User:Magick777/Opportunistic Power Saving
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<source lang="text">
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* Maintain phone in GSM mode by default (when on battery)
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#!/bin/sh
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# Test the current radio mode and abort if in 3G or dual mode already
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** Switch to 2G mode opportunistically when all seems to be quiet
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TEST=`dbus-send --system --type=method_call --print-reply --dest=com.nokia.phone.net /com/nokia/phone/net Phone.Net.get_selected_radio_access_technology | grep "byte [02]"`
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*** trigger by phone locked, but test the following
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if [ ! -z "$TEST" ]
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**** are we on charge? don't bother switching
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then
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**** are we on a call? don't break my 3G link
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echo "Phone is already in either 3G or dual mode, aborting."
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**** is 3G still required? work out how to decide
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exit 1
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***** are we using an application that should block the downgrade?
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fi
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***** analyse IP traffic flows or bytecounters?
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***** look for specific applications running
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***** allow one or two minutes cooling off period
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# Test whether the phone is on a call, if it is then don't mess with it
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** Switch to 3G when something requires it
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TEST=`dbus-send --system --type=method_call --print-reply --dest=com.nokia.csd.Call /com/nokia/csd/call/1 com.nokia.csd.Call.Instance.GetStatus | grep "uint32 0"`
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*** don't change anything if we're on a voice call
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#if phone is on call, grep filters out any call status but 0/idle, so we get a zero length output
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*** don't bother if we're already on WiFi
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if [ -z "$TEST" ]
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then
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echo "Phone is making or receiving a call, aborting."
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exit 1
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fi
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#Before we change the radio mode, check that we're not on WiFi
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TEST=`grep 1 /tmp/onwifi`
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if [ ! -z "$TEST" ]
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then
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echo "Phone is connected via WiFi, no point autoswitching to dual mode."
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exit 1
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fi
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# Make the change to 3G
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run-standalone.sh dbus-send --system --type=method_call --dest=com.nokia.phone.net /com/nokia/phone/net Phone.Net.set_selected_radio_access_technology byte:0
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</source>
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==/usr/bin/set2g==
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<source lang="text">
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#!/bin/sh
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# This script is intended to be run indirectly from dbus-scripts and to be triggered on
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# phone lock. It will then attempt to determine whether it makes sense to change the radio
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# mode to GSM in order to save battery life.
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# Test the current radio mode and abort if we're in GSM mode already
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TEST=`dbus-send --system --type=method_call --print-reply --dest=com.nokia.phone.net /com/nokia/phone/net Phone.Net.get_selected_radio_access_technology | g$
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if [ ! -z "$TEST" ]
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then
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echo "Phone is already in 2G mode, aborting."
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exit 1
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fi
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# If we're on charge, we don't need to save battery so don't downgrade.
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TEST=`grep 1 /tmp/oncharge`
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if [ ! -z "$TEST" ]
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then
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# it's a non-zero value so we're on charge, abort gracefully
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echo "Phone is on charge, no need to set 2G mode, aborting."
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exit 1
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fi
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# Test whether the phone is on a call, if it is don't mess with it
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TEST=`dbus-send --system --type=method_call --print-reply --dest=com.nokia.csd.Call /com/nokia/csd/call/1 com.nokia.csd.Call.Instance.GetStatus | grep "uint$
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#if phone is on call, grep filters out any call status but 0/idle, so we get a zero length output
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if [ -z "$TEST" ]
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then
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echo "Phone is making or receiving a call, aborting."
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exit 1
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fi
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## Adding a 30 cooling off period means that if the device gets unlocked again within 30 seconds, we can
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## kill this script whilst it's sleeping and leave 3G intact.
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echo "Scheduling switch to 2G in 30 seconds..."
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sleep 30
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# Make the actual change to 2G radio mode
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run-standalone.sh dbus-send --system --type=method_call --dest=com.nokia.phone.net /com/nokia/phone/net Phone.Net.set_selected_radio_access_technology byte:1
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echo "Phone set to 2G mode."
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exit 0
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</source>
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Revision as of 21:35, 19 July 2010

  • Maintain phone in GSM mode by default (when on battery)
    • Switch to 2G mode opportunistically when all seems to be quiet
      • trigger by phone locked, but test the following
        • are we on charge? don't bother switching
        • are we on a call? don't break my 3G link
        • is 3G still required? work out how to decide
          • are we using an application that should block the downgrade?
          • analyse IP traffic flows or bytecounters?
          • look for specific applications running
          • allow one or two minutes cooling off period
    • Switch to 3G when something requires it
      • don't change anything if we're on a voice call
      • don't bother if we're already on WiFi
Retrieved from "http://wiki.maemo.org/User:Magick777/Opportunistic_Power_Saving"