[radeon] Dual-Head, second display stays black

[Alex Deucher]

On Mon, Apr 27, 2009 at 9:56 PM, Andreas Juch <xorg at juch.cc> wrote:
> 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?

Should work.  Does:
sleep 5; xset dpms force off
cause both screens to come back on when you move the mouse?
If so, can you try with the radeon driver from git?

Alex