Ubuntu 14.04 and 3 monitors

[CU]

I have a Quadro NVS 450, but I can only get 2 of the 3 monitors to work. When I run nvidia-settings it show the 3rd monitor as disabled. To enable it I must create a new x screen. But I don't think that is what I want. I don't need mulitiple x screens. I just want one large desktop that I can drag windows around on.

I did enable it by creating a new x screen, but then I couldn't see it in Ubuntu's display settings. So, I reverted that change.

Edit: It seems on my old linux box, I had a seperate x screen for each monitor and used Xinerama. But I thought Xinerama was old news now and Randi had replaced it?

 

[SunburstLP]

I haven't ran Nvidia since I bricked my 280 a few years ago, so I'm not super familiar with their driver these days, but I found a thread on reddit that may be of some use for you.

http://www.reddit.com/r/techsupport/comments/13vkup/3_monitors_on_linux_with_nvidia_gtx_670_can_it_be/

It's not super recent, but I think it's at least in the right neighborhood.

 

[CU]

Thanks. I think I read that thread last night. The trick I found was to enable base mosaic, which is only avaiable after you click on advanced in the nvidia settings app. Then I could enable the third monitor on x screen 0. Now if I could just speed up Unity.