(=) NVIDIA(0): will be used as the requested mode. (=) NVIDIA(0): No modes were requested the default mode 'nvidia-auto-select' (II) NVIDIA(0): Assigned Display Device: DFP-0 (**) NVIDIA(0): enabled on all display devices.) (**) NVIDIA(0): device Acer X191W (DFP-0) (Using EDID frequencies has been (**) NVIDIA(0): Using HorizSync/VertRefresh ranges from the EDID for display (-) NVIDIA(0): NVIDIA TV Encoder (TV-0): 400.0 MHz maximum pixel clock (-) NVIDIA(0): Connected display device(s) on GeForce 8400 GS at PCI:1:0:0 The relevant section of my Xorg.0.log here:

Shouldn't I see my second display/TV in gnome system settings and be able to just enable it if things are set up properly? I can get multihead working using nvidia-settings to make an nf(twinview), but is this the proper/only way to do this? it seems Xorg is detecting/loading my TV-out without an nf file?.

my problem: In gnome system settings (gnome-shell/3.4) in details it shows graphics: unknown', and in gnome 3 display settings it only recognizes my acer LCD monitor. I'm using nvidia-proprietary drivers with a geforce 8400GS, the card has a tv-out via s-video, a quick scan of Xorg.0.log shows that 'nvidia tv encoder' is listed as a connected display device on GeForce 8400 as (TV-0) (it also lists my acer LCD).

Acer x191w monitor detail