My computer has DVI and HDMI video outputs while I have two DVI monitors and a cheap HDMI to DVI cable. Both monitors go fine into and out of standby using DVI-to-DVI connection. Both also display fine via the HDMI-to-DVI connection but won't go into standby like they do with the DVI-to-DVI connection when the computer sleeps or is shut down. Instead the display behaves like they are not connected and display the "No DVI-D cable" message.

Do I just have a cheap faulty HDMI-to-DVI cable or are the standby signaling technologies between the two different?

I've searched Google but didn't find any definitive answer.

  • Have you tried Googling 'monitor won't sleep HDMI-to-DVI cable'? I did and it looks like others have experienced similar issues and Google probably has the answer at its fingertips. – Twisty Impersonator Aug 7 '14 at 3:25
  • Yes, I did. Sorry for not mentioning this. Nothing I found gave an answer though. – Claus Aug 7 '14 at 16:21
  • BTW, the recursion caused a stack overflow. LOL – Claus Aug 7 '14 at 16:33

I guess it's cable dependent. I have purchased a different (and still cheap) HDMI-to-DVI cable that suspends and wakes the monitor fine.

It would still be nice to know what pin(s) / signals are used for the power save mode of the monitor.

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