tune swappiness from 60 to 10. Does ...
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0answers
18 views

Mint + Kernel 4.5.4: laptop loses suspend state when unplugged

I'm using Linux Mint 17.3 on a newish Asus laptop with Mate desktop. To get the Nvidia graphics and Elan touchpad both to work, I installed the 4.5.4 Linux kernel. I've pretty much got everything ...
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0answers
12 views

How can I run a command if my screen changes state from standby to on and vice versa

I'm running linux mint 17.3. I have a backlight attached to my screens which are controlable via usb-serial. I would like to turn off the backlight automatically when the screens go to standby and ...
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0answers
51 views

Force xfce4-power-manager to suspend

I would like my power button to suspend - no questions asked. xfce4-power-manager would like my power button to suspend - but only after I have been asked: An application is currently disabling ...
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1answer
66 views

Is possible not to turn off an SSD in suspend/sleep/S3?

I'd like to keep the SSD (or HDD, it doesn't really matter though) powered on, even if I suspend (S3) the computer and prevent it from turning off during the sleep time. Is it somehow possible to ...
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0answers
14 views

On LMDE 2, why is my screen dimming after only a few seconds?

I'm running LMDE with Cinnamon 2.4.7 and I cannot get the screen to stay on (undimmed) for longer than a few seconds of inactivity. What setting am I missing?
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2answers
70 views

Is the power management on different linux distributions the same?

I was wondering if the power management is the same across all linux distros? If no, what are the specific differences? I.e. can changing the distro possibly solve power management issues? Background:...
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1answer
120 views

Better battery saver linux between ubuntu mate and xubuntu

I have tried xubuntu, lubuntu and ubuntu mate. I found xubuntu and ubuntu mate desktop environment good. My main concern is battery saving. Which saves better battery between Ubuntu mate and xubuntu
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1answer
226 views

How to turn off Wireless power management permanently

In Linux Mint 17.3 iwconfig says the power management of wireless card is turned on. I want to turn it off permanently. sudo iwconfig wlan0 power off works, until I reboot the laptop. I read some ...
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1answer
93 views

Does Powersave Mode on the CPU help at all to save power?

I use indicator-cpufreq with Cinnamon to control my CPU-usage and save power, as my battery life has been running low. So, I use indicator-cpufreq to put my CPU in powersave mode. However, I have this ...
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1answer
215 views

Most power efficiend linux distribution for laptops [closed]

I have done through lots and lots of online resources to learn about power management techniques in linux mint. Suggestions were using power top, laptop mode kind of methods but doesn't help. Most ...
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208 views

USB ports do not wake up from suspend to RAM

I have an AMD Athlon 5350 (desktop, not a notebook) and recently upgraded from openSUSE 13.2 to Tumbleweed (openSUSE's rolling release). After that I gave suspend to RAM another try after it had just ...
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3answers
493 views

Switch off display and Lock screen in Xfce power manager when laptop lid is closed?

I have a Dell XPS 13 (2015 model), and I'm using Ubuntu 15.10 with Xmonad. I have xfce4-power-manager running and gnome-screensaver is used to lock the screen. In the settings dialog of xfce4-power-...
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143 views

FreeBSD throttle cpu clock on high temperature

I'm using a laptop with bad cooling system, so my CPU sometimes hits very high temperature, and linux kernel is able to throttle cpu clock to cool it as I can see in dmesg: [22612.245243] CPU3: Core ...
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0answers
26 views

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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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
74 views

Detect power loss

Is it possible to detect loss of power on a laptop/desktop without an UPS? Obviously a computer without an UPS will shutdown at least almost immediately after being unplugged/having its battery ...
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1answer
365 views

upowerd consuming 100% cpu

upowerd is consuming nearly 100% of CPU. I am currently affected by this issue on both a Lenovo Thinkpad E520 and on a desktop PC running Core i7 and Asus Z170a motherboard. Both run Kubuntu 15.10. ...
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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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0answers
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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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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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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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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0answers
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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1answer
408 views

Debian 8 hibernate and suspend not working

I've read these two official documentations on the matter: https://wiki.debian.org/Hibernation#Suspend_and_hibernate_configuration_in_Debian_Jessie https://wiki.debian.org/SystemdSuspendSedation I've ...
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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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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
309 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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1answer
608 views

Trouble changing backlight brightness (/sys/class/backlight folder empty)

I have a small embedded system that I am working on that needs to be able to reduce its brightness for power saving reasons. The screen is connected by LVDS with separate Inverter Power Output ...
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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. ...