Section "Device" Identifier "radeon" Driver "radeon" BusID "PCI:1:0:0" Option "DRI" "3" //Should be noted that both DRI3 and 2 have the same issue EndSection Section "Monitor" Identifier "DisplayPort-0" Option "Primary" "true" EndSection Section "Screen" Identifier "Screen0" Device "radeon" Monitor "DisplayPort-0" DefaultDepth 24 SubSection "Display" Depth 24 Modes "3840x2160" EndSubSection EndSection Section "Monitor" Identifier "DVI-0" Option "LeftOf" "DisplayPort-0" EndSection Section "Screen" Identifier "Screen1" Device "radeon" Monitor "DVI-0" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1920x1200" EndSubSection EndSection Section "Monitor" Identifier "HDMI-0" Option "RightOf" "DisplayPort-0" EndSection Section "Screen" Identifier "Screen2" Device "radeon" Monitor "HDMI-0" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1920x1080" EndSubSection EndSection