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Using Monitor Asset Manager Version 2.6 to Read Extended Display Identification Data (EDID) Information

Summary: Extended Display Identification Data (EDID) information allows a digital or analog display to describe its capabilities to a computer or video source.

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Symptoms

EDID information is typically stored in a monitor’s Electrically Erasable Programmable Read-Only Memory (EEPROM).  It allows a computer to determine what kind of monitors are connected so the video image can be displayed properly.

 

Monitor Asset Manager version 2.6 (http://www.entechtaiwan.com/util/moninfo.shtm ) is a monitor information utility that queries the monitor directly, and is a useful tool for troubleshooting potential EDID and video card incompatibilities.  See the example below for the process of using Monitor Asset Manager version 2.6 to view EDID information. 

Cause

 

Resolution

NOTE: Dell does not support the use of third party utilities. The information in this article can be used at your own discretion. This is not an endorsement of this product and there are other utilities that will read EDID information.

 

1.       Download Monitor Asset Manager version 2.6 (moninfo.exe).

a.       http://www.entechtaiwan.com/util/moninfo.shtm

2.       Run moninfo.exe on your system.

a.       Click on the checkbox for "I agree with the above terms and conditions" to accept the MonInfo License Agreement and then click the "Next >" button.

b.      Accept the default Destination Directory of "C:\Program Files\MonInfo" and click the "Start" button.

c.       Decide if you wish for MonInfo to allow the following by checking or unchecking the appropriate box and then click on the "OK" button.  For this example, I left the default option with all boxes checked.

                                                               i.      "Create a program group in the Start menu."

                                                             ii.      "Place a shortcut to MonInfo on the desktop."

                                                            iii.      "Run MonInfo when Setup finishes."

3.       You will receive an output with the following information regarding each display connected to your system (see example screenshot below).

a.       Display IDs.

b.      Monitor information which includes model name, manufacturer, serial number and EDID revision.

c.       Color characteristics.

d.      Timing characteristics which includes native/preferred timing.

e.      Standard timings supported.

f.        Report information.

g.       Raw data.

 

 

Monitor Asset Manager

 

 

 

Additional Informatio

Microsoft has a white paper for Windows Vista, Windows 7 and Windows Server 2008 which describes a process for monitor manufacturers to avoid reflashing a monitor’s EEPROM by creating a monitor INF file that can override the EDID information (http://msdn.microsoft.com/en-us/windows/hardware/gg487330.aspx ).  A process like this is not recommended for a typical user, but reserved for highly advanced users and monitor manufacturers.

 

Intel also has an article for highly advanced users that describes the process to modify the INF file (http://software.intel.com/en-us/articles/custom-resolutions-on-intel-graphics/ ) to override EDID information.