0 Replies Latest reply on Apr 9, 2017 5:23 AM by mike79

    R9 390X displayport flickering on 4k screen win10


      in the last 4 updates on Grimson relive/vulkan, i have encountered some annoying behavior when , using display port and using 4k screen.
      all the time when using browser or software, it somehow restart connection to display port.
      I reinstalled several times but no luck.

      Now i narrowed it down to that it somehow connected to the scaling option in win10 where you can scale desktop upto 350 %

      when using no scale 100% there is no flicker or restart of the connection, but on every other scale options there is when hell begins.
      here you see how it restarts or looses the connection
      visual studio 2015 displayport bug - YouTube


      starts at 0:30
      it does that with all programs and browsers.


      little update
      it only does it also after some test with display port 1,2
      it do not do it with display port 1,1, but you cant get full UHD 4k with driver 1,1












      Monitor Samsung 4k

        Name U28E570 on AMD Radeon R9 390 Series

        Current Resolution 1920x1080 pixels

        Work Resolution 1920x1040 pixels

        State Enabled, Primary, Unsafe

        Monitor Width 3840

        Monitor Height 2160

        Monitor BPP 32 bits per pixel

        Monitor Frequency 60 Hz

        Device \\.\DISPLAY1\Monitor0



      Graphics Chipset

      XFX gpu card R9 390 x

      ATI AMD Radeon (TM) R9 390 Series

        Manufacturer ATI

        Model AMD Radeon R9 390 Series

        Device ID 1002-67B0

        Revision 81

        Subvendor XFX Pine Group (1682)

        Current Performance Level Level 0

        Current GPU Clock 300 MHz

        Current Memory Clock 150 MHz

        Current Shader Clock 150 MHz

        Technology 28 nm

        GPU Clock 1050,0 MHz

        Temperature 38 °C

        Bios Core Clock 300,00

        Bios Mem Clock 150,00

        Driver version 21.19.525.258

        BIOS Version 113-GRENADA_XT_C671_D5_8GB_HY_W83

        Memory Type GDDR5

        Memory 8192 MB

        Bandwidth 384,0 GB/s



      Can the devs look into this matter, and is there any temporary fix.


      Meldingen ble redigert av: mike h added Update on display driver.