dual head using HDMI output on ati radeon 5470

[Albert Wagner]

On 01/27/2011 07:02 PM, Jared Greenwald wrote:
> I ran into this previously with an on-board ATI graphics card on a
> home-built PC.  I'm pretty sure that ATI only allows one of each type
> of connection - ie one digital (hdmi/dvi) and one analog (vga).  Could
> be wrong, but I think that's the issue you're running into.
Yes, I have one of each type HDMI and vga.  I can get a vga signal out 
of the vga port, but I can get only scrolling lines from the HDMI.
> On Thu, Jan 27, 2011 at 7:39 PM, Albert Wagner<albertwagner at cox.net>  wrote:
>> I have Ubuntu 10.10 running on an HP G72 laptop with vga and HDMI  outputs
>> from an ATI Radeon 5470.  Dual heads is simple with vga: just use
>> System->Preferences->Monitors.  But, getting anything at all from the HDMI
>> output is proving to be very difficult.
>>
>> My digital monitor is an HP 2310e that looks outstanding when driven by a
>> dvi input on another machine.  But it has only digital inputs, no vga.
>>
>> I would really appreciate feedback from anyone using the Ubuntu Radeon
>> driver(KMS on is default) as to whether, and how, it can be coerced to
>> detect the HP 2310e and output through the Radeon 5470 HDMI plug.
>>
>>
>>
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