Pi power

• pi is micro-USB
  
• http://www.pidramble.com/wiki/benchmarks/power-consumption
  

Config

• Main config:
  

  sudo raspi-config
  

• http://elinux.org/RPiconfig
  
• stop GUI (ligthdm) in runtime:
  

  systemctl stop lightdm
  

Check Raspbian, GUI, Release version

• sb_release -a

  returns this:
  

  No LSB modules are available.
  Distributor ID: Raspbian
  Description:    Raspbian GNU/Linux 8.0 (jessie)
  Release:        8.0
  Codename:       jessie
  

• cat /etc/rpi-issue

  returns this:
  

  Raspberry Pi reference 2016-05-27
  Generated using pi-gen, https://github.com/RPi-Distro/pi-gen, 5add7283d4db4eaad785de41a6750e909e5a04cf, stage4
  

• uname -a

  returns:
  

  Linux raspberrypi 4.9.35-v7+ #1014 SMP Fri Jun 30 14:47:43 BST 2017 armv7l GNU/Linux
  

Pi + Rasbian: disable & uninstall stuff

• Wifi & Bluetooth
  
  • To check if Wifi is available:
    

    iwconfig

  • Bluetooth:
    

    systemctl status bluetooth

  • Turn off Wifi & Bluetooth
    In /etc/modprobe.d/raspi-blacklist.conf add:
    

    #wifi
    blacklist brcmfmac
    blacklist brcmutil
    #bt
    blacklist btbcm
    blacklist hci_uart
    

• Swap
  Check:
  

  sudo systemctl status dphys-swapfile

  Disable:
  

  sudo systemctl disable dphys-swapfile

• Turn off Audio ?
  
• /boot/cmdline.txt
  
  • smsc95xx.turbo_mode=N
    
  • isolcpu
    
• Links:
  
  • https://plone.lucidsolutions.co.nz/hardware/raspberry-pi/3/disable-unwanted-raspbian-services

GUI, KIOSK MODE

• LXDE: LXPanel
  

Kiosk mode

• matchbox-window-manager - window manager with just one window
  
• kweb, minimal kiosk browser, manual, forum description
  
• Disable screen-saver, energy star, etc... Simply, keep it always-on:
  

  xset s off
  xset -dpms
  xset s noblank
  

June 2017 - Raspberry Pi Desktop

2016 - 2017 PIXEL

• modified LXDE.
  
• lightdm
  
• more: https://www.raspberrypi.org/blog/introducing-pixel/