<div dir="ltr">I now answering my own question:)<div><br></div><div>ZaphodHeads is exactly what I was looking for.</div><div>I created 2 devices with Screen and ZaphodHeads, and it know works</div><div><br></div><div><br></div><div>Section "Monitor"<br>    Identifier  "External"<br>  Option "PreferredMode" "1920x1200"<br>    Option      "RightOf"       "Onboard"<br>EndSection<br><br><br>Section "Device"<br>    Identifier  "intelExt"<br>    Driver      "intel"<br>    BusID       "PCI:0:2:0"<br>    Option "ZaphodHeads" "HDMI1"<br>    Screen 1<br>EndSection<br><br>Section "Device"<br>    Identifier  "intelOnb"<br>    Driver      "intel"<br>    BusID       "PCI:0:2:0"<br>   Option "ZaphodHeads" "LVDS1"<br>    Screen 0<br>EndSection<br><br><br>Section "Screen"<br>        Identifier "Onboard"<br>        Monitor "Onboard"<br>        Device "intelOnb"<br>        SubSection "Display"<br>        EndSubsection<br>EndSection<br><br>Section "Screen"<br>        Identifier "External"<br>        Monitor "External"<br>        Device "intelExt"<br>        SubSection "Display"<br>                Modes "1920x1200"<br>        EndSubsection<br>EndSection<br><br>Section "ServerLayout"<br>        Identifier "DefaultLayout"<br>        Screen 0 "Onboard"<br>        Screen 1 "External"<br>EndSection<br></div></div>