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LINUX-L  2007

LINUX-L 2007

Subject:

Re: wayOT: 2 displays, 1 box, different output

From:

Bill Merriam <[log in to unmask]>

Reply-To:

Platform Independent Linux List! <[log in to unmask]>

Date:

Mon, 15 Oct 2007 09:30:10 -0400

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text/plain

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text/plain (51 lines)

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Jon Akers wrote:
> Arthur Sherman wrote:
>> 2 displays connected to same box with different output.
>>
>> As an example:
>> Assume car PC system;
>> There are 2 LCD displays instralled into headrests, playing media file
>> simultaneously on both - usual stuff, VGA hub;
>> There is a LCD display in front of driver, running GPS Navigator.
>>
>> Can I physically connect them to same box and have such an effect?
>> Is this possible at all?
>>
>> I need to find a solution, even it involves dual VGA card or else.
>>
>> Your help is highly appreciated.
>> :)
>>
>> TIA!
>> Arthur
> 
> This shouldn't be an issue, really. What will be interesting is if you
> want two different input locations for the two displays. That would make
> life a bit more interesting.
> 
> For the two displays, basically all you need are two different video
> cards in the system. Then you can run two copies of X on the system and
> have them attach to each video card.
> 

Nvidia chips support "twin-head", two displays with the same or
different content.  Many cards with those chips have multiple display
outputs, usually with different connectors but somethings with the same.
 X uses :0.0 for the first and :0.1 for the second.

Bill
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