[radeon] Dual-Head, second display stays black

[Andreas Juch]

Hi!

I have a Xserver 1.6.1 and the radeon release 6.12.2 here. I have two
screens connected to the two DVI outputs of a RHD 3470 card. The 22"
display works fine, the 17" display stays black (monitor's OSD says "no
signal found"). According to xrandr everything _should_ be fine:

Screen 0: minimum 320 x 200, current 2960 x 1050, maximum 2960 x 1050
DVI-1 connected 1280x1024+1680+0 (normal left inverted right x axis y axis) 338mm x 270mm
   1280x1024      60.0*+   75.0     72.0     60.0* 
   1152x864       75.0  
   1024x768       75.0     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3  
   640x480        75.0     72.8     66.7     59.9  
   720x400        70.1  
   640x350        70.1  
DVI-0 connected 1680x1050+0+0 (normal left inverted right x axis y axis) 474mm x 296mm
   1680x1050      59.9*+
   1280x1024      75.0     60.0  
   1440x900       75.0     59.9  
   1280x960       60.0  
   1280x800       74.9     59.9  
   1152x864       75.0  
   1152x720       60.0  
   1024x768       75.0     60.0  
   832x624        74.6  
   800x600        75.0     60.3  
   640x480        75.0     59.9  
   720x400        70.1  

I pasted the Xorg.log to http://pastebin.ca/1405612 . I got these two
screens to work with radeonhd and fglrx, is there a chance to get that
working with radeon too?

Thanks in advance,
Andreas