3

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 ?

  • This is confused --- you have two questions here. The failing of disabling the touchscreen and the power one related to the title. Please split them into two... – Rmano Sep 4 '15 at 10:29
  • No no the touchscreen disabling works fine. There is multiple methods to disable touchscreen. It have put it here just for information on the method I used. I have edited my question for clarity. – hg8 Sep 4 '15 at 11:50
3

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.

1

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

Sorry to be the harbinger of bad news. ;)

  • Haha not worries I was expecting this answer thanks! Why "Technically yes" ? – hg8 Sep 8 '15 at 16:31
  • @hg8 It is consumed slightly less power, technically speaking. =) – A.B. Sep 8 '15 at 16:49

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