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Windows 7: HDMI Power saving mode

01 Apr 2011   #1

Windows 7 Home Premium
HDMI Power saving mode

Hello everyone!

So, since about a week my LG monitor has went into Power Saving Mode during video games. I'm not sure if it's only during video games because it might be coincidental. But Yeah, it goes into power saving mode and of course I can't reopen it. My PC is running but my Monitor isn't.

Sometimes it happens during very small intervals or sometimes it happens on long intervals. I am right now trying to install the Windows Update: ''nVidia - Display, Other hardware - nVidia GeForce GT 220'', but I don't know if it's going to help me or not.

I have Windows 7 Home Premium, a pretty good graphics card, a lot of disc space, 9GB of Ram.

Does anyone knows what I must do to fix this problem?

If you need more information, just specify what is the info you need and I will immediately give it to you.

My System SpecsSystem Spec
04 Jan 2012   #2

Monitor going into Power Savings mode - What worked for me

Hope this helps someone. I had a problem with one of my monitors going into Power Savings mode. Tried the usual power on/power off, reload drivers, swapped cables, turn of PCI Express Power savings mode, checked monitors for Power Savings feature, still no go. Found this posting on Microsoft Social Technet site;

Disable 'Monitor Off' detection, how?

A two year long thread describing this problem from a variety of users who have experienced this dreaded feature of Windows 7. I run the same monitors with DVI cables directly plugged into another box with Ubuntu, never had this problem. So the issue is definitely not the monitors. BTW, I am running Windows 7, x64, Pro, SP1, with Nvidea GT 220 graphics card. 2 Monitors plugged into Windows PC, 1 with VGA cable directly, 1 with VGA cable going into the VGA to DVI connector. The 1 going into the VGA to DVI connector seemed to be the problem for me, but as per the Microsoft link, other people had this problem with different setups, like DVI or HDMI cables. I did not create the solution, just want to pass along the info that worked for me.

I recommend you get an adapter for your cable of choice, then remove the PIN that is related to the Hot Plug Detected/Auto Detect/PNP functionality for the monitor.

In my case, one of my VGA monitor's was connected to a VGA to DVI connector going into my graphics card. I simply pulled PIN 12 from the VGA cable going into the VGA to DVI converter, problem solved. Monitor does not go into Power Savings mode, shown as Generic Non-PNP monitor in Device Manager. The signal for Auto Detect/PNP is not transmitted through to the VGA to DVI converter and the problem is gone!!!

I have included 3 links below, 1 for each cable type that people may come across. Per the Microsoft posting, some people found it useful to disable PIN 12 for VGA monitor cables, some found it useful to disable PIN 16 for DVI cables and some found it useful to disable PIN 19 on your HDMI cable. All this should preferably done on a connector cable which would be cheaper than ruining your only cable, and as someone had suggested, you could tape over the PIN 19 connection on your HDMI cable to solve the issue.

3 Links for DVI/HDMI/VGA Cable Auto Detect/PNP Pin Location

DVI Cable

Image Showing PIN 16 location on DVI Cable - Disable PIN 16 to remove Auto Detect/PNP

HDMI Cable

Image Showing PIN 19 location on HDMI Cable - Disable PIN 19 to remove Auto Detect/PNP

View image: HDMI Blocked Pin 19

VGA Cable

Image Showing PIN 12 location on VGA Cable Disable PIN 12 to remove Auto Detect/PNP

This worked for me, I hope it will help to save someone the time and headache that it provided me with.

Spend some time helping someone out,

My System SpecsSystem Spec

 HDMI Power saving mode

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