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1.Adapter (or DVI cable) is of bad quality
2.As far as i know ,your supplied adapter can provide DVI single link connection
3.You need DVI dual link compatible adapter and cable for using QHD resolution (like 2560x1600)
Thanks for the tip. Got the cable (Display Port to DVI-D).Did not fix the problem.
I am upgrading to Windows 10 now - maybe that will.
... another thing.
Do you know if the wx 7100 display ports are DP++ (active display ports)?
WX 7100 has fully functional display ports.
You need DP to DVI adapter (or maybe cable) but it must be DUAL LINK DVI.
Show me your available resolutions list, device manager>monitors and Radeon settings>display