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

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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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1answer
2k views

No gnome-power-manager command but it is installed on Arch

I'm running latest Arch, have GNOME and Fluxbox and my main windows manager is Fluxbox. I wanted to manage my power settings in Fluxbox and i added gnome-power-manager in startup but is says there ...
3
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3answers
16k views
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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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1answer
451 views

How to give more power to a USB device (error -110)?

I’m trying to mount an external hard drive (2.5", USB, no separate power supply) on Debian 7, but it gives me (in dmesg as well as when trying to boot with the device connected) errors like: ...
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0answers
28 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
385 views

Can I read settings in BIOS without restarting Ubuntu

Can I read my bios settings under Ubuntu without restarting? For example, I'd like to check the sleep settings in my BIOS, S3 (suspend) or S4 (hibernate). As of now, I can't hibernate, and am ...
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1answer
31 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
11 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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1answer
268 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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2answers
732 views

Screen brightness reverts to max after returning from `xset dpms` display suspend

I'm running the openbox window manager and using this line in my autostart.sh to control display power management: xset dpms 0 60 0 This works nicely, causing the display to suspend after 60 ...
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3answers
31k views

How to disable USB autosuspend on kernel 3.7.10 or above?

I've updated my HTPC from kernel 3.7.10 to 3.10.7 and it seems CONFIG_USB_SUSPEND is now gone from the kernel options and included in PM. The main problem I'm facing is that I have an external HDD ...
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2answers
41 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? ...
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1answer
93 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
87 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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3answers
300 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 ...
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1answer
76 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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2answers
2k views

Shutdown my (backup) hard disk on Linux when I don't use it

I have a hard disk in my computer that I use to make backups of my data. I do not use this disk otherwise. How can I stop this disk from spinning once my backup is finished? Also how would I make it ...
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1answer
108 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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1answer
486 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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0answers
142 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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0answers
107 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
24 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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1answer
38 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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0answers
48 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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0answers
212 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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2answers
45 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
105 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
46 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
53 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 ...
7
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2answers
8k 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 ...
3
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1answer
25 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. ...
5
votes
1answer
125 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
570 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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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
38 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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9answers
7k views

How can I get an alert when my battery is about to die in Linux Mint?

This happens to me more than I'd like to admit, but sometimes I don't notice the power getting low since it only shows up in my status bar, then the computer just quits. I'd like a big alert that ...
2
votes
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 ...
20
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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 ...
0
votes
0answers
180 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 ...
16
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4answers
10k 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 ...
9
votes
2answers
15k 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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1answer
3k views

CentOS 7 cpupower not setting the CPU's to maximum

On my machine, i have power savings disable on the BIOS. When I run Ubuntu on this machine, the CPU's are running maximum at 2100 MHz. However, when I'm running CentOS 7, even with the scaling ...
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0answers
18 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
152 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 ...
12
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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
32 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? ...