screen: second monitor that shows a distorted image in native resolution using Ubuntu on laptops

I'm having problems with a second monitor on laptops that use Ubuntu or Ubuntu-based Distros:

If connected via HDMI (option only) with my Samsung 27 "monitor, it is shown as Samsung 7", the image is completely distorted and cut in half with the left and right side changed to the native resolution at 1920×1080 at 60Hz.

If it goes down, it works, but with little flicker and many bars display across the screen.

Used laptops:
– ASUS B43V Ubuntu and Mint (both newer) with the same problem.
– Chromebook HP 14 (old) with GalliumOS (Xubuntu)
with exactly identical results.

The monitor and the HDMI cable work well with Win7 and even with Linux Mint on my PC (where the screen is displayed correctly as 27 ")
At first I thought that this problem was due to the 2 video cards in the ASUS, but recently I got the Chromebook and, since I had exactly the same problem, I asked myself.
I have tried different forum solutions on the ASUS in the past (changing the resolution with the xrandr and bumblebee configurations), but I never found a solution that would work.

The B43V currently runs Win 7 because of the problems and I really can not use the Chromebook as planned.
Any help or suggestion would be useful.

PS: I remember playing with ASUS and Mint several years ago, it could have been Mint 13, with no problems with the screen. To play means to install, to repair problems that arise with the help of google and to despair over unsolvable problems, then to uninstall it … I am still quite new in Linux.

If you want to see the result of some commands, write them and I will publish the result (of the Chromebook).