Hi Guys,
I have exactly the same issue one my Linux Mint 18 ( KDE) 64bit machine.
Some further details about my graphic card:
Code:
inxi -G
Graphics: Card-1: Intel Sky Lake Integrated Graphics
Card-2: Advanced Micro Devices [AMD/ATI] Topaz XT [Radeon R7 M260/M265]
Display Server: X.Org 1.18.3 drivers: ati,intel,amdgpu (unloaded: fbdev,vesa,radeon)
Resolution: 1920x1080@60.02hz
GLX Renderer: Mesa DRI Intel HD Graphics 520 (Skylake GT2) GLX Version: 3.0 Mesa 11.2.0