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January 3rd, 2020 08:00
U3415W, DisplayPort stopped working overnight
I have two Dell U3415W monitors for my desktop PC. 48 hours ago the DisplayPort on my primary U3415W apparently failed. After several hours of troubleshooting, I switched to HDMI and gave up. Now, just this morning, the same issue has happened to my secondary U3415W.
The U3415W just read "entering power save mode"
Running Windows 10, my video card is Nvidia GeForce GTX 1070.
Other monitors work fine through the DisplayPort cable and out port on my video card.
I have tried unplugging all cables, restarting the PC and re-attaching them.
The U3415W menu is in-accessible via the DisplayPort input. I have attached my Nintendo switch to them to access the menu via HDMI input.
DELL-Chris M
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January 7th, 2020 14:00
We still have not received the U3415W service tag numbers via the DELL-Cares private messages?
No cables/hard reset both of the U3415W
* Turn both of the U3415W off
* Disconnect every cable (including the power cable) from the rear and side of the U3415W
* Press the power button in for 8 seconds (clears any residual power in the circuits)
* Reconnect only the power cable to the U3415W
Our Dell OEM GeForce GTX 1070 has three full size DP out ports, so that is what I guessing you have.
* Test both U3415W one at a time this way =
GeForce GTX 1070 DP out port #1 --> DP to DP cable --> U3415W DP in port
GeForce GTX 1070 DP out port #2 --> DP to DP cable --> U3415W DP in port
GeForce GTX 1070 DP out port #3 --> DP to DP cable --> U3415W DP in port
* Does the mDP in port work on both of the U3415W? Test both U3415W one at a time this way =
GeForce GTX 1070 DP out port #1 --> U3415W DP to mDP cable --> U3415W mDP in port
GeForce GTX 1070 DP out port #2 --> U3415W DP to mDP cable --> U3415W mDP in port
GeForce GTX 1070 DP out port #3 --> U3415W DP to mDP cable --> U3415W mDP in port
DELL-Chris M
Community Manager
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January 9th, 2020 05:00
Awaiting a response to my previous public troubleshooting reply and a private message with the service tag numbers.
DELL-Chris M
Community Manager
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232.1K Points
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January 9th, 2020 12:00
Since we have not received a reply from you, we are closing this case.