OS: Ubuntu LTS 16.04
PC: FullHD monitor, Intel HD Graphics 530, no external videocard
In landscape orientation all is good.
In portrait orientation I have screen tearing problem, like this: https://en.wikipedia.org/wiki/Screen_tearing
When I move some small window across the screen, screen image tears in random horizonal lines.
I tried this (as someone suggested in similar questions):
sudo apt-get purge xserver-xorg-video-intel
After reboot problem changes: now when I move small window across the screen, I clearly see tearing in only one same vertical (!) line at the right (at around 800px of 1080px screen width, didn't meaasure correctly). So I reverted this and installed xserver-xorg-video-intel again.
Also tried this solution:
Screen tearing in Ubuntu with Nvidia/Intel graphics
But after creating /etc/X11/xorg.conf.d/20-intel.conf sytem won't boot.