Hi,
I'm unsure whether this is of any help but when I press a single point anywhere 
in the screen (and then release your finger) the mouse position jumps to the 
bottom left of the screen. I assume this is X 0 Y 0?
What commands would I run from the terminal to get a live readout of the 
co-ordinates that the monitor is sending as X Y co-ordinates?
When pressing with 1 finger and then another the pointer moves from the bottom 
right 0,0 to where the 2nd finger lands.
The only output I got that seemed different to others I see posted is the 
xinput list --long
LG Display LGD-MultiTouch                       id=10   [slave  pointer  (2)]
        Reporting 6 classes:
                Class originated from: 10
                Buttons supported: 5
                Button labels: Button Unknown Button Unknown Button Unknown 
Button Wheel Up Button Wheel Down
                Button state:
                Class originated from: 10
                Detail for Valuator 0:
                  Label: Abs X
                  Range: 0.000000 - 1920.000000
                  Resolution: 10000 units/m
                  Mode: absolute
                  Current value: 960.000000
                Class originated from: 10
                Detail for Valuator 1:
                  Label: Abs Y
                  Range: 0.000000 - 1080.000000
                  Resolution: 10000 units/m
                  Mode: absolute
                  Current value: 540.000000
                Class originated from: 10
                Multitouch capable (max 18 touches):
                  Mode: Direct Touch
                Class originated from: 10
                Detail for Touch Valuator 0:
                  Label: Abs MT Position X
                  Range: 0.000000 - 1920.000000
                  Resolution: 0 units/m
                Class originated from: 10
                Detail for Touch Valuator 1:
                  Label: Abs MT Position Y
                  Range: 0.000000 - 1080.000000
                  Resolution: 0 units/m

Is there anything else I can do to help?
Thanks

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https://bugs.launchpad.net/bugs/791833

Title:
  Dell ST2220T Monitor responds to touch only on warm boot from windows

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