My environment is an Intel CoreDuo processor with an ATI Radeon HD 4870x2
When querying for devices, I obtain 3 (#0: Intel CPU; #1: ATI RV770; #2 #1: ATI RV770).
If I use the device #0 or #1, everything works as expected, but if, on the other hand, I use device #2, I get nothing in the output.
Did anybody else have a similar experience with an Radeon HD 4870 x2 ?
Would I need to disable from within Control Center?
Do you have a test case which reproduces the problem? Could you post it?