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

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why hibernate button was lost in the linuxmint-18's menu list?

I'm new to linuxmint 18 for several weeks, when I start my computer and click the menu button, then click the shutdown button (left-bottom corner), it alert these choices: choices with hibernate ...
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5answers
25k views

How to find power draw in watts? [duplicate]

I've been asked to estimate the power consumption of the servers I run for my laboratory. I thought and I'd ask if there was some handy linux commandline to get the power consumption of the server. It ...
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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 isn'...
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2answers
36 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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0answers
26 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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0answers
53 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 ...
13
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1answer
1k views

Monitor connected via displayport to DVI adapter won't sleep properly

I have a monitor connected to my machine that displays odd behavior when entering power saving sleep mode. When entering sleep, the monitor will alternate between blanking and displaying a default ...
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0answers
11 views

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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0answers
35 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
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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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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1answer
549 views

Prevent Mint from suspending while playing music in Spotify

In Linux Mint 17 I have Suspend when inactive for under Power Management set to 10 minutes. The problem is that the system suspends even when I'm listening to music using Spotify. Is there any way ...
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0answers
21 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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0answers
29 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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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' ...
2
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1answer
41 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 ...
3
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2answers
134 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
391 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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3answers
93 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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2answers
77 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 ...
14
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9answers
8k 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 ...
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0answers
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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1answer
46 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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2answers
71 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
4k views

How do I make my laptop sleep when it reaches some low battery threshold?

I'm using Ubuntu, but I have i3 as my window manager. Under i3, when my battery reaches 0%, the computer will just abruptly shut down, no warning or anything. Is there a simple script or ...
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0answers
39 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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0answers
19 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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1answer
244 views

How to switch power save mode between PS Poll and UAPSD (WMM) modes in CLI?

I'm trying to figure out if there are any chances to switch on/off U-APSD power save mode at my laptop. Currently I found a command to switch power save mode on/off: root@host # iw dev wlan3 set ...
6
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2answers
4k views

“Memory corruption detected in low memory” kernel messages?

I have some memory corruption detected in low memory messages. I have read about it here, but I'm afraid I can't really make anything out of the discussion. It does indeed happen when I suspend/resume,...
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2answers
56 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 ...
0
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1answer
135 views

Powerbutton freezes applications

I've just installed Debian Jessie and I'm trying to get systemd to do basic power management. systemctl suspend and systemctl hibernate works well to suspend and hibernate the system. Now, I want ...
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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 ...
0
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1answer
472 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
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 ...
3
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1answer
469 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
68 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 ...
1
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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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1answer
410 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 ...
11
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2answers
749 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 ...
23
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3answers
34k 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 ...
2
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2answers
76 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
122 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
251 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 ...
3
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3answers
516 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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1answer
94 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 ...
3
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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 ...
0
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1answer
223 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 ...
0
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1answer
617 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
213 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 ...