4

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 ?

cl-netbox
  • 30,845
  • 7
  • 93
  • 131
hg8
  • 13,410
  • 12
  • 71
  • 103
  • 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 04 '15 at 10:29
  • No no the touchscreen disabling works fine. There is [multiple methods](http://askubuntu.com/questions/198572/how-do-i-disable-the-touchscreen-drivers) 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 04 '15 at 11:50

2 Answers2

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.

Rmano
  • 31,627
  • 16
  • 118
  • 187
1

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

Sorry to be the harbinger of bad news. ;)

A.B.
  • 89,123
  • 21
  • 245
  • 323