[mythtv-users] OT - Connect to existing session (VNC)

Joseph A. Caputo jcaputo1 at comcast.net
Thu Mar 16 21:16:00 UTC 2006


On Wednesday 15 March 2006 15:31, Joacim J wrote:
> Hi,
>
> I have the mythtv user logged in at the physical MythTV box and then
> I want, from a remote location (WinXP), connect a VNC (RealVNC)
> client to the same session. Is this possible and if so how?
>
> Using FC4.

Recent versions of both XFree86 and X.org have a built-in Xvnc module 
that 'exports' the live X display.  There have been some recent threads 
on how to do this.  Try searching the list archives for "vnc x.org".  
The first thread has useful information.

Note that you won't be able to watch video in the VNC session -- you'll 
just see a blank (probably blue) screen.  This is because video output 
uses hardware features (like Xv or XvMC) that can't be emulated by the 
Xvnc server.  So, the remote VNC session is only good for navigating 
the Myth menus & other screens, but not watching video -- with one 
exception:  you could run the frontend with "env NO_XV=1 mythfrontend", 
which will cause Myth to use the standard X11 SHM mechanism for 
display.  This might allow you to watch video over VNC (better have a 
fast network connection), but your frontend CPU usage will dramatically 
increase while watching video, because all decoding & scaling has to be 
done in software instead of relying on the video card.

-JAC


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