U2715H, black flashing, disable the CSM in the bios

* What operating system? Windows 10
* Which video card? Gainward GTX 1060 6 GB
* Video card driver version? Last Nvidia
* Which ports are available for the video card? Several
* Which video output from the video card port video on the port monitor do you use? DP > CDM
* What cable are you using to set the video card to the monitor? DP > CDM
* What Windows power plan? High Performance

* Press the Menu button of the monitor to open the OSD (On Screen Display). The bottom of the screen should display a resolution. What is not? 2560x1440p
* Has been the monitor purchased from Dell or a reseller? Amazon.de

You can see the issue here

www.YouTube.com/watch

Gainward Gtx 1060 6 GB, i5 3570 k OECD 4.2 GHz, 16 GB of DDR3 RAM, Z77 Pro4, XFX Core Edition 650W 80 +.
Monitors: Dell U2715H, Asus MX239

Since the upgrade from GTX 660 > 1060 sometimes my U2715H Dell (1440 p) don't seem to be getting through DisplayPort signal when connected to my new GTX 1060 and starts "flashing" black. During this time I don't see anything about, the menu of the monitor even because it is completely black. This does not always happen, during boot that can't not what I thought, but when Windows loading sometimes starts, it becomes completely back until I have swap around the cables and inputs. However my other monitor connected with HDMI seems not at all affected while the other is flashes, there no CDM or DP to test with that. So I have a flashing monitor and the other being completely affected by it.

This happens only with miniDisplayPort and DisplayPort so far, I've tried all 3 inputs on GPU and CDM and DP on monitor. This question was not present with my previous MSI GTX 660 Twin Frozr, he also only CDM. When you use HDMI it seems to be normal without blinking, but I need to test again because it does not always happen. Changing resolution does not help. Allows to close the monitor for a few minutes, but it can happen again. Tried to use DDU 3 times to fix without success so far. I guess it's the driver or the GPU, doubt it's the monitor because it worked fine on previous GPU. Any ideas?

Fixed it by disabling the CSM in the BIOS. Been very well for 5 days, he became black once today, but has resumed normal again.

Tags: Dell Peripherals

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