dual monitor

[~D]

Hi,

Ubuntu 10.04.2
Videocard: Radeon HD 5000 series ATI
CPU, i7 with integrated GPU

How do I get my dual monitor working? I like to use the videocard and 
not the integrated GPU. Which driver do I need and is it possible to use 
the open source driver?

Tell me if you need more info:


Regards,

~D


02:00.0 VGA compatible controller: ATI Technologies Inc Device 68f9
     Subsystem: PC Partner Limited Device e153
     Flags: bus master, fast devsel, latency 0, IRQ 16
     Memory at d0000000 (64-bit, prefetchable) [size=256M]
     Memory at fbac0000 (64-bit, non-prefetchable) [size=128K]
     I/O ports at ee00 [size=256]
     [virtual] Expansion ROM at fba00000 [disabled] [size=128K]
     Capabilities: <access denied>

02:00.1 Audio device: ATI Technologies Inc Manhattan HDMI Audio 
[Mobility Radeon HD 5000 Series]
     Subsystem: PC Partner Limited Device aa68
     Flags: bus master, fast devsel, latency 0, IRQ 33
     Memory at fbafc000 (64-bit, non-prefetchable) [size=16K]
     Capabilities: <access denied>
     Kernel driver in use: HDA Intel
     Kernel modules: snd-hda-intel

03:00.0 VGA compatible controller: ATI Technologies Inc Device 68f9
     Subsystem: PC Partner Limited Device e153
     Flags: fast devsel, IRQ 10
     Memory at e0000000 (64-bit, prefetchable) [disabled] [size=256M]
     Memory at fb9c0000 (64-bit, non-prefetchable) [disabled] [size=128K]
     I/O ports at be00 [disabled] [size=256]
     [virtual] Expansion ROM at fb900000 [disabled] [size=128K]
     Capabilities: <access denied>

03:00.1 Audio device: ATI Technologies Inc Manhattan HDMI Audio 
[Mobility Radeon HD 5000 Series]
     Subsystem: PC Partner Limited Device aa68
     Flags: bus master, fast devsel, latency 0, IRQ 34
     Memory at fb9fc000 (64-bit, non-prefetchable) [size=16K]
     Capabilities: <access denied>
     Kernel driver in use: HDA Intel
     Kernel modules: snd-hda-intel