(In reply to comment #26)
> > 
> > marie-eve@Kimper /usr/lib $ bfgminer -n
> >  [2013-05-24 11:59:21] CL Platform 0 vendor: Mesa                    
> >  [2013-05-24 11:59:21] CL Platform 0 name: Default                    
> >  [2013-05-24 11:59:21] CL Platform 0 version: OpenCL 1.1 MESA 9.2.0         
> > 
> >  [2013-05-24 11:59:21] Platform 0 devices: 1                    
> >  [2013-05-24 11:59:21] 	0	AMD RS780                    
> 
> Sorry, OpenCL is not supported for RS780.
> 
Ok. I'm a bit surprise given that this GPU is in the R600 row at:

http://www.x.org/wiki/RadeonFeature#Decoder_ring_for_engineering_vs_marketing_names

I'll stop my effort to investigate this problem then.

Thank you for your prompt reply.