LinuxQuestions.org - S3 Savage IX dualhead configuration

savage(4) man page says dualhead operation is supported on MX, IX, and SuperSavage chips. But it doesn't tell how to configure and enable dualhead operation. If i type xrandr in console, it says:

Code:

Screen 0: minimum 320 x 240, current 1024 x 768, maximum 1024 x 768

default connected 1024x768+0+0 0mm x 0mm

  1024x768      60.0*

  800x600        60.0    56.0

  640x480        60.0

  640x400        60.0

  512x384        70.0    60.0

  400x300        60.0    56.0

  320x240        60.0

So, it doesn't support different outputs out of the box.
My chip:

Code:

$ lspci|grep VGA

01:01.0 VGA compatible controller: S3 Inc. 86C270-294 Savage/IX-MV (rev 13)

How can i enable dualhead operation?
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Edit: I checked this controller in windows, and it really does support dualhead operation, so the question is _how_ to enable this in xorg.