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I want to make use of an old laptop by extending my the desktop from my main PC onto the monitor of this other, old laptop over a LAN connection.

I've looked into Xdmx/dmx, but the project seems to have been dead for a while.

Are there any other alternatives or will I have to cobble my own script together?

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Have you tried remote desktop viewer ? –  Srinivas Gowda May 14 '12 at 19:06
    
That doesn't allow me to extend the desktop, It's only a remote viewer. –  jackweirdy May 14 '12 at 19:50
    
Synergy is much easier if you don't need to drag windows eg if you just want to run a browser on the extra display. –  Alistair Buxton May 23 '12 at 9:51
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2 Answers

up vote 7 down vote accepted
+50

enter image description here

The Xdmx project is still active you can download the files here

http://packages.debian.org/squeeze/xdmx

and here's a video on setting Xdmx

http://www.youtube.com/watch?v=YOzRCBGDVaE

enter image description here

You can download the source files from

http://dmx.cvs.sourceforge.net/viewvc/dmx/dmx/xc/

And just to keep you posted that the DMX software has been integrated into the X.org server software.

enter image description here

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do you know where I can get the source? –  jackweirdy May 21 '12 at 17:08
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You can browse/download the source code from dmx.cvs.sourceforge.net/viewvc/dmx/dmx/xc –  Rupali May 25 '12 at 13:54
    
Thank you, I've managed to install it on Ubuntu 12 but on Ubuntu 13, there are a few dependency conflicts: libaudit1 vs libaudit0. I don't know whether it's possible to keep two version of a shared lib at the same time. Probably it does't matter, you just need one machine with Xdmx running but I wanted to extend the desktop of my other newer machine –  ZiglioNZ Sep 17 '13 at 2:08
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http://www.virtualgl.org even allows openGL!

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Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. –  WarriorIng64 May 24 '12 at 2:21
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