I have two computer screens and one TV.
My Nvidia card has two ports (HDMI + VGA), connected to my computer screens. My motherboard has a HDMI port connected to my TV.
I want to use the TV as a third screen to watch videos from my computer (works on Linux)
First I did this and it worked for the two computer screens, but not the TV :
Then I added a section and changed the BusID line to match the Xorg chapter of the handbook, but that was worse (didn't work on my computer screens)
(commenting the second section did nothing so I assume it's the BusID format)
Now I have two sections but the first format : both computer screens work together, but the TV is not shown in the Displays widget. Its screen is black, but with a cursor, like when you first do startx to verify Xorg works. So it seems it is detected and connected to Xorg, but not in the graphical tool to move screens around, etc (I'm on Mate, but also have XFCE)
Here are the two cards :
Any ideas? 
My Nvidia card has two ports (HDMI + VGA), connected to my computer screens. My motherboard has a HDMI port connected to my TV.
I want to use the TV as a third screen to watch videos from my computer (works on Linux)
First I did this and it worked for the two computer screens, but not the TV :
Code:
Section "Device"
Identifier "Card0"
Driver "nvidia"
BusID "PCI:1:0:0"
EndSection
Code:
Section "Device"
Identifier "Card0"
Driver "nvidia"
BusID "pci0:1:0:0"
EndSection
Section "Device"
Identifier "Card1"
Driver "intel"
BusID "pci0:0:2:0"
EndSection
Now I have two sections but the first format : both computer screens work together, but the TV is not shown in the Displays widget. Its screen is black, but with a cursor, like when you first do startx to verify Xorg works. So it seems it is detected and connected to Xorg, but not in the graphical tool to move screens around, etc (I'm on Mate, but also have XFCE)
Here are the two cards :
Code:
vgapci1@pci0:0:2:0: class=0x030000 rev=0x09 hdr=0x00 vendor=0x8086 device=0x0162 subvendor=0x8086 subdevice=0x2032
vendor = 'Intel Corporation'
device = 'IvyBridge GT2 [HD Graphics 4000]'
class = display
--
vgapci0@pci0:1:0:0: class=0x030000 rev=0xa1 hdr=0x00 vendor=0x10de device=0x0fc6 subvendor=0x1462 subdevice=0x8a96
vendor = 'NVIDIA Corporation'
device = 'GK107 [GeForce GTX 650]'
class = display
