AnsweredAssumed Answered

CF791 Freesync black screen via DP

Question asked by vese on Sep 13, 2017
Latest reply on Mar 11, 2019 by theking2

Hi,

 

I received my new Samsung CF791 UW monitor this week but ran into some problems.

When using ultimate mode on freesync with the display connected via DP the screen goes black/display port loses signal with the DisplayPort icon at the top left corner of the monitor when I start some games, for example Hellblade: Senua's Sacrifice and PUBG (both Unreal 4 engine games) seem to do this everytime, while Witcher 3 works OK so far. Every now and then ALT-tabbing with the affected games I do get into the game and after that it seems to work until I restart the game/computer.

 

When I disable freesync or drop down to 2560x1080@100hz resolution it seems to work better and with limited testing there were no black screens.

 

When using HDMI cable the black screen/signal loss does not happen but freesync flickers at the lower end of the range.'

 

I've tested this issue with following drivers and it is present in all:

 

17.8.1

17.8.2

17.9.1

 

I am using the cable and power adapter that came with the monitor.

Computer Specs:

  • GPU: RX Vega 64
  • CPU+Mem: Ryzen 1700 + G.skill Flare X 3200mhz DDR4
  • MoBo: Asus Prime X370-Pro
  • PSU: Corsair RM750i

 

Could this be an issue with the VEGA 64 GPU or the recent drivers that reportedly fixed the freesync flicker for this monitor?

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