A while back, I picked up a Hanns-G HG281D 28″ LCD monitor. The monitor does not have the best black levels or viewing angle consistency, but the picture quality is not bad, and generally I would say that it offers a great value for the price. There was one annoyance though… when hooked to an NVidia 8800GT via a DVI to HDMI cable (the monitor only has HDMI and VGA inputs), the monitor would never enter sleep mode. It didn’t matter if my other monitors had turned off due to an idle timeout or if the computer was off, the HG281D would just stay on and display a cable disconnected message.
I did some research online and found the issue is related to a misinterpretation of the monitor’s capabilities as reported to the video card via EDID. To override the data as read via EDID and force the NVidia driver to use sleep mode on the display, it just takes a few quick entries to the Windows registry. Since these updates need to be made every time the video driver is updated (as I did to version 190.62 today, prompting this post), I put them in a .reg file for easy access.
Here’s how to fix this on your computer:
- Download the Hanns-G NVidia Sleep Mode Fix registry file I created (right click and Save Link As… or Save Target As…).
- Double click on the file to add the information to the registry.
- Restart, enjoy!
This should work on all versions of the HG281D and GeForce drivers for Windows Vista and Windows 7, but if it doesn’t, leave a comment and let me know.