2 Replies Latest reply on Sep 21, 2016 1:02 AM by dragonrjg

    R9 390 dual monitors won't work




      My current system specs are:


      • SO: Win 10
      • CPU: i7-6700
      • RAM: 16gb ddr4 2133mhz
      • MB: MSI Z170-a pro
      • PSU: Corsair TX750w
      • and obviously GPU: XFX R9 390 DD


      The GPU works well enough with one monitor, but a few minutes(3 ~5 min) after I connect 2 monitors and start playing a game or something, they start losing signal and turning off intermittently until I disconnect one of them from the DVI-D port. (Doesn't matter which one)


      More info that might be relevant:

      I've used this two monitors on my old system with an ASUS R9 290, they work fine.

      Both monitors are exactly the same. They have 1080p and about 60mhz

      They are both VGA monitors and I'm using this active adapter VGA to DVI-D to connect them to the GPU.

      When connected alone, both monitors/converters/cables work fine.

      I have installed the 16.11 windows hotfix drivers.


      I've scoured the internet for the last 5 days(I've built the system Friday night) and can't find my exact situation. Today I found something about a memory jump to 1500 when connected to 2 monitors, but I wasn't able to test if that's the case yet.


      If that's my case what would be my correct course of action? Drives? RMA the GPU? Is there something I could test or do to try to solve this? Is this a known issue?


      I've been an AMD user for various reasons for almost 18 years this is the first real problem I have with a GPU.



        • Re: R9 390 dual monitors won't work

          So if anyone ever stumble upon this problem (I doubt it), here's what solved it for me. Ditch the 2 VGA monitors with 2 Active converters. The GPU simply can't handle them. Don't know if its the need to power the active converters, or something else, it just won't happen.


          I tried a friend's HDMI and DVI-D monitors and everything worked fine the whole time, running huge stress tests on the GPU.

          • Re: R9 390 dual monitors won't work

            Same problem but running with a radeon r9 295 (200 series) GPU.  But both of mine work for about 5 minuets the primary (1) shuts down and secondary becomes the only monitor I have.

            Any one else on possible corrective actions for this problem.  ! is a HDMI connection to Sony HDTV and the other is a DVI to a Acer 21" monitor.  Monitor as secondary turns to first and only monitor.