I suffer with this on bootup, the screen is fine, but shows "snow" and/or blanks out every few seconds on the Uefi boot image, but once in windows, the driver sorts it out and ups the refresh rate to the appropriate value (usually.sometimes, the displayport is stuck 56Hz, and I have to unplug my monitor, then plug it back in and the video card will redetect it and apply the appropriate refresh rate. apparently there is a driver/hardware issue that reverts to the lowest refresh setting possible over displayport (doesn't happen with HDMI or DVI) when booting/rebooting and drops the refresh rate lower than what is supported, causing the blanking out/black screens. My monitor is set to run 60hz, and normally it does, but, when the black screen/blank screen issues appear, a quick check of the monitors running frequencies in the monitors menu itself showed the signal coming is was only 56hz. If your monitor can display the resolution and refresh rate it's running onscreen, check to make sure the card itself is actually running at the res and refresh rate it's set to run at when the display issue occurs. After hunting down the issue, I found what it causing it (as far as my issue, may work for others as well.) Happens to me as well on my 4k monitor over displayport. Prices include shipping, taxes, rebates, and discounts TP-Link TL-WDN4800 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter Toshiba Product Series:DT01ACA 1TB 3.5" 7200RPM Internal Hard DriveĮVGA 700W 80+ Bronze Certified ATX Power Supply G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 MemoryĬrucial BX200 240GB 2.5" Solid State Drive Gigabyte GA-970A-DS3P ATX AM3+ Motherboard PCPartPicker part list / Price breakdown by merchant Type Not sure if this helps, but I wanted to say it.Įdit: using the latest AMD drivers, full PC specs list below It normally stays at the default clock speed of 1040 mhz, but occasionally I bump it up to 1060 mhz, using MSI's 1 click overclock. I have an MSI Gaming R9 R90 with 8gb vram. I'm starting to think that maybe the card has a faulty display port, and as I purchased this card a month ago, am thinking about RMA'ing it, however, I wanted to tell you guys my issue here, before I do that, in case it can be fixed. At first I thought it was a bad adapter, so I bought a different one, from a different manufacturer, still, the same thing occurred. The monitor is connected by VGA to a VGA-Display port active adapter, which then connects to the card's display port. I have tried switching the monitor, still occurred. (Going fully black, staying that way for 0.5 seconds, then coming back). However, a few days after setting up eyefinity, I noticed that the middle monitor was flickering a lot. Hey, so I currently have an R9 390, and am trying to run 3 monitors (Dell E207WFP, 1680x1050) in AMD Eyefinity.
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