1

I have a slightly older HP ProBook Laptop with integrated Intel graphics running Ubuntu 18.04 on kernel 4.19.0 and the external screen (DisplayPort connection) gets tearing and then goes dark for a second and then comes back. It keeps doing this over and over again and it's impossible to do any work on it. Things that stop this from happening:

  • Lowering the resolution from 1920x1080 to 1600x900
  • Switching to console mode

This issue does not affect the integrated display.

Things that I have tried that have not had any effect:

  • Increasing the amount of video memory in the BIOS
  • Setting vm.swappiness=15 in /etc/sysctl.conf (from default of 60)
  • Installing and upgrading xserver-xorg-video-intel package
  • Trying different environments (same problem with Unity, Wayland, Gnome, etc.)
  • Plugging the monitor directly into the laptop or via docking station
  • Swapping out monitors entirely
  • Adding "TearFree" "true" to the /etc/X11/xorg.conf file
  • Upgrading kernel to 4.19.60

Any ideas would be greatly appreciated.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.