Microtouch Serial Touchscreen Working with Ubuntu 11.10 (Oneiric Ocelot)

Touchscreen with Ubuntu & Gnome 3

Finally got the touchscreen working on the laptop. It worked fine on the desktop, though I think the pcmcia card I’m using in the laptop was giving me problems.

Not sure what got it working in the end (couldn’t get an xorg.conf file to work at all… kept crashing on boot) but among the things I did that may have got it working was install the default microtouch drivers :

sudo apt-get install xserver-xorg-input-mutouch (turns out this is not necessary.)

and set the serial port as the input with

sudo inputattach -mtouch /dev/ttyS4

ttyS4 will vary depending on your port.  I found mine by unplugging the pcmcia card then replugging it and entering dmesg in the terminal which showed the port number it was assigned among other things.

Didn’t work the first few times, then it just suddenly started working, so not sure if I did something different :/

Anyway, here is Ubuntu 11.10 running Gnome 3 (I love Gnome 3 so much… I want its babies) with a working 15″ touchscreen.

UPDATE :  Once I restarted the computer I found the touchscreen didn’t work automatically though when I entered

sudo inputattach -mtouch /dev/ttyS4

into the terminal it started up again.

It needs to start automatically since I won’t have a keyboard on this computer.

To get it working automatically the following should work.

You need to edit the rc.local file by entering this into the terminal :

gksudo gedit /etc/rc.local

and then add the following lines at the bottom :

inputattach -mtouch /dev/ttyS4 &

above exit 0 and save it.

Then in theory it should start automatically next time you reboot. Mine is a bit funny. For some reason it will only start if I am touching the screen during boot. Basically from the grub screen onwards I have to touch the screen or my pcmcia serial card won’t start… which is annoying, but put-up-with-able.



  1. Since it’s all made out of wood, how did you install the groundings?

    • Needs More Steam says:

      I attached the ground cable to the ground on the laptop’s motherboard. No sure how effective that will be against damage, but it works. I see you are in the touchscreen business. What do you think?

  2. As long as attached all the groundings as they where in the original housing, that would be fine.

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