On Wed, Jan 11, 2017 at 12:43:02AM +0900, Mark Fletcher wrote: > > So a generic graphics card circa 2009, with a nVidia GeForce 9800 GTX+ > chipset, with an old D-type connector, a DVI connector, and an HDMI > connector -- would you expect it to be able to drive more than one > display? Given the manual is long since lost and was in a foreign > language anyway, any way to interrogate the card to see its > capabilities? > > I used to use the DVI connector to connect to the monitor, then later > switched to the HDMI, and didn't have to do anything except plug in the > right cable at both ends to do that. So clearly, out of the box the same > image is being fed to all ports. Any way to find out if it is capable of > being cleverer than that?
I would expect it to be able to drive two monitors with different pictures, and possibly three. If you are using open drivers, `xrandr` should be able to list the available outputs and modes and change between them. If you are using proprietary NVidia drivers, "nvidia-settings" should be able to work for you. -dsr-