I finally got my tv-out working on Xubuntu, I had already made it work but I re-installed my OS and did not remember what I did, so I had to start from scratch.

Just follow these steps to make it work:

Note:  output, set and off options are precedeed with two hyphens (i.e. – - output). I don’t know why, in this post, it seems like they have just one.

1) Plug your TV output to your TV.

2) Run the following command on a terminal window:

xrandr –output S-video –set load_detection 1

This will scan and detect the TV connection. If you run:

xrandr -q

it will return something like this:

Screen 0: minimum 320 x 200, current 1024 x 768, maximum 1024 x 1024
VGA-0 disconnected (normal left inverted right)
LVDS connected 1024×768+0+0 (normal left inverted right) 0mm x 0mm
1024×768 60.0*+ 60.0
800×600 60.3
640×480 59.9
S-video connected (normal left inverted right)
800×600 59.9 + 60.3
If you look at the last two lines you will see that the TV (named S-video) is “connected”. If you see that you S-video output is “disconnected”, try rebooting your computer leaving the TV cable plugged. After reboot, repeat this step in order to ensure that the TV has been detected.

3) This video card only supports 800×600 for the S-video output and 1024×768 for the monitor. So to avoid resolution problems (this means seeing the entire desktop on your TV), change the resolution to 800×600, before turning the TV output on:

xrandr -s 800×600

4) Now that you have the proper resolution, you can turn the TV output on. Just run the following command:

xrandr –output S-video –auto

You should see your desktop on your TV now!

Here is a list of other useful commands.

Turn off TV output: xrandr –output S-video –off

Turn monitor off (I do this when I see movies): xrandr –output lvds –off

Turn monitor on: xrandr –output lvds –auto

Turn resolution back to 1024×768: xrandr -s 1024×768

Hope this helps!