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Kal1005
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U2515H - "no signal coming from your computer"

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Just received my U2515H, hooked it up to my computer using the mDP to DP cable provided in the box and immediately got a black screen telling me that there was no signal coming from my computer. I manually selected the input as mDP, so that shouldn't be the issue.

I'm running an Asus Rampage V Extreme mobo so i have a dedicated graphics card: a NVIDIA GeForce 980ti with 2 DP, 2 HDMI, and 2 DVI inputs.

Any suggestions on what might be the cause? I have tried unplugging and restarting both my computer and the monitor with no luck. I have a second U2515H arriving tomorrow, so I'd hate to have the same issue twice.

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Moderator
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RE: U2515H - "no signal coming from your computer"

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* Turn the monitor off
* Disconnect all cables from the monitor including the power cable
* Press the monitor power button in for 30 seconds
* Reconnect all cables and retest. Make sure the cable ends are fully seated

Did you test both DP out ports on the GeForce 980 Ti into the monitor mDP in?

tanfera
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RE: U2515H - "no signal coming from your computer"

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This happened to me when I enabled DP 1.2 option in the menu.

If that is the case, you do not have a DP 1.2 compatible hardware and software/OS. (perhaps if you are using a linux machine)

When your monitor tells no signal... push a menu button for about 10 seconds. It will show you other input sources, keep pushing. Then it will bring a menu to disable DP 1.2. Disable it. Restart the computer.

Hope this helps

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Kal1005
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RE: U2515H - "no signal coming from your computer"

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* Turn the monitor off
* Disconnect all cables from the monitor including the power cable
* Press the monitor power button in for 30 seconds
* Reconnect all cables and retest. Make sure the cable ends are fully seated

Did you test both DP out ports on the GeForce 980 Ti into the monitor mDP in?

I have tried the method of powering down, disconnecting, then reconnecting cables. This may sound like a silly question, but how do you press the power button for 30 seconds on a U2515H that doesn't have physical buttons?

I have tested both my DP out ports on my graphics card.

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Kal1005
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RE: U2515H - "no signal coming from your computer"

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This happened to me when I enabled DP 1.2 option in the menu.

If that is the case, you do not have a DP 1.2 compatible hardware and software/OS. (perhaps if you are using a linux machine)

When your monitor tells no signal... push a menu button for about 10 seconds. It will show you other input sources, keep pushing. Then it will bring a menu to disable DP 1.2. Disable it. Restart the computer.

Hope this helps

Thank you for the quick response. I will attempt this method at my first opportunity and let you know how it goes (I'm running Windows 10 Pro BTW).

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Moderator
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RE: U2515H - "no signal coming from your computer"

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Good point, the manual does not make it clear that the button is not a physical button. Just pull the power cord and all other cables and wait 30 seconds.

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Kal1005
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RE: U2515H - "no signal coming from your computer"

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This happened to me when I enabled DP 1.2 option in the menu.

If that is the case, you do not have a DP 1.2 compatible hardware and software/OS. (perhaps if you are using a linux machine)

When your monitor tells no signal... push a menu button for about 10 seconds. It will show you other input sources, keep pushing. Then it will bring a menu to disable DP 1.2. Disable it. Restart the computer.

Hope this helps

Sorry to say, this method didn't work. Thanks for trying, though. 

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Kal1005
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RE: U2515H - "no signal coming from your computer"

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Good point, the manual does not make it clear that the button is not a physical button. Just pull the power cord and all other cables and wait 30 seconds.

Sorry, no joy. Still the same issue: the monitor insists that there is no signal coming from the computer and puts the monitor in power saving mode.

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Moderator
Moderator

RE: U2515H - "no signal coming from your computer"

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I think that your video card supports DP 1.2. The default out of box setting in the U2515H is DP1.1a or DP 1.2 Disabled. Did you enter the OSD (On Screen Display) -Display and change it to Enable? Read pages 25-27.

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Kal1005
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RE: U2515H - "no signal coming from your computer"

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I think that your video card supports DP 1.2. The default out of box setting in the U2515H is DP1.1a or DP 1.2 Disabled. Did you enter the OSD (On Screen Display) -Display and change it to Enable? Read pages 25-27.

Referencing p.32 ("Using the Front Panel Controls"), I do not have the option of selecting a Menu icon to get into enabling or disabling DP 1.2. (in fact, i have NONE of these icons on my screen). Pressing these buttons only brings me to the input selection where button #1 (from left to right)  = up arrow; button #2 = down arrow; button #3 = check mark; & button # 4 = red x so that I can select DP, mDP, HDMI (MHL)1, or HDMI (MHL) 2. 

Long-pressing (10+ seconds) button #4 locks and unlocks the monitor, but long-pressing button # 3 brings me to an option to enable or disable DP 1.2. I've tried both options and have had no luck. 

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