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hg8
Asked: 2015-09-04 23:33:50 +0800 CST

Does disabling touchscreen have any impact on battery life?

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I hesitate about keeping my touchscreen disabled on my Ubuntu installation.

I disabled it by adding Option "Ignore" "on" to the
/usr/share/X11/xorg.conf.d/10-evdev.conf file :

Section "InputClass"
        Identifier "evdev touchscreen catchall"
        MatchIsTouchscreen "on"
        MatchDevicePath "/dev/input/event*"
        Driver "evdev"
    Option "Ignore" "on"
EndSection

Does disabling (or ignoring) the touchscreen extend battery life or does it have any impact ?

power-management

2 Answers

  1. Best Answer

    One possible solution is to check it. Install powertop:

    sudo apt-get install powertop

    and run it (I use an averaging time of 30s, use one that gives more or less constant values when the system is idle):

    sudo powertop --time 30

    powertop output

    The power consumption is shown there --- try it with and without touchscreen and compare results. Although I suspect that @A.B. is right --- it will be mostly negligible.

    • 3

  2. Technically, yes. But you will not notice the difference.

    Sorry to be the harbinger of bad news. ;)

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