idea: screen-like utility for X11 / proxy server

Jay R. Ashworth jra at
Mon Apr 14 16:54:58 PDT 2008

On Sun, Apr 13, 2008 at 11:21:16PM +0100, Alan Cox wrote:
> > I think xnest *might* do that.  Alternatively, you can use Xvnc, and
> > run your "actual" desktop behind that, with a "bare" Xserver running
> > the client on the physical VGA adapter, which is actually how the
> > original AT&T VNC guys used it.
> Xvnc will do it but that costs you a lot of desktop performance as VNC
> doesn't expose things like compositing hardware acceleration (or much
> acceleration at all) across the interface.

No... but it doesnt *do* the accelleration, either, since the frame
buffer is virtual.

So the question is: are you trying to get work done, or have a pretty
desktop?  :-)

> In theory disconnect/reconnect is a toolkit problem, but toolkits that
> support it are a bit lacking. A pity really because another natural use
> for this is virtualisation - moving your desktop virtual machine between
> your desktop and laptop and other machines when travelling or switching
> office.

Is it, though?  The people who note that the X architecture natively
stores lots of stuff in the server, and that this makes it
theoretically difficult to define how this should be done, rather than
merely hard, may have something...

-- jra
Jay R. Ashworth                   Baylink                      jra at
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