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Old 02-23-10, 10:51 AM   #1
gastverh
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Default Twinview screens configuration - PC 1,6/1 - TV 1,3/1

Hello,

Now that I can use Twinview on the TV to show video streams or slideshows, please I have another question.

My PC has a LCD monitor 16/10 and my TV has an old 16/12 screen.

Because my TV is not a LCD-type, many broadcasts are showed with two black borders, one on the top and the second at the bottom of the TV-screen, so the showed view is similar to an LCD-TV.

Now in my [gastonv@d51520994 ~]$ cat /etc/X11/xorg.conf I have:
Code:
Option      "metamodes" "CRT-0: 1280x800 +0+0, TV: 1024x768 +0+0"
With this configuration the whole hight of the TV-screen is used and that makes that a part of the real view is missing because of that difference of ratio.

Please, can I change that line to get 2 small black borders, so that I can see the whole PC-LCD-screen on the TV?

Hoping my questing is clear to understand,
Many thanks in advance for helping tips,
Greetings,
Gaston Verhulst.
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Old 02-23-10, 10:59 AM   #2
AaronP
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Default Re: Twinview screens configuration - PC 1,6/1 - TV 1,3/1

You can't do that within the metamode, you have to change the scaling mode for that display. You can do it in nvidia-settings or by using the "Scaling" property of the FlatPanelProperties option. See the README for details.
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Old 02-23-10, 11:00 AM   #3
AaronP
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Default Re: Twinview screens configuration - PC 1,6/1 - TV 1,3/1

Actually, now that I think about it, that option may not work for old-style TV out. I'll need to check on that and get back to you.
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Old 02-23-10, 11:41 AM   #4
gastverh
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Default Re: Twinview screens configuration - PC 1,6/1 - TV 1,3/1

Hello,
Thanks for your quick reply.
I have looked again in NVIDIA X Server Settings and the Item TV-0 (TV-0) actually shows the following configuration items I see.

Code:
TV Encoder NVIDIA (of course)
TV Refresh Rate: 60,00
TV Overscan: 8
TV Flicker Filter: 127
TV Hue: 0
TV Saturation: 197
Digital Vibrance: 0
Image Sharpening: 0
Then in the help:
Code:
TV Overscan
The TV Overscan slider adjusts how large the image is on the TV.
To test something in that window, I tried to change that Overscan value, but I could not move the slider.

Again many thanks for trying helping.
Greetings,
Gaston Verhulst.
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Old 02-24-10, 12:39 PM   #5
gastverh
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Default Re: Twinview screens configuration - PC 1,6/1 - TV 1,3/1

Hello,

In the mean time I have experiment a little bit in order to center the view on the TV-screen.
The best result I could find was with the following line in xorg.conf
Code:
Option      "metamodes" "CRT-0: 1280x800 +0+0, TV: 1024x768 +125+0"
Greater values than 1024x768 gives a black TV-screen.
Now, the hight of the TV-screen is perfect filled with the hight of the PC-screen.
But because of the different screen ratios the TV-view is two times 4cm shorter than the PC-view is.
With this I can see 80% of the PC-screen-length and on my PC-screen background I see the contour outline of what is showed on the TV.

For info: looking normally (without Twinviev) the TV, when a 16:10 broadcast is showed, I have 2 borders of 4cm, one at the top, the second one at the bottom of the TV-screen.
I don't know if it is possible to get something similar with Twinview.

Awaiting for another configuration,
Greetings,
Gaston Verhulst.
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