LES v3 with three displays under Windows and Ubuntu

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Systems with Intel HD graphics (like the LES v3) support up to three displays. Which systems actually support three displays at the same time depends on the graphics controller used. In this article you will learn how to run a Thomas-Krenn LES v3 with three displays under Windows and Ubuntu.

Intel HD graphics chips with support for 3 displays

The Intel HD graphics chip used in the specific computer must support three displays at the same time. For more information, see the wiki article Intel HD Graphics with three Displays.

Konfiguration of LES v3

The LES v3 is suitable for operation with three monitors in the following configuration. With deviating cabling, for example with a direct cabling of the display port connection, operation with three monitors could not be tested successfully.

For a higher graphics performance and less jerky operation (moving windows) the increase of the reserved RAM for the graphics chip has been proven especially under Ubuntu 17.10. In the BIOS menu, switch to the Chipset tab and then to the North Bridge menu.

Now change the following parameters:

  • Increase the value of DVMT Pre-Allocated to the maximum, in case of LES v3 the highest setting 512M is available.
  • For DVMT Total Gfx Mem, set the value to Max.
  • The Aperture Size is set to 512MB.

Save and exit the BIOS configuration and then start the system.

Supported configurations for 3 displays on LES v3

In addition to a display port connection, the LES v3 has two HDMI connections. In order to be able to operate three monitors under Windows 7 or Ubuntu 17.10 the following configuration has been proven:

  • Displayport connection: via "Displayport -> VGA" adapter (with a direct connection of a displayport cable without adapter three displays do not work)
  • HDMI 1: Direct cabling via HDMI or via adapter to DVI
  • HDMI 2: Direct cabling via HDMI or via adapter to DVI

Driver version used

At the time of the test, the current version 15.40.37.37.4835 was used under Windows 7, which contains the graphics driver in version 20.19.15.4835.[1]

Screenshots of the monitor configurations

The following section shows the configurations of the monitors under Windows 7 and Ubuntu 17.10.

Windows 7

The following screenshots show the monitor configuration and driver details for Windows 7.

Ubuntu 17.10

In the menu System Settings the configuration menu Displays can be found in the section Hardware.

References

  1. Intel® Graphics Driver for Windows* (15.40) (downloadcenter.intel.com)

Author: Thomas Niedermeier

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