Second monitor not being used

[Louis Turk]

Hi Peter Hutterer and/or Dave Airlie,

What is wrong with the following xorg.conf file that it won't use the
second monitor? The second monitor in fact goes into power saving mode
the instant X starts. The graphic card is HIS Radeon HD 6450, running on
latest 64 bit Archlinux full system upgrade. I've spent days using
google to try to find out how to fix this problem, trying every solution
suggested, but to no avail so far. Without Xinerama X can't load at all.

Section "Device"
    Identifier     "Device0"
    Driver         "radeon"
    Option         "ZaphodHeads"   "DVI-I"
    Screen         0
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "radeon"
    Option         "ZaphodHeads"   "VGA"
    Screen         1
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    Option         "Enable" "true"
    Option         "DPMS"
    Option         "Primary"    "false"
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    Option         "Enable" "true"
    Option         "DPMS"
    Option         "Primary"    "false"
    Option         "Right" "Monitor0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Monitor        "Monitor0"
    Device         "Device0"
    DefaultDepth   24
    Option         "TwinView" "0"
    SubSection "Display"
        Depth 24
        Modes "1680x1050" "1680x1050" #the resolutions of your monitors
        Virtual 3360 1050
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Monitor        "Monitor1"
    Device         "Device1"
    DefaultDepth    24
    Option         "TwinView" "0"
    SubSection "Display"
        Depth 24
        Modes "1680x1050" "1680x1050" #the resolutions of your monitors
    EndSubSection
EndSection

Section "InputClass"
    Identifier          "Keyboard Defaults"
    MatchIsKeyboard    "yes"
    Option              "XkbOptions" "terminate:ctrl_alt_bksp"
EndSection

Section "ServerFlags"
    Option    "Xinerama" "true"
EndSection

Section "ServerLayout"
  Identifier     "My X Server"
  Screen      0  "Screen0" 0 0
  Screen      1  "Screen1" RightOf "Screen0"
EndSection

Thanks in advance for any help.

Drl

PS xrandr is not working on my machine. I get: RandR extension missing

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