Comment 2 for bug 1777182

Confirm the same behaviour on my laptop. I can provide video later if it is necessary.

Resolution of main display is 1366x768
Second monitor stands on the right of laptop, its resolution is 1600x900.
Touchscreen work not for one display, but for the whole desktop. I mean:
1) when I move cursor by finger from left side of main screen to its right side -- cursor moves from left side of main screen to right side of second screen (from 0 to 1366+1600=2966)
2) when I move it from up to down it moves from 0 to 900, not to 768.

`x11-touchscreen-calibrator` works. I installed it (via apt install) and started once from terminal. Touchscreen was fixed immidiately. Output:

$ x11-touchscreen-calibrator
Touchscreen: 'ELAN Touchscreen'
screen: 2966x900, display: 1366x768 (0,43), preferred: 1366x768 (eDP-1), scaling mode: 'Full aspect' RR_Rotate_0
0.460553 0.000000 0.000000
0.000000 0.853333 0.047778
0.000000 0.000000 1.000000

But now I still don't know if I need to make calibrator run on every startup or not.

---

Laptop: Acer Aspire V5-572PG
MATE version: 1.24.0

$ lsb_release -a
LSB Version: core-11.1.0ubuntu2-noarch:printing-11.1.0ubuntu2-noarch:security-11.1.0ubuntu2-noarch
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal

$ uname -a
Linux Axenov 5.4.0-45-generic #49-Ubuntu SMP Wed Aug 26 13:38:52 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux