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April 30th, 2018 11:00

S2716DG, A07, DP will not wake with two inputs

I have an issue after following some of the advice on these forums with my dell monitor not waking on an input change from HDMI to DisplayPort. I have factory reset the monitor and disabled monitor deep sleep to no avail.

For my setup I have two computers and two monitors (one being the Dell). Computer 1 is connected to both the Dell S2716DG and my secondary monitor via HDMI. Computer 2 is connected to the Dell via DisplayPort and the secondary via DVI. There is a USB KVM switch between the two computers for my mouse and keyboard.

Switching from DisplayPort to HDMI will always work with the Dell. However, switching back from HDMI to DisplayPort will not work. The screen simply flashes the HDMI screen for one second and then goes to the DisplayPort black screen and eventually power saving mode. I've noticed that this only happens after being on the HDMI input for a long period of time. The secondary monitor (HDMI to DVI) has no problem when doing this.

The only solution I have found is to physically disconnect and reconnect the DisplayPort cable from the computer to reset the handshake. Any help would be greatly appreciated!

* What is the 20 digit alpha-numeric monitor serial number and A0x revision? CN-0JCVN0-QDC00-7BD-14CU A07
* To what computer model is the monitor attached? Windows 10 PC
* What video card/GPU is in the computer? NVIDIA 1070
* What video out ports are on the video card/GPU or computer? DisplayPort, DVI, HDMI
* List all monitor cabling attached to the computer and the ports they are using: DisplayPort from PC to Dell monitor. DVI from PC to second monitor.
* What Windows power plan? High performance. PCI link state off. 
* Resolution: 2560x1440, 144Hz, G-SYNC
* Was the monitor purchased directly from Dell or some reseller? BestBuy

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