I have a P8Z77-V Pro with a Gainward GeForce GTX 560Ti 2048MB (2GB) Phantom Edition Graphics Card graphics card. I have a monitor connected to the HDMI and a second montor connected to the VGA of the graphics card.
I cannot get it to operated as a dual monitor in Ubuntu – only the VGA monitor is detected (I also note that during boot-up, the BIOS also only recognises the VGA channel with the Boot-up messages only being displayed on the VGA).
I’ve tried using Ubuntu default drivers and two version of Gainward drivers that Ubuntu suggests and in all situations, Ubuntu display manager does not detect the HDMI channel.
Before I dig into the Graphics card and alternate drivers I want to rule out the BIOS settings – has anybody got a similar set up working with dual screens in Ubuntu?