Difference between revisions of "Connecting fit-VGA to a computer other than fit-PC2"

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When connecting fit-VGA to a computer other than fit-PC2 you may experience a symptom as follows:
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When connecting fit-VGA to a computer '''other than fit-PC2''' you may experience a symptom as follows:
  
 
=== Symptom ===
 
=== Symptom ===
* Start-up and BIOS are displayed fine
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* Start-up and BIOS are displayed fine.
* As soon as operating-system is loaded the picture disappears and display may be suspended
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* As soon as operating-system is loaded the picture disappears and display may be suspended.
  
 
=== Reason ===
 
=== Reason ===
* fit-VGA delivers DDC signals between the computer and display as-is, without any translation
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* fit-VGA delivers DDC signals between the computer and display as-is, without any translation.
 
* The display reports to be analog, but the computer output is digital (HDMI or DVI).
 
* The display reports to be analog, but the computer output is digital (HDMI or DVI).
* The display driver refuses to work with an analog display on a digital output.
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* The display driver refuses to work with an analog display on a digital output, therefore it '''cuts-off signal'''.
  
 
=== Solution ===
 
=== Solution ===

Latest revision as of 08:39, 27 June 2010

When connecting fit-VGA to a computer other than fit-PC2 you may experience a symptom as follows:

Symptom

  • Start-up and BIOS are displayed fine.
  • As soon as operating-system is loaded the picture disappears and display may be suspended.

Reason

  • fit-VGA delivers DDC signals between the computer and display as-is, without any translation.
  • The display reports to be analog, but the computer output is digital (HDMI or DVI).
  • The display driver refuses to work with an analog display on a digital output, therefore it cuts-off signal.

Solution

Perform one of the following:

  • Disable DDC / EDID in BIOS (if supported).
  • Disable DDC / EDID in display driver (if supported).
  • Disable DDC / EDID in display (if supported).
  • Uninstall display driver in order to use default VESA drivers that do no query DDC.