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Old 06-03-2006, 09:33 AM   #1
pjon
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Registered: May 2005
Location: Jonkoping, Sweden
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TV-picture on extrenal screen/projector


Hello

I have a problem with showing a TV-picture on a projector from my Laptop.

I have an IBM ThinkPad T43 with SuSE Linux Enterprise Desktop 10 (Beta). I have a TV-reciever plugged in and configured Kaffeine for watching TV.
Everything works well when watching TV on the internal screen. But when I try to show the TV on an projector it turns black on the projector. On the internal screen the TV plays and shows as normal. On the projector I see the desktop and the windows but the TV-picture is black.

I have configure Activated Dual Head Mode in Display settings with cloned multihead. I have tried several settings for the external screen, the TV-picture is still black.

Anyone have ideas?
 
Old 06-04-2006, 07:01 PM   #2
Electro
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Depending on your model, you have to manually change the xorg.conf or XF86config. GUI programs will not work.

nVidia graphics cards are preferred because their ease of setup. Computers with ATI and Intel graphics may have to use framebuffer. Unfortunately, LCD monitors do not work well with framebuffer modes.

You are saying where it shows the TV material. It is black on the TV or projector. That is how ATI cards work. They use a framebuffer for the acceleration to overlay the video on the window. You can use mplayer and use x11 as its video output device although it is a software scaler that is slow. The ATI acceleration should not be used when you use x11 as the video output device. If it still shows the black window with x11 as being the video output, use a VGA to TV converter (actually a rescanner) to output to the projector. You may have to turn off the LCD in the settings to make either VGA or S-Video to correctly display the TV material. I think the gatos project may have fix this problem by turning off some encyrption.

In the future, I recommend buying a notebook computer with nVidia graphics chips instead of ATI.
 
Old 06-05-2006, 05:54 AM   #3
pjon
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Registered: May 2005
Location: Jonkoping, Sweden
Distribution: SLES 9
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Thank you, Electro!

I run aticonfig with hte option --force-monitor=crt1,tv and then it worked! I have some disturbence in the picture but htat might be the digital reception is not so good where I am.
I have some "slow" pictures both on the internal and external screen. Didn't have that before what I can rememder though.

// PJON
 
  


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