Solved Second monitor going into power saving mode

February 7, 2013 at 21:23:01
Specs: Windows 7

I have dual monitors and the second screen turns black and says D-Sub power saving mode. I have turned off all power saving modes on the screens and sleep timers on the computer. I have also tried other screens. i have recently upgraded from 400W to 600W pc power supply and am still having the same problem. Can anyone help me out. 4 month old computer really frustrating!!!

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February 8, 2013 at 00:16:44
✔ Best Answer

Try a different signal cable to the affected monitor, and ensure monitor driver (just an information or INF file) from monitor maker is installed.

When the monitor driver is installed, monitor make & model appears in Device Manager. If it says "Generic" monitor, the driver hasn't been installed.

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February 8, 2013 at 13:30:12

Look under advanced power settings. I see a PCI express listing. Check that out.

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February 8, 2013 at 13:32:33

Thanks heaps phill22 worked a treat so far. Thought i had already installed the driver for that monitor but never did by the looks of it i feel stupid but thanks heaps guys =D

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February 8, 2013 at 13:40:08

Nope had no luck guys it just dipped into power saving mode again. I have no idea what else it could be. Only other thing i could say is there an NVIDIA setting that i have to change to be able to have dual monitors?

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February 8, 2013 at 13:55:21

I assumed you were already using the nividia settings. Did you look at the setting I mentioned above? Go to Control panel> power options> change to> My custom plan> change plan settings> set the turn off display to desired time> Set sleep to NEVER> Click on> change advanced power settings> expand PCI express> Link state power management> OFF.

Not sure if that setting refers to multiple graphics cards or not but worth a try.


I have a Samsung monitor that has a driver installed but it shows as generic PnP display in Windows 7. Didn't do that in XP.

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February 8, 2013 at 14:31:29

The PCI express was set to maximum power savings reckon that would be the solution? and my main screen was shoing generic until i installed now shows digital screen

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February 8, 2013 at 14:39:59

I havent done anything to my NVIDIA settings. I go into nvidia control panel and it brings up dual monitors on there so it is detecting them and i did the PCI express thing but it still does the same thing.

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February 8, 2013 at 15:22:54

You don't want maximum savings. Just the opposite.

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February 8, 2013 at 15:25:19

Yeah i had it turned off then by accident switched back to balanced and didnt change the setting in that so looks like it is all solved thanks heaps =D

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February 9, 2013 at 16:15:22

Still does the same thing. Not as much as it did before but still occasonally dips into power saving mode =(

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February 9, 2013 at 16:58:36

Then you don't have the power saving features all turned off.

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February 9, 2013 at 19:02:29

I have looked at all of them in the advanced power settings and everything is turned off. So i have no clue

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February 10, 2013 at 08:35:46

Are you using the monitors in clone mode or independent mode?

Are the monitors identical? Are you running off integrated graphics?

Provide details of you hardware.

See if the link below is of any help to you.

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February 11, 2013 at 02:05:30

Where can i find out about the clone more or independant mode?

I dont know what you mean by identical or intergrated graphics sorry.

That link is what i am thinking that is the problem that i havent set it up through NVIDIA settings but is for XP i am running windows 7. Have had a look online for the same with windows 7 but cannot find it.

My last resort was to call up and speak to NVIDIA and ask them if there would be a problem with the graphics card.

My specs are as follows:

Windows 7 Home Premium
Processor: AMD FX(tm)-8120 Eight-Core Processor
16.0GB ram
64-bit operating system

Device management details are:

Computer-ACPI x64-based PC
Display adapters-NVIDIA GeForce GTX 550 Ti
Monitors-LG E2242(Analog) LG E2351(Digital)

Is there any other specs you need?

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February 11, 2013 at 04:18:09

Do you have more than one GTX 550 Ti?

Your monitors are not identical according to your model numbers.

Your graphics adapter is NOT integrated but an add in card.

Clone means both monitors show the same identical image.

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February 11, 2013 at 13:12:23

I have just the one graphics card that i know of. and on the mulitple displays setting in screen resolution is says extend these displays.

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February 11, 2013 at 13:27:57

Maybe this latest app will correct your problems. Click on the link below.


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