[FreeNX-kNX] Re: Shadow session - NX client loads the session window but closes with black screen

[José Pablo Méndez Soto]

Thanks Chris,

and to everybody:


I can now establish a session from computer B to computer A(server), and
then, from another computer, including computerA itself, shadow session on
computer B. That makes no sense to me at all. I interpreted the explanation
at <
http://openfacts2.berlios.de/wikien/index.php/BerliosProject:FreeNX_-_HowtoShadow#An_example_nxshadowacl>
thinking that you can shadow the local user, meaning the person sitting in
front of the NX server, aka computer A.

I need to shadow the local user because of drivers and sound requirements.
Here is the scenario:

   - I need to join a webex meeting, a remote presenter (another coworker
   within the company) will share his desktop and establish an audio conference
   on the local session.
   - I will be sitting next to another person in the local session.
   - The audio jack of the server PC is split in 2 ports.
   - I will shadow the local session to participate in the remote
   presentation, the 2 PCs are next to each other, so my coworker will have a
   set of headphones and I will have the other, sharing the audio directly from
   the source, and I will get the video from the NX session
   - If I establish a session from the NX server itself, then we get no
   audio because the webex meeting is not linked to the local session, even
   when the client runs on the server itself, the meeting was started on a
   remote session so that it can be shadowed.

How, then, can I shadow the local user?

THanks,


 *José Pablo Méndez
     *********


On Mon, Feb 28, 2011 at 7:00 AM, <chris at ccburton.com> wrote:

>
> José Pablo Méndez Soto <auxcri at gmail.com> wrote on 23/02/2011 18:17:55:
>
> [SNIP]
>
> > The only things I modified from the instructions above, was the
> > shell for the script. It says to use the she-bang header #!/bin/sh,
> > but if I run it like that, it throws this error:
> >
> > [:  6:  1: unexpected operator
>
> Hmm I've not seen this one before ????
>
> for aa in `cat /etc/shells`;do [ -e "$aa" ] && [ $(grep -c "unexpected
> operator" "$aa") -gt 0 ] && echo $aa;done
>
> So, you are using
>
>         /bin/ash
>
> by the look of it.
>
> Mostly
>
>          /bin/sh -> bash
>
> >
> > So I changed the header to #/bin/bash and the error went away. I
>
> Did you actually leave out the ! in #!/bin/bash ??
>
> Doesn't sound like it.
>
> [SNIP]
> > testing the script. If I do a
> > ./nxshadowacl user1; $?
> >
> > Then I get:
> >
> > 0: Command not found.
>
> That's because it can't execute "0", the return code in $?.
> Did you mean to use
>
> ./nxshadowacl user1;    echo $?
>
> [SNIP]
>
> > Display Type             Session ID                       Options
> > Depth Screen         Status      Session Name
> > ------- ---------------- -------------------------------- --------
> > ----- -------------- ----------- ------------------------------
> > 2000    unix-gnome       26929CEE4FC75CE9EC279D996186CD6B --D--
> > PSA    32 1274x947       Running     Ubuntu Server (willy) (Shadowed)
> > 0       Local            8332C75EC2C8A37A5D3818BCBBA64C29
> > --------                      Running     X0 (Local)
> > 0       Local            0DB46FC6CB1D1BC759E33B4A3FB3DC54
> > --------                      Running     X0 (Local)
> >
> >
> > NX> 148 Server capacity: not reached for user: .*
> > NX> 105 attachsession  --link="lan" --backingstore="1" --
> > encryption="1" --cache="16M" --images="64M" --shmem="1" --shpix="1"
> > --strict="0" --composite="1" --media="0" --session="Shadow" --
> > type="shadow" --client="winnt" --keyboard="pc102/us" --
> > id="0DB46FC6CB1D1BC759E33B4A3FB3DC54" --display="0"
> >
> > NX> 596 Could not find shadowed session
> > 0DB46FC6CB1D1BC759E33B4A3FB3DC54. Session failed.
>
> Don't try to shadow the "Local" sessions.
>
> Aim at the
>
> "2000    unix-gnome       26929CEE4FC75CE9EC279D996186CD6B"
>
> one (in this instance)
>
> > Thanks in advance,
> >
> >  José [attachment "sessionlist.jpg"
>
> Good luck. Let us know how you get on
>
> cb
> ________________________________________________________________
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>    Then please write up the solution in the FreeNX Wiki/FAQ:
>
> http://openfacts2.berlios.de/wikien/index.php/BerliosProject:FreeNX_-_FAQ
>
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>                 http://www.nomachine.com/kb/
>
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