Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

Questions tagged [power-management]

Power Management is a feature of electrical appliances to enter a low-power state when inactive to reduce energy consumption.

191 questions
89
votes
3 answers

How much energy does the Raspberry Pi consume in a day?

My searching efforts have failed when trying to find this. On average, how much energy does the Raspberry Pi consume in 24 hours (minimal usage vs. max usage in a day and USB vs. Micro-USB powered)?
Zero
  • 933
  • 1
  • 8
  • 16
65
votes
6 answers

Disable screen blanking in X-Windows on Raspbian

We intend to use a RPi at work to drive a status display panel - it will show our project's bug status and a few other statistics of vital importance. I've been trying stop the screen-saver from blanking the screen with no luck. I've used the…
Salim Fadhley
  • 2,035
  • 4
  • 19
  • 13
37
votes
9 answers

Will any external battery power a Raspberry Pi?

I am working on a project that needs the Raspberry Pi to work without a mains connection. I have considered buying a 50000mAh USB power bank. Would this power a Raspberry Pi, and if so, would it power it for more than 24 hours?
Joel
  • 537
  • 2
  • 5
  • 5
35
votes
3 answers

Disable LAN9512

The LAN9512 is the hardware device which controls Ethernet and USB ports. This chip consumes almost 200mA, and it will be very useful to disable it to save energy when I don't need USB or Ethernet. The LAN9512 datasheet explains some states of the…
aleixrocks
  • 566
  • 1
  • 4
  • 8
26
votes
4 answers

Make "iw wlan0 set power_save off" permanent

Q How can I make iw wlan0 set power_save off permanent for stretch? What's the proper way to do it? Edit I'm using an r-Pi 1 Mod. B with an Edimax wifi dongle and Raspian stretch.
participant
  • 981
  • 2
  • 8
  • 20
16
votes
2 answers

How to make the Raspberry Pi consume less power

What methods can be used to reduce the amount of power a Raspberry Pi uses?
Darth Vader
  • 4,218
  • 24
  • 47
  • 70
16
votes
4 answers

Pi Headless: How to confirm that the Pi is shut down

I am running my Pi headless connected to my wireless router using a ethernet cable. I wanted to shut down the pi remotely even when I am not connected to it using SSH/Putty to shut it down exclusively. I put a question here: Shutting down my Pi…
Kangkan
  • 398
  • 2
  • 8
  • 22
11
votes
2 answers

Is it possible to create a keyboard shortcut that acts as an on/off switch?

I just got a RaspberryPi and I'm completely new to linux and all the intricate details of programming. My issue with the RaspberryPi is the difficulty with turning it on and off. After doing some research, it seems that there are boards out there…
Kinser
  • 111
  • 1
  • 3
11
votes
1 answer

System not shutting down properly

I'm running Arch, and when I shut down with the poweroff command (or with shutdown -h now) the 3 LEDs mentioned stay on. In addition, if I've plugged it into a screen, it displays > POWER OFF System halted but doesn't actually power off - this…
DenverCoder8
  • 228
  • 1
  • 6
10
votes
3 answers

Creating halt/wake button?

I have rigged up a wake-from-halt button using pins 5 and 6. These two pins, when connected, will reset power and reboot from halt. I want to use this same button, if I can, to run a command that, when pressed, will shut down the computer using sudo…
Ryan McClure
  • 225
  • 2
  • 10
10
votes
3 answers

RPi 3 - Reduce power consumption

I am looking to reduce the power consumption to a minimum on my RPi 3. For my project, the Raspberry Pi Zero is not an option. for now, I disabled Bluetooth and WiFi and made sure to kill some process when the PI is running on battery until the…
Senseh B
  • 203
  • 1
  • 2
  • 5
9
votes
3 answers

How to make Raspberry Pi suspend to RAM?

My application only uses Pi very occassionally and only a few seconds each time. It would be ideal if Pi supports suspend to RAM feature to save maximum energy. (I am thinking of the next step of powering Pi with batterries only.) My question is:…
Penghe Geng
  • 361
  • 1
  • 5
  • 10
9
votes
2 answers

how to disable raspberry pi power management?

I am using my raspberry pi as a headless server. The problem is that after a couple of hours of inactivity it seems to enter a power suspend state where it disappears from the web and refuses ssh connections. After having prodded it via ssh it comes…
Kenneth
  • 721
  • 1
  • 4
  • 11
9
votes
1 answer

Differences of Raspberry Pi models in GPU computation?

I know the publication Biosignal PI, an Affordable Open-Source ECG and Respiration Measurement System which uses Raspberry Pi A+ / B+ as a component isolated by ADums, since RP is not itself a medical device. The final system has been accepted to…
Léo Léopold Hertz 준영
  • 155
  • 10
9
votes
1 answer

How to achieve Low Power Consumption on Raspberry Pi via Software and Hardware control

Would like to enquire if anyone could list any/or all possible ways to achieve low power consumption on the raspberry pi. I have found that one could disable the USB ports of the raspberry pi . however i would require one of the usb port for my…
peekaboo
  • 97
  • 1
  • 1
  • 9
1
2 3
…
12 13