LG Display won't stay in power save mode

[Dan Hildebrand]

Hey guys!

I just built my new machine:
Asus x99-a motherboard
Intel Core i7 5820k
32 gb DDR 4 ram
512 GB SSD
EVGA GTX 970 FTW
Windows 7 Ultimate

My monitor is the LG34UM95 21:9 ultrawide, connected using displayport.

My question is related to the monitor going to sleep/shutting off, as per the system settings to "turn off display after x minutes".

When my display goes to sleep, it shows a gray screen with a message saying "no signal detected, entering power save mode". which is great. Then the display shuts off.. for a few seconds, until it turns back on and shows the same gray screen with the same message.

This repeats endlessly (or until the computer goes to sleep). Additionally, while this is occurring, I can hear the "plugged in, unplugged" sound that Windows makes when you plug or unplug a device.

I'm not entirely sure if this is an issue relating to the monitor, the graphics card, or system settings, so I was hoping that maybe someone else here has some experience with this problem.

Any thoughts?

Many thanks,
Dan

 

[Dan Hildebrand]

bump

 

[Saga Lout]

We don't ike Bump here in Tom's Dan - think of something more creative like "I just remembered ....

If someone has an answer, rthey will come along sooner or later. Does your monitor have an independent menu of its own?

 

[Dan Hildebrand]

My apologies

The monitor does have it's own menu, but it's somewhat limited. Power save is set to on, display port is set to on (though this didn't make a difference), but none of the other options i noticed would affect the power save mode. Unfortunately I don't have another display to test it on. So im left guessing if it's the monitor or the system itself. The plug-unplug sound keeps going off once the monitor goes into power save mode, and then cycles through again. Keeping in mind that the screen never actually "wakes up" unless I move the mouse or hit a key on the keyboard.

 

[Saga Lout]

Maybe turning off the screen's own power saver will allow Windows to overarch it.

 

[imauserguynamedude]

I'm having the exact same problem! Did you ever find a solution? I have a completely different setup. I have a laptop: MSI GS60 Ghost Pro 4K-053 running windows 10. It's connected via DisplayPort to 24" Dell P2415Q.

 

[shovelhead84]

I just purchased a similar model monitor last week. I got the slightly smaller LG29UM68. We got a Surface Pro 4 for my wife and this LG monitor is being used as the external display for the Surface dock. I am using display port as well.

Symptoms: When the PC goes idle, the monitor cuts to the grey screen "No signal detected. Will enter power save mode shortly". The monitor then goes black (I suspect for power save). It then flashes and goes back to the grey screen "No signal detected. Will enter power save mode shortly". Cycle continues endlessly.

In my case I had the monitor "buzzer" option turned on, so every time it did this cycle it would generate a loud "DINGGGG". I turned off the buzzer so I don't hear any noise. The surface is not making the connect/disconnect sound. It could be that I have audio going through the monitor and it should be in power save. I have changed the power save settings on the monitor and even tried turning them off. Doesn't seem to matter.

This is very frustrating as I have wasted a lot of time searching for answers. I may have to do some additional testing or call support.