xorg.conf

Section "ServerFlags"
    Option         "DefaultServerLayout" "Layout0"
#    Option         "AllowMouseOpenFail"  "true"
    Option         "AutoAddDevices"      "false"
    Option         "AutoEnableDevices"   "false"
    Option         "DontZap"             "false"
#    Option         "Xinerama" "0"
    Option         "AutoAddGPU" "false"
EndSection

Section "ServerLayout"
    Identifier     "Layout0"
    Screen         0  "Screen0" 0 0
    InputDevice    "kbd_0" "CoreKeyboard"
    InputDevice    "mouse_0" "CorePointer"
    Option         "AllowEmptyInput"       "true"
#    Option        "DontVTSwitch"          "true"
EndSection

Section "ServerLayout"
    Identifier     "Layout1"
    Screen         1  "Screen1" 0 0
    InputDevice    "kbd_1" "CoreKeyboard"
    InputDevice    "mouse_1" "CorePointer"
    Option         "AllowEmptyInput"       "true"
    Option     "DontVTSwitch"          "true"
EndSection

Section "Module"
#    Load           "dbe"
#    Load           "extmod"
#    Load           "type1"
#    Load           "freetype"
#    Load           "glx"
#    Load      "dri2"
#    Load      "glamoregl"
EndSection

Section "InputDevice"
    Identifier     "kbd_0"
    Driver     "evdev"
    Option         "Device"        "/dev/input/by-path/pci-0000:00:1d.7-usb-0:6.4:1.0-event-kbd"
    Option         "GrabDevice"    "on"
    Option     "XkbRules" "xorg"
    Option     "XkbModel" "dellusbmm"
    Option     "XkbLayout" "br"
    Option         "Protocol"      "Standard"
EndSection

Section "InputDevice"
    Identifier     "kbd_1"
    Driver         "evdev"
    Option         "Device"        "/dev/input/by-path/pci-0000:00:1d.7-usb-0:5.1.3.4:1.0-event-kbd"
    Option         "GrabDevice"    "on"
    Option     "XkbRules" "xorg"
    Option     "XkbModel" "dellusbmm"
    Option     "XkbLayout" "br"
    Option         "Protocol"      "Standard"
EndSection

Section "InputDevice"
    Identifier     "mouse_0"
    Driver         "evdev"
    Option         "Device"        "/dev/input/by-path/pci-0000:00:1d.1-usb-0:1:1.0-event-mouse"
    Option         "GrabDevice"    "on"
EndSection

Section "InputDevice"
    Identifier     "mouse_1"
    Driver         "evdev"
    Option         "Device"        "pci-0000:00:1d.7-usb-0:5.1.2:1.0-event-mouse"
    Option         "GrabDevice"    "on"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    Option     "VendorName" "Unknown"
    Option     "ModelName" "Generic Autodetecting Monitor"
#    Option    "DPMS" "true"
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    Option     "VendorName" "Unknown"
    Option     "ModelName" "Generic Autodetecting Monitor"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "fglrx"
#    Option        "AccelMethod" "glamor"
#    Option        "AccelMethod" "EXA"
    VendorName     ""
    BoardName      ""
    BusID          "PCI:2:0:0"
    Screen          0
#    Option         "EXAVSync"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "fglrx"
    VendorName     ""
    BoardName      ""
    BusID          "PCI:3:0:0"
    Screen          1
#    Option         "AccelMethod" "UXA"
#    Option         "TearFree" "1"
EndSection

Section "Screen"
    Identifier "Screen0"
    Device     "Device0"
    Monitor    "Monitor0"
    DefaultDepth     24
    SubSection "Display"
        Depth     24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection