I have a problem with running dual-screen on Ubuntu 12.04 with RADEON 6450. This card have VGA, DVI and HDMI ports. I try to connect VGA + DVI (im plug monitor to DVI with VGA to DVI connector). Both monitors works when I plug them to VGA port, but when I plug one to VGA and one to DVI - that monitor connected to DVI say that it have no Signal.
I use AMD Radeon 6450 Driver and standard interface. Where may lay problem?
Many thanks for any anwser