touch screen thinks other displays are part of touch space
Bug #1777182 reported by
Vernon Cole
This bug affects 2 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu MATE |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
Running Ubuntu Mate 18.04 on a Dell laptop with a built-in touch screen display, and a second monitor (not touch) on the display port output. The extended monitor is left of the laptop in this case.
When I touch the left edge of the laptop display, the mouse pointer appears on the extended monitor, not under my finger on the laptop. The "X" value of the mouse seems to be calculated for the entire array of monitors, not the monitor which is actually touch sensitive.
This makes the touch input basically unusable when a second display is in use.
I was able to solve this by installing `xinput-calibrator` and then running it (called Calibrate Touchscreen from the menu, or xinput_calibrator from the terminal).
You can also try `x11-touchscree n-calibrator` . I think either should work (try both, since it might be hardware-dependent - what laptop do you have?)