[X2go-dev] Desktop sharing

2010-03-22 Thread Peter Puk

As described here: http://www.x2go.org/index.php?id=72
Quote: "You may share their displays to help them or to discuss your 
projects."


How can i share a desktop, or as i understand:
"login to an already running desktop, to support the current working user."

In what way can i manage that. I'm already to access the "server" and 
login to another user, but not take over an existing session.


Ronnie
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Re: [X2go-dev] Desktop sharing

2010-03-24 Thread John A. Sullivan III
On Mon, 2010-03-22 at 22:19 +0100, Peter Puk wrote:
> As described here: http://www.x2go.org/index.php?id=72
> Quote: "You may share their displays to help them or to discuss your 
> projects."
> 
> How can i share a desktop, or as i understand:
> "login to an already running desktop, to support the current working user."
> 
> In what way can i manage that. I'm already to access the "server" and 
> login to another user, but not take over an existing session.
Hi, Ronnie.  I don't know a lot about these capabilities but I see that
no one more knowledgeable has responded so I'll take my best shot :-)

I believe X2Go currently supports their SpyGlass product.  This would
allow one desktop to see thumbnails of multiple desktops and, I assume,
then zoom in on an individual one.  I have never used it.

NoMachine does have a shadowing facility.  With it, one can open a new
session to an NX server which shadows and existing one.  It is slower
than native NX as it uses VNC, I believe, to perform its magic.  I do
not believe this is implemented in X2Go yet but is imminent.

In our environment, we opted to go for neither.  Specifically for our
environment, we found it was more practical to create a share/use
desktop icon on the virtual desktop.  Our users use their X2Go desktop
as their primary work space.  To have them leave it to open another X2Go
client in order to shadow another user seemed more complicated than we
needed and involved educating the users about choosing a shadow session
rather than just letting them click on the icon, take the defaults we
set, and work.  Now, they simply click on the Share Desktop icon to
allow others to see their desktop or View Another Desktop icon to
connect to another desktop.  All our users are remote but all their
virtual desktops are on the same network.  Thus, the performance is
splendid and we are using native NX to bring the shared desktop back to
the end user.  Much faster than shadowing.

The challenge for us was sharing display :0.  We are using Debian Lenny
desktops with KDE 3.  Krfb is broken (as it is in Ubuntu, too) and, even
when it does work is slow.  Regular vncserver does not share display :0
but creates a new display.

Our solution was to use x11vnc.  It is about the ugliest GUI I have ever
seen and is a bear to configure but it is blazingly fast and allows
access to display :0.  We then chose xvnc4viewer as the viewer rather
than Krdc.  Krdc evidenced some instability when used with X11vnc.

If it would be helpful, I can post our procedure and set up to the list.
Hope this helps - John

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Re: [X2go-dev] Desktop sharing

2010-03-24 Thread Paul van der Vlis
John A. Sullivan III schreef:

> Our solution was to use x11vnc.  It is about the ugliest GUI I have ever
> seen and is a bear to configure but it is blazingly fast and allows
> access to display :0.  We then chose xvnc4viewer as the viewer rather
> than Krdc.  Krdc evidenced some instability when used with X11vnc.

I've just tested Vino with Vinagre, this is the Gnome server/client for
VNC. You can connect to :0, looks nice, but it's slow.

> If it would be helpful, I can post our procedure and set up to the
> list.

Yes, I am interested. Do you maybe use the experimental "ncache speedup
feature"? I have never seen a fast VNC connection, even to localhost
it's real slow.

Why don't you use xtightvncviewer or ssvnc? (x11vnc likes the tightvnc
protocol).

With regards,
Paul van der Vlis.




-- 
http://www.vandervlis.nl/

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Re: [X2go-dev] Desktop sharing

2010-03-24 Thread Milan Knížek
Paul van der Vlis píše v St 24. 03. 2010 v 18:40 +0100:
> I've just tested Vino with Vinagre, this is the Gnome server/client for
> VNC. You can connect to :0, looks nice, but it's slow.
Give a try to Remmina:
http://remmina.sourceforge.net/screenshots.shtml

Works with vino server, it is faster and integrates to GNOME/Xfce panel.

Though, I have not tried connecting to :0

regards,

Milan Knizek
knizek (dot) confy (at) volny (dot) cz
http://www.milan-knizek.net - About linux and photography (Czech
language only)

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Re: [X2go-dev] Desktop sharing

2010-03-24 Thread John A. Sullivan III
On Wed, 2010-03-24 at 18:40 +0100, Paul van der Vlis wrote:
> John A. Sullivan III schreef:
> 
> > Our solution was to use x11vnc.  It is about the ugliest GUI I have ever
> > seen and is a bear to configure but it is blazingly fast and allows
> > access to display :0.  We then chose xvnc4viewer as the viewer rather
> > than Krdc.  Krdc evidenced some instability when used with X11vnc.
> 
> I've just tested Vino with Vinagre, this is the Gnome server/client for
> VNC. You can connect to :0, looks nice, but it's slow.
Yes - similar to Krfb/Krdc
> 
> > If it would be helpful, I can post our procedure and set up to the
> > list.
> 
> Yes, I am interested. Do you maybe use the experimental "ncache speedup
> feature"? I have never seen a fast VNC connection, even to localhost
> it's real slow.
We did not use it.  All of our desktops are running on a limited number
of very large VServer hosts - so we use virtual machine per virtual
desktop.  Since it is a shared memory environment, we were concerned
about inflating memory use.  We were not as concerned about performance
because most of the traffic is literally inside the VServer host and
does not even hit the Gb ethernet connections.
> 
> Why don't you use xtightvncviewer or ssvnc? (x11vnc likes the tightvnc
> protocol).
We did not use ssvnc because we did not see it in the Lenny repository
or in lenny-backports.  It also has a very ugly interface even though
very powerful.  On the other hand, the xtightvncviewer interface was too
minimal.  xvnc4viewer was a nice balance for our environment - it looked
good and gave ready access to options.  We also did not have to
specify :0 on the target - intuitive for techs but not for end users.
Simply entering the target name without the display means fewer help
desk calls.

The biggest challenge for us was getting the right combination of the
truly overwhelming x11vnc options.  The combination we eventually
settled on is:

x11vnc -display :50 -shared -accept "popup" -gone "popup" -noxdamage
-gui start,simple,tray=setpass

There are some caveats here.  Because the traffic is in an isolated data
center with no users on the local network and because the traffic does
not even tough the network in most cases, we did not implement ssl and
we did not tunnel it through ssh to avoid the overhead.  We also found
xvnc4viewer did not support ssl (although we did not try very hard since
we did not need it).  We did want the users to set a password every time
they started it.  The noxdamage apparently compensates for a bug and
provides much better performance when disabled.

The one thing I would like to change is that the user must click on
enable remote connections in the password dialog.  I would like to
default it to that.  We tried the unlock and nodeny options but seem to
confuse the command line parser.

So far, we have been very pleased with the results but we just
implemented it a couple of days ago.  Hope this helps - John

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Re: [X2go-dev] Desktop sharing

2010-03-24 Thread Heinz-M. Graesing
Hello List,

we are working on a nx-native Session-Shadowing/Desktop-Sharing feature which 
is almost ready for usage. But there are still some things that need to be 
done. I really hope you'll get the results soon. This feature will be available 
for all x2go installations (not only for LDAP + KControl + x2go sysrems). It is 
also planned to access the local, already running display and to let more than 
one person share your session.

Until "now" we too have used x11vnc.

best regards,

Heinz

--heinz-m. graesing--

-Ursprüngliche Nachricht-
Von: Peter Puk 
Gesendet: 22.03.2010 22:19:16
An: x2go-dev@lists.berlios.de
Betreff: [X2go-dev] Desktop sharing

>As described here: http://www.x2go.org/index.php?id=72
>Quote: "You may share their displays to help them or to discuss your 
>projects."
>
>How can i share a desktop, or as i understand:
>"login to an already running desktop, to support the current working user."
>
>In what way can i manage that. I'm already to access the "server" and 
>login to another user, but not take over an existing session.
>
>Ronnie
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Re: [X2go-dev] Desktop sharing

2010-05-13 Thread Heinz-M. Graesing
Hello Peter,

Am 22.03.2010 22:19, schrieb Peter Puk:
> As described here: http://www.x2go.org/index.php?id=72
> Quote: "You may share their displays to help them or to discuss your
> projects."
> 
> How can i share a desktop, or as i understand:
> "login to an already running desktop, to support the current working user."
> 
> In what way can i manage that. I'm already to access the "server" and
> login to another user, but not take over an existing session.

The Desktop sharing feature is a feature of the upcomming release
"baikal". Yes it will be possible to access a local, already running
Desktop session.

What is the status of the new release?

The main new features are:

* serverside xdmcp support
* a plugin for firefox
* https:// session data access
* desktop sharing

at the moment we don't have an public "experimental/unstable" repository
- sorry for that.
All items of the list are working now, but we still have issues with the
desktop sharing feature. We really hope to fix those bugs as fast as
possible. At the moment this would just not be working more than one time...

Sorry for the delay...

best regards,

Heinz
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Re: [X2go-dev] Desktop sharing

2010-05-15 Thread Jo-Erlend Schinstad
On 13 May 2010 16:35, Heinz-M. Graesing  wrote:
> The main new features are:
>
> * serverside xdmcp support
> * a plugin for firefox
> * https:// session data access
> * desktop sharing

Could you elaborate a bit on the Firefox plugin? Will it be something
like Nomachines NX Web Companion that enables you to download and
install a userspace NX client and use it directly from the web? Will
this plugin work on all platforms?

Thanks,

Jo-Erlend Schinstad
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Re: [X2go-dev] Desktop sharing

2010-05-16 Thread Heinz-M. Graesing
Hello Jo-Erlend,

Am 15.05.2010 14:45, schrieb Jo-Erlend Schinstad:

> Could you elaborate a bit on the Firefox plugin? Will it be something
> like Nomachines NX Web Companion that enables you to download and
> install a userspace NX client and use it directly from the web? Will
> this plugin work on all platforms?
> 

The x2goplugin is an firefox plugin and uses the xpi (firefox addon)
installation routine. It makes it possible to embedd x2go session into
websites itself or to show them outside the browser in an own window.
Sessions can be resized - even inside the website - for example inside a
resizeable 
It is executed in userspace. All components will be inside the
extensions directory. It will be listed as add on and can easily be removed.
It'll be available for windows 32 and linux 64 and 32 bit. I don't know
at the moment if the macOS version will be possible - maybe as a reduced
version (no pulseaudio, no website embedding,...)
The configuration can be delivered via the webserver (as an *.x2go file)
and every feature of x2go is supported (bidirectional audio, sshfs,
x2goprint,...).
We'll provide a *.js file which can ask the user to install the plugin.
As it is at the moment not possible to host the plugin (only add ons)on
the mozilla site, we'll make it accessible on our site.

I hope this will help - feel free to ask again.

best regards,

Heinz

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Re: [X2go-dev] Desktop sharing

2010-06-08 Thread Tobias Knipping
Hello Heinz,

is there any chance to have a look at the Firefox-Plugin?
Maybe as as beta?

Many Thanks for the great work!

Tobias


Am 16.05.2010 um 16:27 schrieb Heinz-M. Graesing:

> Hello Jo-Erlend,
> 
> Am 15.05.2010 14:45, schrieb Jo-Erlend Schinstad:
> 
>> Could you elaborate a bit on the Firefox plugin? Will it be something
>> like Nomachines NX Web Companion that enables you to download and
>> install a userspace NX client and use it directly from the web? Will
>> this plugin work on all platforms?
>> 
> 
> The x2goplugin is an firefox plugin and uses the xpi (firefox addon)
> installation routine. It makes it possible to embedd x2go session into
> websites itself or to show them outside the browser in an own window.
> Sessions can be resized - even inside the website - for example inside a
> resizeable 
> It is executed in userspace. All components will be inside the
> extensions directory. It will be listed as add on and can easily be removed.
> It'll be available for windows 32 and linux 64 and 32 bit. I don't know
> at the moment if the macOS version will be possible - maybe as a reduced
> version (no pulseaudio, no website embedding,...)
> The configuration can be delivered via the webserver (as an *.x2go file)
> and every feature of x2go is supported (bidirectional audio, sshfs,
> x2goprint,...).
> We'll provide a *.js file which can ask the user to install the plugin.
> As it is at the moment not possible to host the plugin (only add ons)on
> the mozilla site, we'll make it accessible on our site.
> 
> I hope this will help - feel free to ask again.
> 
> best regards,
> 
> Heinz
> 
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