No signal on TV from nvidia 8400m g s-video output

December 25, 2011 at 08:03:08
Specs: Windows XP SP3
My MSI laptop has a Nvidia 8400m g graphics card. I want to use my TV (LG 32LK450 - to the AV2 RCA input) as a display too. I connected it to the S-video connector with an s-video-rca adaptor. After the forced TV recognition and a reboot, the multi-display modes are available - even if nothing is connected in the S-video or VGA output!
Meanwhile on the TV.. no signal...
With no forced TV detection it doesn't detect the TV.
I have installed the latest drivers. The input of the TV, the RCA cable and the adaptor are all ok, 'cause if I plug it into my desktop PC's ATI Radeon S-video connector, the cloned display shows up on the TV. Therefore the problem must be with the Nvidia card.

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#1
December 25, 2011 at 08:45:10
Sounds icky.....does the tv need the input for svideo selected? Does it require a certain channel? Not sure if this applies or is any help you but....how are you adjusting the display properties? EX: on some systems that used an intel graphics card....if you went in and changed the display properties and settings through windows....either nothing changed or it did not stay....because to properly change the setting you HAD to use the intel interface for the graphics properties to be changed correctly. So I suggest using the nvidia control panel to make your changes. When plugged in and the tv set to svideo input, you should get the option of the two monitors and whether to clone, extend the desktop etc. Sounds like you have things right perhaps someone else will have some other ideas....my 2 cents, and Merry Christmas!

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#2
December 25, 2011 at 10:56:20
TV and Computer are two different display formats. Are you setting them the same?

1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.


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#3
December 26, 2011 at 03:34:18
On the TV I selected the correct input (and the TV knows that something plugged in the AV2 input - yet no signal), and on the laptop I used the Nvidia CP to set the two displays. Of course I tried different modes like Clone and DualView, but neither of them was useful. Also tried with Multidisplay wizard countless times but still no change. In dualview I set the TV to PAL format (but tried NTSC too), and lower the resolution 640 - 800 - 1024 (although the TV is up to 1900 :) ). Tried to change the refresh rate between 50 - 100 Hz but it didn't help as well.

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#4
December 26, 2011 at 08:49:09
Then you have to maybe test computer on different display or different computer on that display.

1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.


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