Dual Output on Mobility Radeon HD 3470

[Richard Palmer]

Dear Michel,

> > Sorry, I should have said that this starts at login; both monitors
> > work in text mode (showing cloned output) but when gdm starts one
> > monitor goes into power saving mode.
> 
> Please provide the output of xrandr at that point.

I've run it just after login:

Screen 0: minimum 320 x 200, current 3360 x 1050, maximum 3360 x 1050
DisplayPort-1 connected 1680x1050+1680+0 (normal left inverted right x
axis y axis) 433mm x 270mm
   1680x1050      60.0*+   59.9  
   1280x1024      75.0     60.0  
   1440x900       59.9  
   1280x800       59.9  
   1152x864       75.0  
   1280x720       60.0  
   1024x768       75.0     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        75.0     72.8     66.7     59.9  
   720x400        70.1  
DisplayPort-0 connected 1680x1050+0+0 (normal left inverted right x axis
y axis) 434mm x 270mm
   1680x1050      59.9*+
   1280x1024      75.0     60.0  
   1152x864       75.0  
   1024x768       75.0     60.0  
   800x600        75.0     60.3  
   640x480        75.0     59.9  
   720x400        70.1  

cheers,

Richard

-- 
Richard Palmer			| Centre for E-Research &
Systems Manager			| Centre for Computing in the Humanities
richard.d.palmer at kcl.ac.uk	| King's College London
Tel: 0207 848 1973