Re: [X2Go-User] Clipboard copy paste keeps being unreliable for years now

[Walid MOGHRABI]

Hi,

+1

For what I can tell, this only happens with the Windows client, even the latest 
one.
I have never been able to reproduce it with the Linux client and I don't use 
the Mac client so I can't tell.

As someone already said, pretty hard to reproduce, don't happen very often but 
often enough to be annoying.


Regards,
Walid Moghrabi

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- Mail original - 

De: "Nigra Truo"  
À: x2go-user@lists.x2go.org 
Envoyé: Vendredi 10 Août 2018 03:21:24 
Objet: [X2Go-User] Clipboard copy paste keeps being unreliable for years now 






Hi, 

I have been using X2go with a Debian Server and Linux Debian and Windows 7 
clients for ages now. Most of the time it works flawlessly, but one thing that 
bugs the hell out of me is that copy paste via clipboard from Client to server 
does not work reliably. It works most of the time, but then it just fails, when 
I copy something, and paste in the target machine, nothing gets pasted. 

Now I want to troubleshoot and fix this once and for all. What causes this 
problem, why does copy paste fail sometimes? 

Thanks, 

Markus 






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Re: [X2Go-User] MATE screensaver is not activated when connected via x2go

[Walid MOGHRABI]

Great ! :D


Regards,
Walid Moghrabi

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- Mail original - 

De: "Mike Gabriel"  
À: "Jens Bürger"  
Cc: x2go-user@lists.x2go.org 
Envoyé: Mardi 3 Juillet 2018 15:29:34 
Objet: Re: [X2Go-User] MATE screensaver is not activated when connected via 
x2go 

Hi All, 

On Do 24 Mai 2018 08:48:07 CEST, Jens Bürger wrote: 

> Dear Walid, 
> 
>> Am 23.05.2018 um 17:08 schrieb Walid MOGHRABI : 
>> 
>> This is a known bug in mate and pretty hard to debug/fix apparently. 
>> 
>> There is a workaround anyway, you can create a small script that 
>> starts xautolock at user session start like this : 
> 
> […] 
> 
> Works great! Thanks a lot! 
> 
> Jens 

With next nxagent release Walid's work-around is obsolete. The issue 
has been addressed in nxagent upstream. 
https://github.com/ArcticaProject/nx-libs/pull/713 

Mike 
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Re: [X2Go-User] Accelerated graphics on headless server

[Walid MOGHRABI]

Hi,

I'm pretty curious on how you achieve that and make it work through X2Go anyway 
...


Regards,
Walid Moghrabi

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- Mail original - 

De: "Laurent Pouilloux"  
À: x2go-user@lists.x2go.org 
Envoyé: Vendredi 15 Juin 2018 11:46:42 
Objet: Re: [X2Go-User] Accelerated graphics on headless server 

Hi, 

indeed hardware acceleration is not supported through x2Go but you can 
install VirtualGL [1] to provides such feature on the remote machine and 
use the graphical card. 

Best regards, 

Laurent Pouilloux 

[1] https://www.virtualgl.org/ 

Le 15/06/2018 à 10:46, Walid MOGHRABI a écrit : 
> You can't. 
> Currently, accelerated graphics is not - or badly - supported through X2Go. 
> There is no such equivalent to RemoteFX with X2Go, not yet anyway. 
> 
> 
> Regards, 
> Walid Moghrabi 
> 
> TRAVAUX.COM 
> BAT I - PARC CEZANNE 2 290 AVENUE GALILEE - CS 80403 
> 13591 AIX EN PROVENCE CEDEX 3 
> 
> - Mail original - 
> 
> De: "Arjun Krishnan"  
> À: x2go-user@lists.x2go.org 
> Envoyé: Vendredi 15 Juin 2018 04:04:15 
> Objet: [X2Go-User] Accelerated graphics on headless server 
> 
> 
> 
> Hi 
> I'm sure this question has been asked many many times before, but I was 
> hoping one of you could quickly point me in the right direction. I have a 
> headless server, and I'm trying to write a file /etc/X11/xorg.conf.d/xxx.conf 
> , but this doesn't seem to be having any effect. Example 20-dummy.conf or 
> 20-intel.conf 
> I'd like hardware acceleration, the xrandr command, and kodi to work 
> remotely. Currently I get errors that look like this: $ xrandr 
> xrandr: Failed to get size of gamma for output default 
> Screen 0: minimum 320 x 240, current 1916 x 1029, maximum 1920 x 1200 
> default connected 1916x1029+0+0 0mm x 0mm 
> 1280x800 60.00 
> 320x240 60.00 
> 640x360 60.00 
> 640x480 60.00 
> 800x480 60.00 
> 800x600 60.00 
> 1024x600 60.00 
> 1024x768 60.00 
> 1152x864 60.00 
> 1280x720 60.00 
> 1280x1024 60.00 
> 1360x768 60.00 
> 1440x900 60.00 
> 1600x900 60.00 
> 1600x1200 60.00 
> 1680x1050 60.00 
> 1920x1080 60.00 
> 1920x1200 60.00 
> 1916x1029 60.00* 
> So it seems that x2go does not care about my xorg.conf files at all. Any 
> suggestions? 
> 
> 
> Arjun 
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Re: [X2Go-User] Accelerated graphics on headless server

[Walid MOGHRABI]

You can't.
Currently, accelerated graphics is not - or badly - supported through X2Go.
There is no such equivalent to RemoteFX with X2Go, not yet anyway.


Regards,
Walid Moghrabi

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- Mail original - 

De: "Arjun Krishnan"  
À: x2go-user@lists.x2go.org 
Envoyé: Vendredi 15 Juin 2018 04:04:15 
Objet: [X2Go-User] Accelerated graphics on headless server 



Hi 
I'm sure this question has been asked many many times before, but I was hoping 
one of you could quickly point me in the right direction. I have a headless 
server, and I'm trying to write a file /etc/X11/xorg.conf.d/xxx.conf , but this 
doesn't seem to be having any effect. Example 20-dummy.conf or 20-intel.conf 
I'd like hardware acceleration, the xrandr command, and kodi to work remotely. 
Currently I get errors that look like this: $ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 320 x 240, current 1916 x 1029, maximum 1920 x 1200
default connected 1916x1029+0+0 0mm x 0mm
1280x800  60.00  
320x240   60.00  
640x360   60.00  
640x480   60.00  
800x480   60.00  
800x600   60.00  
1024x600  60.00  
1024x768  60.00  
1152x864  60.00  
1280x720  60.00  
1280x1024 60.00  
1360x768  60.00  
1440x900  60.00  
1600x900  60.00  
1600x1200 60.00  
1680x1050 60.00  
1920x1080 60.00  
1920x1200 60.00  
1916x1029 60.00* 
So it seems that x2go does not care about my xorg.conf files at all. Any 
suggestions? 


Arjun 
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Re: [X2Go-User] Accelerated graphics on headless server

[Walid MOGHRABI]

You can't.
Currently, accelerated graphics is not - or badly - supported through X2Go.
There is no such equivalent to RemoteFX with X2Go, not yet anyway.

Regards,
Walid Moghrabi

TRAVAUX.COM
BAT I - PARC CEZANNE 2 290 AVENUE GALILEE - CS 80403
13591 AIX EN PROVENCE CEDEX 3

- Mail original - 

De: "Arjun Krishnan"  
À: x2go-user@lists.x2go.org 
Envoyé: Vendredi 15 Juin 2018 04:04:15 
Objet: [X2Go-User] Accelerated graphics on headless server 



Hi 
I'm sure this question has been asked many many times before, but I was hoping 
one of you could quickly point me in the right direction. I have a headless 
server, and I'm trying to write a file /etc/X11/xorg.conf.d/xxx.conf , but this 
doesn't seem to be having any effect. Example 20-dummy.conf or 20-intel.conf 
I'd like hardware acceleration, the xrandr command, and kodi to work remotely. 
Currently I get errors that look like this: $ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 320 x 240, current 1916 x 1029, maximum 1920 x 1200
default connected 1916x1029+0+0 0mm x 0mm
1280x800  60.00  
320x240   60.00  
640x360   60.00  
640x480   60.00  
800x480   60.00  
800x600   60.00  
1024x600  60.00  
1024x768  60.00  
1152x864  60.00  
1280x720  60.00  
1280x1024 60.00  
1360x768  60.00  
1440x900  60.00  
1600x900  60.00  
1600x1200 60.00  
1680x1050 60.00  
1920x1080 60.00  
1920x1200 60.00  
1916x1029 60.00* 
So it seems that x2go does not care about my xorg.conf files at all. Any 
suggestions? 


Arjun 
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Re: [X2Go-User] MATE screensaver is not activated when connected via x2go

[Walid MOGHRABI]

This is a known bug in mate and pretty hard to debug/fix apparently.

There is a workaround anyway, you can create a small script that starts 
xautolock at user session start like this :

#!/bin/bash
xautolock -time 5 -locker "mate-screensaver-command -l" -notifier "notify-send 
-t 2 'Your session will be locked in 20 secondes' 'click here to cancel'" 
-notify 20 &



You'll need these packages (for Ubuntu) : xautolock, libnotify-bin

Regards,
Walid Moghrabi

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- Mail original - 

De: "Jens Bürger" <jbuer...@arcor.de> 
À: x2go-user@lists.x2go.org 
Envoyé: Mardi 22 Mai 2018 23:17:19 
Objet: [X2Go-User] MATE screensaver is not activated when connected via x2go 

Hello all, 

I am working with a fresh X2Go install based on Debian 9. 
I recently discovered that the MATE screensaver is not activated when connected 
through X2Go. 
When I connect to the server locally, it works fine. 

Any suggestions? 

Kind regards, Jens 
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Re: [X2Go-User] Trouble terminating a kde session

[Walid MOGHRABI]

> Now, this was an interesting first test: running x2goterminate-session from a 
> console inside the x2go session resulted in a **instantly terminated 
> session** - no delays, no error dialogs. 

Well this was intended since this is the normal behaviour of 
x2goterminate-session.

Regards,
Walid Moghrabi

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- Mail original - 

De: "Joao Roscoe" <joao.ros...@gmail.com> 
À: x2go-user@lists.x2go.org 
Envoyé: Jeudi 17 Mai 2018 14:19:22 
Objet: Re: [X2Go-User] Trouble terminating a kde session 


Now, this was an interesting first test: running x2goterminate-session from a 
console inside the x2go session resulted in a **instantly terminated session** 
- no delays, no error dialogs. 
Also, I've just installed kdebugsettings, but couldn't still to figure out how 
to use it. 


Regards, 
Joao 





On Wed, May 16, 2018 at 6:29 PM, Stefan Baur < x2go-m...@baur-itcs.de > wrote: 


Am 16.05.2018 um 23:20 schrieb Joao Roscoe: 

> With kde5, however, I'm running into an issue at logout: right after 
> clicking the logout button, the display into the session window goes 
> black, and a few seconds later, it shows a dialog stating that ksmserver 
> segfaulted. Clicking "Close" results a briefly displayed second, similar 
> dialog stating the same about drkonqi, and then, after closing that, 
> yes, the session terminates. 

Just as an idea on how to narrow down the cause: You could try running 
the command "x2goterminate-session" from inside the X2Go KDE5 session 
window, and see if that also triggers the segfault, or if it leads to a 
clean logout. 

Kind Regards, 
Stefan Baur 

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Re: [X2Go-User] Problems with java GUI application

[Walid MOGHRABI]

Try adding these options to your JVM args :

-Dsun.java2d.opengl=false
-Dsun.java2d.xrender=true


Regards,
Walid Moghrabi

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- Mail original - 

De: "Kevin Kremer" <kkmailingli...@gmail.com> 
À: "Walid MOGHRABI" <w.moghr...@servicemagic.eu>, "Ulrich Sibiller" 
<ul...@gmx.de> 
Cc: "x2go users" <x2go-user@lists.x2go.org> 
Envoyé: Mercredi 16 Mai 2018 21:06:20 
Objet: Re: [X2Go-User] Problems with java GUI application 

Thanks all for your answers. 

>You should definitely use open-jdk instead of Oracle jdk 
I tried running OpenJDK but the java application seems to start 
only when using Oracle Java. I checked the developer's 
documentation which states Oracle Java as a requirement. 

> Try with JOSM https://josm.openstreetmap.de/ 
I tested https://josm.openstreetmap.de/ which runs without any 
problems. 

> Are you using the most current version of nx-libs (3.5.99-16)? 
> What's the name of the app? Is it using OpenGL? And have you 
> tried OpenJDK instead of Oracle's java? 
We bought this application (called heimbas) for accounting and 
documentation. I will try to contact the developers again, even 
though I fear they will just refer to the RDP connection on our 
old windows machine where the app is running fine. 
As far as I know, it does not use any additional libs like OpenGL. 
Can you tell me how to check the version of nx-libs? I simply 
installed x2goserver and x2goserver-xsession which apparently do 
not install an additional nx-libs package (apt policy nx-libs does 
not know the package). 

Best regards, 
Kevin 


On 16 May 2018 15:14, Walid MOGHRABI <w.moghr...@servicemagic.eu> 
wrote: 

>You should definitely use open-jdk instead of Oracle jdk ... I had many issues 
>with Java applications under X2Go (especially unexpected crashes) until I went 
>back to openjdk ... can't explain why but openjdk is A LOT more stable under 
>x2go and not that slower. 
> 
>Regards, 
>Walid Moghrabi 
> 
>TRAVAUX.COM 
>BAT I - PARC CEZANNE 2 290 AVENUE GALILEE - CS 80403 
>13591 AIX EN PROVENCE CEDEX 3 
> 
>- Mail original - 
> 
>De: "Ulrich Sibiller" <ul...@gmx.de> 
>À: "Kevin Kremer" <kkmailingli...@gmail.com> 
>Cc: "x2go users" <x2go-user@lists.x2go.org> 
>Envoyé: Mercredi 16 Mai 2018 09:28:11 
>Objet: Re: [X2Go-User] Problems with java GUI application 
> 
>On Wed, May 16, 2018 at 9:16 AM, Kevin Kremer <kkmailingli...@gmail.com> 
>wrote: 
>> Hi all, 
>> 
>> I set up an X2Go server to connect to a remote machine and most 
>> applications run very well. Unfortunately I rely on one java 
>> application where some of its GUI components suffers huge 
>> latencies. Here, actions like a click on a button take up to 10 
>> seconds to perform while there is no delay when running the 
>> application without X2Go. 
>> The latencies can be reduced to 4 seconds by reducing the 
>> connection speed to "MODEM" and the image quality to 0. However, 
>> the latency is still huge compared to running the application 
>> locally. 
>> 
>> Furthermore, the java application does not re-print its window and 
>> it stays blank when minimizing the X2Go window. 
>> 
>> My setup: 
>> I use Xfce as a desktop, the connection speed is set to "MODEM", 
>> the compression algorithm is set to 16m-jpeg, the image quality 
>> is set to 0 and I use Oracle's JRE 1.8.0_152. The problems also occur 
>> when I connect to the host within the same LAN. 
>> 
>> Maybe someone has encountered similar problem and can give me a 
>> few hints for solving them. 
> 
>Are you using the most current version of nx-libs (3.5.99-16)? What's 
>the name of the app? Is it using OpenGL? And have you tried OpenJDK 
>instead of Oracle's java? 
> 
>Uli 
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Re: [X2Go-User] Problems with java GUI application

[Walid MOGHRABI]

You should definitely use open-jdk instead of Oracle jdk ... I had many issues 
with Java applications under X2Go (especially unexpected crashes) until I went 
back to openjdk ... can't explain why but openjdk is A LOT more stable under 
x2go and not that slower.

Regards,
Walid Moghrabi

TRAVAUX.COM
BAT I - PARC CEZANNE 2 290 AVENUE GALILEE - CS 80403
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- Mail original - 

De: "Ulrich Sibiller" <ul...@gmx.de> 
À: "Kevin Kremer" <kkmailingli...@gmail.com> 
Cc: "x2go users" <x2go-user@lists.x2go.org> 
Envoyé: Mercredi 16 Mai 2018 09:28:11 
Objet: Re: [X2Go-User] Problems with java GUI application 

On Wed, May 16, 2018 at 9:16 AM, Kevin Kremer <kkmailingli...@gmail.com> wrote: 
> Hi all, 
> 
> I set up an X2Go server to connect to a remote machine and most 
> applications run very well. Unfortunately I rely on one java 
> application where some of its GUI components suffers huge 
> latencies. Here, actions like a click on a button take up to 10 
> seconds to perform while there is no delay when running the 
> application without X2Go. 
> The latencies can be reduced to 4 seconds by reducing the 
> connection speed to "MODEM" and the image quality to 0. However, 
> the latency is still huge compared to running the application 
> locally. 
> 
> Furthermore, the java application does not re-print its window and 
> it stays blank when minimizing the X2Go window. 
> 
> My setup: 
> I use Xfce as a desktop, the connection speed is set to "MODEM", 
> the compression algorithm is set to 16m-jpeg, the image quality 
> is set to 0 and I use Oracle's JRE 1.8.0_152. The problems also occur 
> when I connect to the host within the same LAN. 
> 
> Maybe someone has encountered similar problem and can give me a 
> few hints for solving them. 

Are you using the most current version of nx-libs (3.5.99-16)? What's 
the name of the app? Is it using OpenGL? And have you tried OpenJDK 
instead of Oracle's java? 

Uli 
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Re: [X2Go-User] Load Balancers

[Walid MOGHRABI]

I had many troubles making broker with agent-query-mode=SSH and loadchecker 
recently ... there were still a few bugs which make those not working reliably 
or not working at all.
I would definitely recommend that you're up to date with the x2gobroker and all 
broker packages, mine is 0.0.4.0-0~1022 and there were many fixes very recently.
It will depends on your needs but if you want simple load balancing without 
load checking (aka "roud robin distribution") which is fine for most needs, you 
can perfectly use agent-query-mode=LOCAL which works fine.

If you use agent-query-mode=SSH, you need to have loadchecker working 
otherwise, you'll encounter problems with SSH query mode as soon as you have 
unavailable remote servers.

By the way, for loadchecker (and broker in fact) to work properly, you need to 
deploy the broker SSH key onto the remote servers, there is a 
"x2gobroker-pubkeyauthorizer" script for that.
I think this is your main problem looking at your logs.

You also should use the --add-to-known-hosts options for your x2goclient.


Regards,
Walid Moghrabi

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- Mail original - 

De: "Roger Robinson" <roger.robin...@rms.com> 
À: x2go-user@lists.x2go.org 
Envoyé: Mardi 8 Mai 2018 15:41:06 
Objet: [X2Go-User] Load Balancers 



Hi, 

I almost have an x2go session broker set up but I cant get the load balancer to 
work. 
I have set 
Default-agent-query-mode=SSH 
In x2gobroker.conf 

I have followed the keygen commands here -> 
https://wiki.x2go.org/doku.php/wiki:advanced:x2gobroker:loadbalancing 

And have some keys in 
/var/lib/x2gobroker/.ssh/ 



root@ukvmlx-ldap-01 ~]# x2gobroker-loadchecker 
/usr/lib/python2.7/site-packages/paramiko/client.py:682: UserWarning: Unknown 
ssh-rsa host key for 10.5.17.117: 48dc26733e7c1d6f7d1cdb391ce47ccd 
(key.get_name(), hostname, hexlify(key.get_fingerprint( 
/usr/lib/python2.7/site-packages/paramiko/client.py:682: UserWarning: Unknown 
ssh-rsa host key for 10.5.17.116: 48dc26733e7c1d6f7d1cdb391ce47ccd 
(key.get_name(), hostname, hexlify(key.get_fingerprint( 
/usr/lib/python2.7/site-packages/paramiko/client.py:682: UserWarning: Unknown 
ssh-rsa host key for 10.5.17.115: 48dc26733e7c1d6f7d1cdb391ce47ccd 
(key.get_name(), hostname, hexlify(key.get_fingerprint( 


2018-05-08 14:39:39,200 - loadchecker - INFO - X2Go Session Broker (0.0.3.4), 
written by Mike Gabriel (X2Go Project) <mike.gabr...@das-netzwerkteam.de> 
2018-05-08 14:39:39,200 - loadchecker - INFO - Setting up the Load Checker 
service's environment... 
2018-05-08 14:39:39,200 - loadchecker - INFO - X2GOBROKER_DEBUG: True 
2018-05-08 14:39:39,200 - loadchecker - INFO - X2GOBROKER_LOADCHECKER_SOCKET: 
/run/x2gobroker/x2gobroker-loadchecker.socket 
2018-05-08 14:39:39,202 - loadchecker - DEBUG - LoadChecker.loadchecker(): load 
checker thread waking up... 
2018-05-08 14:39:39,294 - loadchecker - DEBUG - LoadChecker.loadchecker(): 
backend=inifile -> processing profiles: [u'pool-KDE-RMS', u'pool-GNOME-RMS'] 
2018-05-08 14:39:39,298 - loadchecker - DEBUG - LoadChecker.loadchecker(): 
querying remote agents for backend=inifile, profile_id=pool-KDE-RMS: 
[{u'hostaddr': '10.5.17.117', u'hostname': 'ukvmlx-head-03', u'port': 22}, 
{u'hostaddr': '10.5.17.116', u'hostname': 'ukvmlx-head-02', u'port': 22}, 
{u'hostaddr': '10.5.17.115', u'hostname': 'ukvmlx-head-01', u'port': 22}] 
/usr/lib/python2.7/site-packages/paramiko/client.py:682: UserWarning: Unknown 
ssh-rsa host key for 10.5.17.117: 48dc26733e7c1d6f7d1cdb391ce47ccd 
(key.get_name(), hostname, hexlify(key.get_fingerprint( 
2018-05-08 14:39:39,532 - loadchecker - ERROR - querying remote agent on host 
ukvmlx-head-03 failed: Authentication to remote X2Go Broker Agent Host failed 
(user: x2gobroker, hostname: 10.5.17.117, host address: 10.5.17.117, port: 22) 
failed 
2018-05-08 14:39:39,647 - loadchecker - INFO - LoadChecker.loadchecker(): 
contacted remote broker agent for backend=inifile, profile_id=pool-KDE-RMS, 
hostname=ukvmlx-head-03, new load factor is: HOST-UNREACHABLE 
/usr/lib/python2.7/site-packages/paramiko/client.py:682: UserWarning: Unknown 
ssh-rsa host key for 10.5.17.116: 48dc26733e7c1d6f7d1cdb391ce47ccd 
(key.get_name(), hostname, hexlify(key.get_fingerprint( 
2018-05-08 14:39:39,869 - loadchecker - ERROR - querying remote agent on host 
ukvmlx-head-02 failed: Authentication to remote X2Go Broker Agent Host failed 
(user: x2gobroker, hostname: 10.5.17.116, host address: 10.5.17.116, port: 22) 
failed 
2018-05-08 14:39:39,984 - loadchecker - INFO - LoadChecker.loadchecker(): 
contacted remote broker agent for backend=inifile, profile_id=pool-KDE-RMS, 
hostname=ukvmlx-head-02, new load factor is: HOST-UNREACHABLE 
/usr/lib/python2.7/site-packages/paramiko/client.py:682: UserWarning: Unknown 
ssh-rsa host key for 10.5.17.115: 48dc26733e7c1d6f7d1cdb391ce47ccd 
(key.g

Re: [X2Go-User] X2GO cli

[Walid MOGHRABI]

Here is an example, feel free to adapt :



[DEFAULT]
speed=4
pack=64k-jpeg
quality=9
fstunnel=false
export=
iconvto=UTF-8
iconvfrom=ISO8859-1
useiconv=false
dpi=96
setdpi=96
xinerama=true
usekbd=true
type=auto
sound=true
soundsystem=pulse
startsoundsystem=true
soundtunnel=true
defsndport=true
sndport=4713
print=false
icon=:/img/icons/128x128/x2gosession.png
autologin=false
autologoff=true
published=false
command=MATE


[PROD]
fullscreen=true
clipboard=none
name=PROD
host=x2go-server-prod (10.0.0.1)


[BETA]
fullscreen=true
clipboard=none
name=BETA
host=x2go-server-beta (10.0.0.2)


[PROD-LOWBW]
speed=2
pack=32k-jpeg
fullscreen=false
clipboard=both
width=1440
height=900
name=PROD-LOWBW
host=x2go-server-prod (10.0.0.1)


[BETA-LOWBW]
speed=2
pack=32k-jpeg
fullscreen=false
clipboard=both
width=1440
height=900
name=BETA-LOWBW
host=x2go-server-beta (10.0.0.2)


==

Regards,
Walid Moghrabi

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- Mail original - 

De: "Zelda L" <zeldal66...@gmail.com> 
À: "brian mullan" <bmullan.m...@gmail.com> 
Cc: x2go-user@lists.x2go.org 
Envoyé: Mercredi 9 Mai 2018 15:12:22 
Objet: Re: [X2Go-User] X2GO cli 


Thank you very much for answers. I dont have C:\\users\\.x2goclient\ 
folder but i have c:\users\zelda\.x2go I have checked all files in this folder 
and there seems nothing usable, I just found 
S-zelda-50-1525868465_stDLXDE_dp32\session file and it looks like: 


Loop: WARNING! Unrecognized session type 'unix-kde-depth_32'. Assuming agent 
session. 
Auth: WARNING! Failed to read data from the X auth command. 
Auth: WARNING! Generating a fake cookie for X authentication. 
Loop: WARNING! Could not retrieve the X server authentication cookie. 


BTW i found my session details in registry. 
\HKEY_CURRENT_USER\Software\Obviously Nice\x2goclient\sessions\ . I am trying 
to make x2go client portable and connect to server with one click for some guys 
(with same batch file etc..) . Could you suggest me sth how to do this like: 
create and use session ini file for this if possible? 


Thanks again, 
Best Regards, 
Zelda 


On Wed, May 9, 2018 at 1:41 PM, brian mullan < bmullan.m...@gmail.com > wrote: 



On Linux for cli use you have 2 choices 


Install pyhoca-cli or use the x2goclient 




On Wed, May 9, 2018, 3:20 AM Alain Aupeix < alain.aup...@wanadoo.fr > wrote: 






Le 08/05/2018 à 23:44, Zelda L a écrit : 



Hello everyone, 


I have installed x2go server. Is there any way to connect from cli without 
creating a session with gui from windows client? 

I have a similar question about how to connect without using gui with a command 
line, but from linux. 





Thanks for great project, 

+1 

A+ 
-- 

Alain Aupeix 
http://jujuland.pagesperso-orange.fr/ 
http://pissobi-lacassagne.pagesperso-orange.fr/ 

U.buntu 12.04 & Xu.buntu 16.04 | G.ramps 3.4.9-1 | H.arbour 3.2.0dev 
(2018-03-016 17:10) | Hw.Gui (2642) 
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Re: [X2Go-User] X2GO cli

[Walid MOGHRABI]

Easiest method would be to use the client GUI at least once to create your 
session settings (it will create a $HOME/.x2goclient/sessions file on Linux, 
C:\\users\\.x2goclient\sessions on Windows) and then, from cli, just use :

x2goclient --session=

You can use the --session-conf to set another location for your sessions file.
The sessions file is just a .ini style text file you can edit manually.


Regards,
Walid Moghrabi

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- Mail original - 

De: "Alain Aupeix" <alain.aup...@wanadoo.fr> 
À: "Zelda L" <zeldal66...@gmail.com>, x2go-user@lists.x2go.org 
Envoyé: Mercredi 9 Mai 2018 09:17:34 
Objet: Re: [X2Go-User] X2GO cli 


Le 08/05/2018 à 23:44, Zelda L a écrit : 



Hello everyone, 


I have installed x2go server. Is there any way to connect from cli without 
creating a session with gui from windows client? 

I have a similar question about how to connect without using gui with a command 
line, but from linux. 





Thanks for great project, 

+1 

A+ 
-- 

Alain Aupeix 
http://jujuland.pagesperso-orange.fr/ 
http://pissobi-lacassagne.pagesperso-orange.fr/ 

U.buntu 12.04 & Xu.buntu 16.04 | G.ramps 3.4.9-1 | H.arbour 3.2.0dev 
(2018-03-016 17:10) | Hw.Gui (2642) 

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Re: [X2Go-User] X2go client version

[Walid MOGHRABI]

Anyway, this is not a bad idea ...
Would be nice to have such information when, like us, you have dozens of users 
connected to x2goservers using fat client and not TCE.


Regards,
Walid Moghrabi

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- Mail original - 

De: "Mihai Moldovan" <io...@ionic.de> 
À: "Mario Brese" <mbr...@4t2.com>, x2go-user@lists.x2go.org 
Envoyé: Mercredi 2 Mai 2018 20:28:33 
Objet: Re: [X2Go-User] X2go client version 

* On 04/27/2018 12:30 PM, Mario Brese wrote: 
> is there any way to see the client version who is connected, on the server? 

There's not. This information is not exposed anywhere, and, for what it's 
worth, 
never queried by X2Go Server since it's not needed. 


OT: please don't thread-hijack the next time. 



Mihai 


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Re: [X2Go-User] Best Linux Distro for x2go server sessions as of April 2018?

[Walid MOGHRABI]

Running X2Go with Ubuntu 16.04 LTS + MATE (1.12 in the base repo, tested 1.16 
thanks to the MATE DEV ppa and working great too).

I'm pretty happy with this setup.

I also tried Ubuntu 16.04 + XFCE (4.12 from base repo) and working great too.

Regards,
Walid Moghrabi

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- Mail original - 

De: "John Stoffel" <j...@stoffel.org> 
À: x2go-user@lists.x2go.org 
Envoyé: Samedi 14 Avril 2018 03:58:30 
Objet: [X2Go-User] Best Linux Distro for x2go server sessions as of April 2018? 


Guys, 

So what's the best linux distro to run x2go on these days, in terms of 
the server, the system you connect to? Which would people recommend? 

RHEL 7.x is out, as are probably a bunch of the newer Gnome 3 
desktops. Does anything running MATE work well? Running Debian 9.3 
with lxde seems to work pretty well, using client 4.1.1.1 to connect. 

But at my $WORK, where we're mostly RHEL/CentOS based, it looks like 
sticking with CentOS 6.9 is the best solution currently. Which kinda 
stinks. Does Fedora work better or at least just as well when running 
the Mate desktop? 

John 

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Re: [X2Go-User] X2Go crashes when I run Thunderbird

[Walid MOGHRABI]

Anyway, disabling BIG-REQUESTS has some drawbacks ... and advantages.
Good point : it make some applications now work out of the box (VSCode, ATOM 
editor, ...)
Bad point : some other apps won't start (VLC)

Now make your choice !

Any idea on if and when BIG-REQUESTS will be fixed one day ?


Regards,
Walid Moghrabi

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- Mail original - 

De: "Ulrich Sibiller" <ulrich.sibil...@gmail.com> 
À: "Tristan Miller" <psychon...@nothingisreal.com> 
Cc: "x2go users" <x2go-user@lists.x2go.org> 
Envoyé: Jeudi 5 Avril 2018 16:11:42 
Objet: Re: [X2Go-User] X2Go crashes when I run Thunderbird 


It's a problem in nx. And for that reason it is disabled in current x2go 
packages. 


Uli 


Tristan Miller < psychon...@nothingisreal.com > schrieb am Do., 5. Apr. 2018, 
15:41: 


Greetings. 

On Mon, 19 Mar 2018 16:07:14 +0100, Stefan Baur 
< x2go-m...@baur-itcs.de > wrote: 
> Am 26.02.2018 um 17:27 schrieb Tristan Miller: 
> > Dear all, 
> > 
> > On Wed, 21 Feb 2018 16:23:32 +0100, Tristan Miller 
> > < psychon...@nothingisreal.com > wrote: 
> >> Lately whenever I try to run Thunderbird through X2Go, the session 
> >> suddenly closes. The session doesn't get suspended, since when I 
> >> reconnect I need to create a new session rather than resuming the 
> >> old one. I assume that the server is crashing or otherwise 
> >> failing, since the client remains open. 
> > Problem seems to happen with many other GTK+ applications as well, 
> > including GEdit and Evince. Is no one else experiencing this? 
> 
> Last time I had such an issue with evince and thunderbird, it could be 
> fixed by adding the following line to /etc/x2go/x2goagent.options: 
> 
> X2GO_NXAGENT_DEFAULT_OPTIONS+=" -extension BIG-REQUESTS" 
> 
> Please check if this line is present on the server, if not, add it and 
> try again. 

Confirmed, adding this line to /etc/x2go/x2goagent.options fixes the 
problem. 

Is this a problem with X2Go itself? Or perhaps with my GNU/Linux 
distribution? (I can report it downstream and suggest that they add 
this line to x2goagent.options.) 

Regards, 
Tristan 

-- 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- 
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https://logological.org/ 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- 
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Re: [X2Go-User] Some questions about X2go

[Walid MOGHRABI]

Hi,

Do you really need desktop sharing (aka "see what you see on your opened local 
session on your remote computer") or do you just need to open a session on the 
remote machine the Windows RDP way (contrary to the TeamViewer/VNC way) ?
If so, you'll get far better performances and comfort opening a "MATE" session 
instead of a "Local desktop" session from your X2Go client.

Regards,
Walid Moghrabi

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- Mail original - 

De: "Torsten Kupke" <tkans...@t-online.de> 
À: x2go-user@lists.x2go.org 
Envoyé: Mercredi 14 Mars 2018 18:24:37 
Objet: [X2Go-User] Some questions about X2go 


Hi all, 
on my working PC there is running Ubuntu 16.04 with MATE Desktop (isn't the 
same as Ubuntu MATE, right?) and a X2go Server with Desktop Sharing extension. 
On my home PC with Windows 10 I have installed the X2go Client and inside it 
configured a session connecting to the Ubuntu host according to 
https://wiki.x2go.org/doku.php/doc:usage:desktop-sharing . The connection is 
successful, but there are some issues: 


1. The Ubuntu host's desktop is spread over two 4/3 screens. But The 
Windows PC only has one screen with 1680x1050 Pixels. So the display from the 
Ubuntu host is highly horizontally compressed, so that the texts are nearly 
unreadable. OK, this behaviour is documented, but is there a way to get it more 
readable? 
2. If I (to solve the above issue) switch to something other than full 
screen mode in the session settings, the session crashes, when started. I have 
to close and restart the X2go Client. And then with settings set back to full 
screen mode the session runs again. Is there a way to avoid the crash without 
full screen mode? 
3. In full screen mode I cannot see any mouse cursor. So hitting any user 
elements inside or on the windows inside the display from the Ubuntu host is 
very difficult, since they are reduced to half the width. Is there a way to see 
a mouse cursor? Or is this due to the compressed display? 
4. Since mouse using is so difficult, I tried to close the windows from the 
Ubuntu host by pressing . But then I get a question from X2go to close 
the session. Is there a way to propagate key combinitions like  to the 
remote host? 

Sincerely 
tkansgar 

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Re: [X2Go-User] multimedia not running in the client

[Walid MOGHRABI]

Which player are you using ?

With VLC or Parole, I had to force X11 rendering and not XV or opengl but it 
works, it's just not h/w accelerated.


Regards,
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- Mail original - 

De: "Zenny" <garbytr...@gmail.com> 
À: x2go-user@lists.x2go.org 
Envoyé: Vendredi 9 Février 2018 13:28:33 
Objet: [X2Go-User] multimedia not running in the client 



Hi, 

I am having problem to get multimedia played in an x2goclient or pyhoca-gui 
instance. The server is ubuntu 16.04 xenial and the client is running in debian 
8 jessie. Says glx1.3+ needed. 


Both the server and the client have latest mesa-utils with glx v. 1.4, yet when 
I run 'glxinfo | grep -i version' via x2go clients, it reported server glx 
version 1.2 ! The outputs are reported below verbatim 


SERVER 
x2goserver-ubuntu-16.04): $ glxinfo | grep -i version 

server glx version string: 1.4 
client glx version string: 1.4 
GLX version: 1.4 
Version: 18.1.0 
Max core profile version: 3.3 
Max compat profile version: 3.0 
Max GLES1 profile version: 1.1 
Max GLES[23] profile version: 3.0 
OpenGL core profile version string: 3.3 (Core Profile) Mesa 18.1.0-devel 
OpenGL core profile shading language version string: 3.30 
OpenGL version string: 3.0 Mesa 18.1.0-devel 
OpenGL shading language version string: 1.30 
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 18.1.0-devel 
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00 


CLIENT 
x2goclient-debian-8-jessie: $ glxinfo | grep -i version 
server glx version string: 1.4 
client glx version string: 1.4 
GLX version: 1.4 
OpenGL core profile version string: 3.3 (Core Profile) Mesa 13.0.6 
OpenGL core profile shading language version string: 3.30 
OpenGL version string: 3.0 Mesa 13.0.6 
OpenGL shading language version string: 1.30 
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 13.0.6 
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00 


INSIDE X2GO SESSION 
x2goclient-ruuning-inside-debian-8-jessie: $ glxinfo | grep -i version 

server glx version string: 1.2 
client glx version string: 1.4 
GLX version: 1.2 
Version: 18.1.0 
Max core profile version: 3.3 
Max compat profile version: 3.0 
Max GLES1 profile version: 1.1 
Max GLES[23] profile version: 3.0 
OpenGL version string: 3.0 Mesa 18.1.0-devel 
OpenGL shading language version string: 1.30 



-- 





Cheers, 
/z 




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Re: [X2Go-User] TCE-live build

[Walid MOGHRABI]

I would add that it fails miserabily under Ubuntu 16.04 ... Live Build scripts 
seem completely broken on Ubuntu.


Regards,
Walid Moghrabi

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- Mail original - 

De: "Stefan Baur" <x2go-m...@baur-itcs.de> 
À: x2go-user@lists.x2go.org, "Seth Galitzer" <sg...@ksu.edu> 
Envoyé: Mardi 12 Décembre 2017 15:29:13 
Objet: Re: [X2Go-User] TCE-live build 

Am 08.12.2017 um 21:32 schrieb Seth Galitzer: 
> That does make sense, now that you mention it. :) I wouldn't have 
> thought that live-build would change all that much, but what do I know? 
> Thanks for clarifying. Let me know if I can help with testing. 
I had a chance to set up a stretch system today and try live-build on it. 
It fails just as Widu described it, when you select a netboot image. It 
will build iso-hybrid images just fine. 

The underlying issues are two: 

1) In jessie, live-build picks a sane default - I'm guessing syslinux - 
for all image types, when you don't specify one using the parameter 
--bootloader. In stretch, however, it picks grub-efi for netboot, even 
though it knows that it won't work. 

2) In jessie, the parameter is named --bootloader, in stretch, it is 
named --bootloaders (plural). 

An updated build script that should hopefully fix this is now in the Wiki. 
(Changes are in 
<https://wiki.x2go.org/doku.php/doc:howto:tce#configuring_the_build> and 
<https://wiki.x2go.org/doku.php/doc:howto:tce#starting_the_build>) 

Kind Regards, 
Stefan Baur 
PS: Widu, you're the second bicycle shop from Freiburg that's tinkering 
with X2Go-TCE - do you know the other one? 
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Re: [X2Go-User] newbie question multiple monitors

[Walid MOGHRABI]

This is because you're using the "Local desktop" mode which  is, in fact, only 
a VNC connection on top of your local opened session on your workstation.
This is not the best way  to use X2Go bcause :
* it works badly with multiple monitors
* it is slow and not very usable
* it needs that your local session is active and logged in

X2Go is a remote desktop on top of X server remoting.
This is NOT a tool that is used for remote access the way you can do with 
TeamViewer or VNC (even though there is such mode with the "Local Desktop" 
session).
The "normal" way of using X2Go is with remote session through X server.
But for that, you need a supported Desktop Environnement (DE) and currently 
some "modern desktops" are not or badly such as Gnome3, Unity or KDE Plasma.

MATE, XFCE, LXDE and some others works well but this will NOT let you resume an 
already opened local session, it will open a new session as if you were 
switching between local users on a workstation.
You won't be able to resume your opened apps for example.

In fact, X2Go is basically suited for thin clients, yon don't even need to have 
a graphical local desktop or a GPU on the server side since the desktop is 
virtual.


Regards,
Walid Moghrabi

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- Mail original - 

De: "Thomas Porschberg" <tho...@randspringer.de> 
À: x2go-user@lists.x2go.org 
Envoyé: Mercredi 1 Novembre 2017 11:40:00 
Objet: [X2Go-User] newbie question multiple monitors 

Hi, 

I installed the server part on my Ubuntu 16.04 PC with two monitors (THis is my 
workstation I work with every day). 

$ps -ef | grep x2go 
root 17045 1 0 11:06 ? 00:00:00 /usr/bin/perl /usr/sbin/x2gocleansessions 
pberg 20099 7153 0 11:11 ? 00:00:00 /usr/bin/x2godesktopsharing 

My client is a laptop, also running Ubuntu 16.04. 

When I create a new session I see on my laptop both physical monitors from the 
server, 
divided vertically and of course blurred. 

This is not usable. Can I somehow the client configure in way that I can switch 
between the two physical monitors from the server? 

Best regards 
Thomas 
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Re: [X2Go-User] ssh-keygen.exe loads the processor every time the client starts

[Walid MOGHRABI]

> I haven't tested it myself yet, but some devs suggested that slow 
> session startup (as opposed to slow booting to login screen) may be 
> caused by homedirs stored on NFS. 
> Might be worth adding a test account that has a homedir "native" to the 
> server, and if that brings a significant speed increase, trying out 
> other networked filesystems like glusterfs. 

Might be possible, NFS migh probably add a few latency but I wouldn't recommend 
using GlusterFS instead, it is far slower due to the voulme beeing mounted 
through Fuse.
I already did many testing on GlusterFS for our internal usage and it is by far 
slower than NFS.
CephFS (file sharing "nfs like" filesystem provided by Ceph on top of it's 
storage capabilities, as opposed to the "usual" block mode it provides) could 
be worth trying but I didn't had the opportunity to do some testing by now.
Anyway, I think it should be at most comparable to NFS, not really faster.

Regards,
Walid Moghrabi

TRAVAUX.COM
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- Mail original - 

De: "Stefan Baur" <x2go-m...@baur-itcs.de> 
À: "Walid MOGHRABI" <w.moghr...@servicemagic.eu> 
Cc: x2go-user@lists.x2go.org 
Envoyé: Vendredi 6 Octobre 2017 13:33:43 
Objet: Re: [X2Go-User] ssh-keygen.exe loads the processor every time the client 
starts 

Am 06.10.2017 um 13:29 schrieb Walid MOGHRABI: 
> I agree especially in the case of the TCE where we're targeting ThinClients 
> that are generaly quite low on specs (mostly ATOM or celeron based). 
> Anyway,time to open the session is a bit too slow to my taste, I would agree 
> but this is not unbearable. 
> RDP on the other hand is extremely fast at opening the session but if I 
> remember well, it uses a secured channel with encryption (but not through 
> SSH) so, what are they using to connect that fast without compromising 
> security too much ? 
> 
> On the other hand, I have a problem with the client beeing very slow to quit 
> but this is another subject, I'll fill a bug report for that later. 

I haven't tested it myself yet, but some devs suggested that slow 
session startup (as opposed to slow booting to login screen) may be 
caused by homedirs stored on NFS. 
Might be worth adding a test account that has a homedir "native" to the 
server, and if that brings a significant speed increase, trying out 
other networked filesystems like glusterfs. 

Kind Regards, 
Stefan Baur 

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Re: [X2Go-User] ssh-keygen.exe loads the processor every time the client starts

[Walid MOGHRABI]

I agree especially in the case of the TCE where we're targeting ThinClients 
that are generaly quite low on specs (mostly ATOM or celeron based).
Anyway,time to open the session is a bit too slow to my taste, I would agree 
but this is not unbearable.
RDP on the other hand is extremely fast at opening the session but if I 
remember well, it uses a secured channel with encryption (but not through SSH) 
so, what are they using to connect that fast without compromising security too 
much ?

On the other hand, I have a problem with the client beeing very slow to quit 
but this is another subject, I'll fill a bug report for that later.


Regards,
Walid Moghrabi

TRAVAUX.COM
BAT I - PARC CEZANNE 2 290 AVENUE GALILEE - CS 80403
13591 AIX EN PROVENCE CEDEX 3

- Mail original - 

De: "Stefan Baur" <x2go-m...@baur-itcs.de> 
À: x2go-user@lists.x2go.org 
Envoyé: Vendredi 6 Octobre 2017 12:24:45 
Objet: Re: [X2Go-User] ssh-keygen.exe loads the processor every time the client 
starts 

Robert, 

Please do not mock other users just because they have what you consider 
inferior hardware. 
Some people are stuck with old hardware for whatever reason, and there 
are many reasons that qualify as valid. 

Kind Regards, 
Stefan Baur 
X2Go Project/Community Manager 

Am 06.10.2017 um 11:13 schrieb Robert Dinse: 
> 
> Your laptop is slower than my 12 year old computer? Running 
> Windows 3.11 
> per chance? 
> 
> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
>  
> 
> Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. 
> Knowledgeable human assistance, not telephone trees or script readers. 
> See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874. 
> 
> On Fri, 6 Oct 2017, Max A. wrote: 
> 
>> Date: Fri, 6 Oct 2017 12:06:09 +0300 
>> From: Max A. <lith...@mail.ru> 
>> Cc: x2go users <x2go-user@lists.x2go.org> 
>> Subject: Re: [X2Go-User] ssh-keygen.exe loads the processor every time 
>> the 
>> client starts 
>> 
>> on my old laptop the connection takes at least 15 seconds, I would be 
>> glad if it happens faster 
>> 
>> 
>>> 
>>> Ok, in any case, it took my 12 year old workstation 5 seconds to 
>>> connect. 
>>> Are we not perhaps splitting hairs? 
>>> 
>>> 
>>> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
>>>  
>>> Eskimo North Linux Friendly Internet Access, Shell Accounts, and 
>>> Hosting. 
>>> Knowledgeable human assistance, not telephone trees or script 
>>> readers. 
>>> See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 
>>> 246-6874. 
>>> 
>>> On Fri, 6 Oct 2017, Ulrich Sibiller wrote: 
>>> 
>>>> Date: Fri, 6 Oct 2017 09:35:29 +0200 
>>>> From: Ulrich Sibiller <ul...@gmx.de> 
>>>> To: Robert Dinse <nan...@eskimo.com> 
>>>> Cc: Mihai Moldovan <io...@ionic.de>, x2go users 
>>>> <x2go-user@lists.x2go.org> 
>>>> Subject: Re: [X2Go-User] ssh-keygen.exe loads the processor every 
>>>> time the 
>>>> client starts 
>>>> 
>>>> On Fri, Oct 6, 2017 at 9:22 AM, Robert Dinse <nan...@eskimo.com> wrote: 
>>>>> 
>>>>> By doing so you weaken security for sites providing this 
>>>>> capability. 
>>>> 
>>>> Yes, maybe, maybe not. Think about sites that have strict rules about 
>>>> keys. Or sites having to use specific key types. Or RSA being 
>>>> compromised. Currently there's nothing an admin can do. 
>>>> 
>>>> It's the site's administrator that has to decide about that. The tool 
>>>> can provide a default but the admin must be enabled to change it if 
>>>> desired. 
>>>> 
>>>> Uli 
>>>> 
>>> ___ 
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>>> https://lists.x2go.org/listinfo/x2go-user 
>> 
>> ___ 
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> 
> 
> ___ 
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Re: [X2Go-User] Shared directory from Windows client does not mount

[Walid MOGHRABI]

Hi,

Got the same issue with 4.0.5.2, try updating to 4.1.0.0 or newer, there had 
been many changes on the SSH side which should fix your problem.


Regards,
Walid Moghrabi

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- Mail original - 

De: "Kalle Tuulos" <ka...@tuulos.net> 
À: x2go-user@lists.x2go.org 
Envoyé: Lundi 4 Septembre 2017 22:10:10 
Objet: [X2Go-User] Shared directory from Windows client does not mount 


I'm having several X2go installations, on several servers and for several 
users/clients. 





The problem is that shared directory mounting does not *usually* work on those 
computers, which have cygwin installed before installing X2go client. For some 
servers, it works even on those. I can't find out any rule there, as from some 
client computer, connections to some X2go servers work fine and on some X2go 
servers, the shared directory does not mount. Anyway, on those computers, which 
doesn't have cygwin installed, the shared directory mount seems to always work. 


The only clue I have found is that on /var/log/syslog on the server, there are 
following lines: 
---8<---8<--- 
/usr/bin/x2gomountdirs[23874]: WARNING: mounting of 
/cygdrive/C/Users/xxx/X2GO_S~1 failed 
---8<---8<--- 


I have tried to follow hints on some pages, which recommend decreasing 
permissions on client computer's .x2go/etc directory, but no help. 


The current installation is: 
Client: Windows 10 64bit Professional (does not matter, some of installations 
are Windows 7) 
X2go client version 4.0.5.2 


Server: Ubuntu 16.04 (does not matter - some of servers are 16.10) 
X2go server version 4.0.1.20-0~1125~ubuntu16.04.01 
The server was installed from X2go's PPA source. 


Thanks, 
Kalle 


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Re: [X2Go-User] X2Go vs. XRDP

[Walid MOGHRABI]

Brian, I don't really understand your point about your thin clients, LTSP 
images and remote connection to RedHat VMs.

From what I can tell, the lower spec thin clients we have are older Wyse 
celeron based with 1Gb of RAM.
My thin client boot from LAN with the TCE-NG setup and simply download a 230MB 
OS image and run from it diskless.
They start the X2Go client in display manager mode and eat about 512MB RAM, OS 
image included (running apps goes for about 200MB).
Since it's direct X2Go connection, there is no local stuff, only remote and 
these low specs Thin Clients perform as good as the higher specs PCs we 
converted to Thin Clients and which are 4GB, Core i3/i5 and more ...


Regards,
Walid Moghrabi

TRAVAUX.COM
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- Mail original - 

De: "brian town" <briantow...@gmail.com> 
À: "Daniel Lindgren" <bd.d...@gmail.com> 
Cc: "x2go-user" <x2go-user@lists.x2go.org> 
Envoyé: Mardi 13 Juin 2017 15:57:57 
Objet: Re: [X2Go-User] X2Go vs. XRDP 


I agree with Walid about XRDP being super fast and snappy with low resource 
intensive desktops. It worked really well for me with a XFCE set up on one 
project I was working on. However both XRDP and X2GO could not provide a good 
visualization for my current project that has thin clients pulling down LTSP 
images. The LTSP desktop images are all low resource but we use them as a 
jumping point to connect to Red Hat VMs. The only connection method I found 
that could support a decent desktop experience for our users as with X11VNC + 
XDMCP. I went through xrdp/x2go/NX and even Horizon View and all had either 
poor performance or in the case of Horizon View were just not really meant for 
Linux yet (the support is pretty awful). 


On Tue, Jun 13, 2017 at 9:40 AM, Daniel Lindgren < bd.d...@gmail.com > wrote: 



Hi all, 


I have used both xrdp and X2Go for a few years, just personal use, not 
professional/work related. 


I've recently upgraded to Debian 9 with KDE Plasma 5 and had some issues with 
X2Go, checked the wiki and found that Plasma 5 is unsupported at the moment. I 
researched alternatives and discovered ThinLinc. 


It's a commercial software, but free for home use up to 5 concurrent users. 
Works with Plasma 5 and performance is good, at least for my use case. 


When/if X2Go gains support for Plasma 5 I may go back, but for now I can't use 
it. 


Cheers, 
Daniel 
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Re: [X2Go-User] X2Go vs. XRDP

[Walid MOGHRABI]

Hi Stefan,

I went through the same problems and same tests comparing both X2Go to XRDP ... 
If it is of any help, here are my thinking :

XRDP is a good solution, it is efficient and works really well but it has some 
drawbacks too.
First, it lacks all the middleware we find with X2Go, especially the broker, 
the session management, the TCE settings, ...
It is mostly a good and efficient component for remote access but this is raw 
and even if it is not that complicated to setup, in a complex situation where 
you need brokerage, session management, AD integration, ... it makes things a 
bit more complicated.

On the performances side, things are not that simple ...
XRDP seem to offer a good GLX support with a fast software renderer so even h/w 
accelerated stuff just work, with limitations due to the remote thing but at 
least, it works, even h/w accelerated desktops such as Gnome 3, Unity, KDE, ... 
Not very fast but it works.
With less demanding desktops such as MATE or XFCE, it really flies and there a 
re a few bugs which even disappear such as these :

https://github.com/ArcticaProject/nx-libs/issues/337
https://github.com/ArcticaProject/nx-libs/issues/336
https://github.com/ArcticaProject/nx-libs/issues/301

Even applications that are quite slow under X2Go (presently, webkit based 
applications such as Chrome/Chromium and even Firefox without XRender=True)

But playing with some settings, you can get a very usable and snappy solution 
with all the advantages of X2Go that I already cited.
Here is my use case :

I use X2Go for a complete TCE setup (thin clients for my company) with about 
150 users connecting a farm for 32 servers.
Each server is installed with a custom Ubuntu 16.04 server + lightweight MATE 
desktop.
Each TCE boot straights from the network loading a minimalistic Ubuntu 16.04 
server + X2Go as display manager conencting to a X2Go session broker.
Each session is a full screen desktop with 1920x1080 resolution on a 100MB 
local LAN network.

I configured the session with these settings :

* Pack method : 64k-jpeg
* Speed : LAN
* Resolution : Fullscreen 1920x1080
* Sound : On with Pulseaudio

With these settings in this setup, even Chromium is usable, it is still beyond 
other applications such as LibreOffice, Gimp, the whole desktop itself and many 
more applications but fast enough for my users to work comfortably.

To me, X2Go is a real gain on the overall but I do agree that XRDP is faster on 
many points but X2Go is just more usable and complete.
And last but not least, there is active development by the Arctica team on the 
NX-Libs (what is the X2Go equivalent of XRDP in fact) and a lot of good things 
are coming in a near future, I just hope "near" is not too far from now.

Regards,
Walid Moghrabi

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- Mail original - 

De: "Stefan Seidel" <ssei...@vub.de> 
À: x2go-user@lists.x2go.org 
Envoyé: Mardi 13 Juin 2017 12:27:28 
Objet: [X2Go-User] X2Go vs. XRDP 


Hi, 

I have been trying to get X2Go to a usable state for a long time. Some may 
remember that I posted about slow performance even with Gigabit networking, 
mostly web browser usage was problematic. 

After having spent very much time trying to optimise X2Go to make it perform 
acceptably, I gave up. 

I then found and tried XRDP, and all my problems are solved. Although XRDP 
(with xorgxrdp drivers) uses more bandwith than X2Go, it is much more usable in 
almost all situations. Even ADSL links work ok, but with Gigabit connectivity 
it really flies (including video). 

I don't like to advertise for other "products", but this has made such a 
difference that I could not withhold this information from those who are not 
satisfied with X2Go. 

Maybe as a means of making X2Go better, I would encourage X2Go developers to 
install XRDP on a test server and test and compare its performance to X2Go. I 
would be surprised if X2Go would perform better - in fact I was surprised how 
much better XRDP was. Maybe there are things that can be done in X2Go to make 
it better by looking at how XRDP does things. 

I really wanted X2Go to work, but somehow it didn't work for me. 
I wish you all the best for improving the project in the future! 

Stefan 
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Re: [X2Go-User] High performance OpenGL issues

[Walid MOGHRABI]

This is normal since there is no proper GL support in X2Go (through lib-nx) by 
now.
This is a work in progress from the Arctica team by now but not completed yet.


Regards,
Walid Moghrabi

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- Mail original - 

De: "Robert GRASSO" <rgra...@altair.com> 
À: x2go-user@lists.x2go.org 
Envoyé: Lundi 6 Mars 2017 16:40:01 
Objet: [X2Go-User] High performance OpenGL issues 



Hello, 

I am trying to have high-performance OpenGL graphics in X2go, from a modeling 
software : it is based on Jogl; for instance, you can rotate objects in the 
GUI. I am having issues. 

I am using : 
- X2go client 4.0.5.1 on Windows 7 
- X2go server v 4.0.1 on RHEL 6 with KDE 

When I start the software on a physical machine with RHEL 6 and an updated 
NVIdia driver, on the physical screen, it works perfectly. 
When I start the software on the physical machine but with the display in the 
X2go client, the software crashes almost immediately 
Strangely, when I start the software on a virtual machine running RHEL 6 inside 
Vsphere, with the display either in the console or X2go, it works perfectly. 

So I assume that it may be related to other libraries brought in by the driver. 
I already figured out that I can work around the libGL.so from NVidia, if I add 
to the environment : 

export LD_LIBRARY_PATH=/usr/lib64 

In this way, the software uses the system's libGL.so, I can see it with ldd 
/usr/bin/glxinfo 

Unfortunately, this is not sufficient. Does anybody have a solution ? or a hint 
? 

Best regards 

R. Grasso 

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Re: [X2Go-User] libnx

[Walid MOGHRABI]

Okay, fix Bug#1151 and I push it to PROD :p

Good job guys :)

Regards,
Walid Moghrabi

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- Mail original - 

De: "Mike Gabriel" <mike.gabr...@das-netzwerkteam.de> 
À: "Walid MOGHRABI" <w.moghr...@servicemagic.eu> 
Cc: "Robert Dinse" <nan...@eskimo.com>, x2go-user@lists.x2go.org 
Envoyé: Vendredi 3 Mars 2017 16:47:34 
Objet: Re: [X2Go-User] libnx 

Hi Walid, 

On Fr 03 Mär 2017 16:20:26 CET, Walid MOGHRABI wrote: 

> Upgraded to 3.5.99.4 yesterday and this one is, at least for my use 
> case, a LOT more stable ... had no crash by now :D 

And 3.5.99.5 will have a lot less valgrind complaints. See todays 
commit history. 

Mike 
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Re: [X2Go-User] libnx

[Walid MOGHRABI]

Upgraded to 3.5.99.4 yesterday and this one is, at least for my use case, a LOT 
more stable ... had no crash by now :D


Regards,
Walid Moghrabi

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- Mail original - 

De: "Robert Dinse" <nan...@eskimo.com> 
À: "Walid MOGHRABI" <w.moghr...@servicemagic.eu> 
Cc: x2go-user@lists.x2go.org, "Mike Gabriel" <mike.gabr...@das-netzwerkteam.de> 
Envoyé: Vendredi 10 Février 2017 09:39:40 
Objet: Re: [X2Go-User] libnx 


I've fired up Firefox, went to youtube, looked for high resolution 
material, full screened it, let it go from one video to the next and for me it 
is performing solid, if less efficiently than it used to. 

Do you have the most recent nightly build of nxagent, all the libs, and 
x2goserver and client? 

I'm running Ubuntu 16.10 on the client and Ubuntu 16.04.2 LTS on the 
server side. The server I'm using has 32GB of RAM and I7-2600 CPU, Asus 
motherbaord. The client is an antique Mac Pro 1,1 with 4G of RAM and an 
Nvidia 7600GT video card. 

With 3.5.99.2 I was seeing core dumps about ever 4th time I tried to open 
a file with nvi, not seeing that behavior anymore. I don't usually use Firefox 
on this machine but it is running fine with youtube other than being slow (I'm 
seeing maybe 3 frames per second, at one time a year or so ago same hardware 
was doing full 30fps video so something has negatively impacted performance 
but a lot of other things besides x2go has changed in this time frame). 

-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 
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Knowledgeable human assistance, not telephone trees or script readers. 
See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874. 

On Fri, 10 Feb 2017, Walid MOGHRABI wrote: 

> Date: Fri, 10 Feb 2017 09:23:07 +0100 (CET) 
> From: Walid MOGHRABI <w.moghr...@servicemagic.eu> 
> To: Robert Dinse <nan...@eskimo.com> 
> Cc: x2go-user@lists.x2go.org, Mike Gabriel <mike.gabr...@das-netzwerkteam.de> 
> Subject: Re: [X2Go-User] libnx 
> 
> Well, I'm sorry to disagree ... For my concern, 3.5.99.3 is still very 
> unstable, even worst than before, the session crashes nearly 99% of the time 
> with Firefox on gfx intensive activities such as youtube. 
> 
> Previous release crashed less often and rarely in this case, I mostly had 
> crashes when attempting to translate a session between 2 TCEs for example but 
> common use was mostly stable (even though it crashed randomly anyway but not 
> that often). 
> 
> 
> Regards, 
> Walid Moghrabi 
> 
> TRAVAUX.COM 
> BAT I - PARC CEZANNE 2 290 AVENUE GALILEE - CS 80403 
> 13591 AIX EN PROVENCE CEDEX 3 
> 
> ----- Mail original - 
> 
> De: "Robert Dinse" <nan...@eskimo.com> 
> À: "Mike Gabriel" <mike.gabr...@das-netzwerkteam.de> 
> Cc: "Walid MOGHRABI" <w.moghr...@servicemagic.eu>, x2go-user@lists.x2go.org 
> Envoyé: Vendredi 10 Février 2017 01:43:53 
> Objet: Re: [X2Go-User] libnx 
> 
> 
> These must be significant as I've yet to have a core dump since the last 
> time I re-installed. Definitely the frequency is down. 
> 
> If I do get another core, is there any particular debugging information 
> that would be helpful, gdb backtrace, etc? 
> 
> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
>  
> Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. 
> Knowledgeable human assistance, not telephone trees or script readers. 
> See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874. 
> 
> On Thu, 9 Feb 2017, Mike Gabriel wrote: 
> 
>> Date: Thu, 09 Feb 2017 20:38:38 + 
>> From: Mike Gabriel <mike.gabr...@das-netzwerkteam.de> 
>> To: Robert Dinse <nan...@eskimo.com> 
>> Cc: Walid MOGHRABI <w.moghr...@servicemagic.eu>, x2go-user@lists.x2go.org 
>> Subject: Re: [X2Go-User] libnx 
>> 
>> Hi, 
>> 
>> On Do 09 Feb 2017 09:34:15 CET, Robert Dinse wrote: 
>> 
>>> I did not see anything in the release notes that was non-trivial or would 
>>> lead me to believe it should be more stable but on the machines I've 
>>> installed 
>>> it, nxagent has not core dumped yet. These are all Ubuntu 16.10 machines. 
>> 
>> We had at least two segfaulting issues [1,2]. One has been solved [1] in the 
>> nightly builds for nx-libs 3.5.99.x. 
>> 
>> The other one [2] is still under investigation. 
>> 
>> Mike 
>> 
>> [1] https://github.com/ArcticaProject/nx-libs/issues/293 
>> [2] https://github.com/ArcticaProject/nx-libs

Re: [X2Go-User] Compression method guidance

[Walid MOGHRABI]

Hi,

From my own testing, in a LAN setup, I found these settings to be my best 
choices :

* 16m-jpeg : good overall performances, especially with animated contents or 
videos at the cost of a small artefacts and blurryness around small texts
* 16m-rdp-compressed : good compromise between smoothness and readability
* 16m-png-jpeg : great readability, smoothness is good except for animated 
contents/videos

The name format is not named from the bpp but from the bandwidth it consumes.
For your use case, with mostly text based apps, I would recommend 2m-png-jpeg, 
should be good.

Regards,
Walid Moghrabi

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- Mail original - 

De: "Tristan Miller" <psychon...@nothingisreal.com> 
À: x2go-user@lists.x2go.org 
Envoyé: Vendredi 10 Février 2017 11:15:28 
Objet: [X2Go-User] Compression method guidance 

Dear all, 

X2Go supports an awful lot of different compression methods. Is there 
any guidance available for which compression methods work best in which 
scenarios? I didn't see anything on the X2Go wiki but it's possible 
I've overlooked it. I can't even find a description of what all the 
different compression methods actually are, though I'm guessing that 
most of them are named in the format 
bits_per_pixel-image_compression_algorithm. 

For my own use, I usually use X2Go to run individual applications (not 
an entire desktop) remotely. These applications are primarily 
text-based, such as terminal emulators, text editors, and mail 
clients. The remote machines have upload speeds of about 3 Mbit/s. 
Would it make sense for me to choose something png-based rather than 
jpeg-based? 256-png perhaps, since I am not looking at any images 
other than toolbar icons? 

Regards, 
Tristan 

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Re: [X2Go-User] x2go performance again

[Walid MOGHRABI]

Hi,

I'm struggling with performances too but mainly with web browser performances.
I'm on a LAN and using either 16m-jpeg (a few artifacts giving unpleasing 
readability on small texts but very speedy and responsive, youtube videos plays 
just fine but not in fullscreen) or 16m-png-jpeg (no artifact, good overall 
speed except for animated stuff such as videos)

I must say that I'm using it in 1920x1080 resolution in TCE mode.

The problem is not X2Go refresh performances but how some softwares interact 
with the X server.
In fact, I'm currently struggling with browsers and I ended with 2 kind of 
issues :

Xrender enabled browsers : Firefox or Epiphany.
Refresh is good but FF still tries to use 2D HW accelerated stuff with some css 
attributes (I discovered filter:alpha was one of them) which is then translated 
to software and is a CPU hog but, for "normal" workloads, it is the best 
compromise between features and performances (performances with youtube for 
example is just great)
Epiphany on the other hand is Webkit based and it has a blazingly fast 
Javascript engine AND render engine which works with Xrender which is not the 
case for most webkit based browsers.
Until now, for the workload where FF is slow (many JS + many CSS), it flies but 
it has a lot less feature and is somewhat buggy here and there (especially the 
dev tools are not working in Epiphany 3.18 which is shipped with Ubuntu 16.04 
that I use).

Webkit based browsers : Chrome/Chromium, Midori and others except Epiphany
They are all very fast with JS and CSS but, the whole rendering is damn slow 
and there is nothing that can be done, I tried to enable xrender and/or disable 
gl rendering, there was nothing I could do, this is still far too slow to be 
really usable.

On the other hand, every other apps that conforms well with X work like a 
charm, even heavily gfx based stuff such as Gimp, MyPaint, Libreoffice, 


Regards,
Walid Moghrabi

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- Mail original - 

De: "Stefan Seidel" <ssei...@vub.de> 
À: x2go-user@lists.x2go.org 
Envoyé: Lundi 30 Janvier 2017 10:42:01 
Objet: [X2Go-User] x2go performance again 


Hi, 

some time ago I inquired about peoples experience with x2go in a LAN 
environment. I have now built a TCE live system (TFTP-only, no NFS) and a new 
Jessie server and I am still not very satisfied. I tried almost all available 
options. Here is the setup: 

1GBit/s LAN on both sides 
Host: AMD 4.4GHz 8-core CPU with 32GB RAM 
Client: Pentium D 2.8GHz, 1GB RAM, nVidia 6200 with 2 screens@1200x1600 

I tested MATE desktop with Firefox 51 (tried XRender on/off) and Chromium 55. I 
usually set the browser to fill half of the screen, that mean roughly the same 
number of pixels as a Full-HD (1920x1080) screen. I usually open 
https://www.heise.de and scroll up and down a bit. 

nopack: almost the best of it all, responsiveness good, Chrome and Firefox 
without XRender laggy 

rfb-hextile/tight: better for small screen updates, worse for large screen 
updates, scrolling in Firefox with XRender active is *very* smooth 

rdp: almost identical to rfb 

adaptive: middle ground, everything is laggy but at least there's always the 
same amount of lag for small and big screen updates. Unacceptable though 
because almost all text has JPEG artifacts no matter whether the quality is set 
to 1, 7 or 9. Graphics like Munin graphs are really ugly. 

16m-png: good quality, mostly lag-free except Chrome and Firefox when XRender 
is off, becomes very unresponsive with lots of screen updates 

16m-jpeg: artifacts, speed like adaptive 


I believe nopack or rfb would give better performance if it was possible to 
circumvent going through SSH. I have set SSH to use arcfour (this is a trusted, 
isolated LAN) and performance has been slightly better. 

Is there any way of making the initial authentication and startup through SSH 
but then having the NX connection going directly to the client? That would save 
a lot of processing power! (I'm thinking similar to the "tunnel" feature for 
sound.) 

Regards, 

Stefan 
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Re: [X2Go-User] remote development environment

[Walid MOGHRABI]

Hi Stefan,

To be honest, I have something even more interesting to propose you but I'll MP 
for that.

Best regards,

Walid MOGHRABI


- Mail original - 

De: "Stefan Baur" <x2go-m...@baur-itcs.de> 
À: x2go-user@lists.x2go.org 
Envoyé: Jeudi 17 Novembre 2016 13:26:05 
Objet: Re: [X2Go-User] remote development environment 

Am 17.11.2016 um 12:20 schrieb Walid MOGHRABI: 
> This is just the global idea ... the detailed configurations are quite 
> extensive and too long to detail here. 

If you think this info could be useful for someone else and isn't 
confidential, then how about putting it on the Wiki as some kind of 
how-to or cooking recipe? 

If you don't have a Wiki account yet, simply say so, and we will arrange 
for you to get one. 

Kind Regards, 
Stefan Baur 

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Re: [X2Go-User] USB webcam does not work

[Walid MOGHRABI]

Hi Stefan,

I definitely volunteer to investigate on the TCE side as I spent a lot of time 
working on a fully working enterprise setup for X2Go TCE with current stable 
version because we'll be deploying it to production stage (about 150 users) if 
it passes the live test period (with a sample of about 15 users).
This is us who paid for making sound work with TCE and I'm very please with it, 
it is working extremely well, even videos are very enjoyable (100Mbps LAN must 
I precise) even though there is no such thing as video streaming or 
telekinesis/mteleplayer stuff in use.

I saw there were plenty of new things that were moving in the heuler repo 
regarding TCE which broke most of my setup and since it is not in the stable 
repo, I didn't want to base my POC on this but maybe you can give me more 
informations on what's new with this release and maybe an ETA on when this 
would move to the stable repo ...

I would really like to help in that matter, I'm fully concerned with this and I 
think my setup would interest many people since I'm using AD integration, auto 
mount of users shares, load balancing, session brokers, PXE boot, session 
preconfiguration, platform provisionning with Salt, ... 
Well, a real case scenario with many users as target.

I'd be happy to test whatever you like me to test and even document and/or 
write tutorials.

Keep me posted.

Best regards.

Walid Moghrabi


- Mail original - 

De: "Stefan Baur" <x2go-m...@baur-itcs.de> 
À: x2go-user@lists.x2go.org 
Envoyé: Lundi 31 Octobre 2016 20:13:36 
Objet: Re: [X2Go-User] USB webcam does not work 

Hi Olaf, 

you might want to consider switching to our new X2Go-TCE (also works via 
PXE/TFTP, if desired, but doesn't need NFS - instead it uses HTTP(S) or 
(T)FTP to load the required files into a ramdisk on the TC). 

In my opinion, it is a lot more flexible and you could try to run a 
local desktop on the TC, with the Skype client or a Browser (there's a 
Skype4Web beta that supports video calls, as I've been told) as part of 
the image. Remote applications would be pulled in via Published 
Application Mode instead of delivering a full desktop. 

This is an area where we could also use some volunteer manpower or 
people forking over some cash for paid-for development tasks, but at 
least the groundwork is there - so even if you don't have the skills to 
get it set up yourself, it should be way cheaper than adding USB support 
to X2Go. 

Kind Regards, 
Stefan Baur 

Am 31.10.2016 um 20:05 schrieb ola...@gmx.de: 
> Hi Stefan, 
> 
> thanks for the explanation, then I know now that it is not a 
> configuration error on my system. 
> 
> I'll see if I find a replacement for putty I had installed on 
> the flash drive of the thinclient. Then I would run on my computer (only 
> there I need the webcam from time to time) x2go over the client 
> software and would have in the background the option of the webcam. 
> 
> Thank you for your great work! 
> 
> Bye, 
> Olaf 
> 
> 
> Am Mon, 31 Oct 2016 19:30:41 +0100 
> schrieb Stefan Baur <x2go-m...@baur-itcs.de>: 
> 
>> Am 31.10.2016 um 19:28 schrieb ola...@gmx.de: 
>>> 
>>> From my webcam (Microsoft lifecam 3000 HD) works under x2go TCE only 
>>> the microphone, but no picture. I can also not check anything and 
>>> come no further, since the webcam is not shown with lsusb in shell. 
>>> 
>>> (By the way, other USB devices are full not recognized, as my 
>>> external hdd and a BlueRay drive. Via USB, only the microphone of 
>>> the webcam and USB sticks works so far.) 
>>> 
>>> How do I get the webcam to run? 
>> 
>> You don't. There is no USB forwarding support, because no volunteer 
>> coder has stepped up to code one in their free time, and no one wants 
>> to pay for the development costs either. 
>> 
>> We support Printing, Audio, and file sharing - that's it. 
>> 
>> Kind Regards, 
>> Stefan Baur 
>> 
> 
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Re: [X2Go-User] Enable sound on x2go tce

[Walid MOGHRABI]

Hi Olaf,

I'm completely sure you can make your USB Headset work in TCE mode since it 
only rely on Pulseaudio which is tunneled from the client to the server, I 
already use this and sound and microphone are working perfect.
Webcam is a much more complicated issue since the TCE kernel will certainly 
recognize your USB webcam but it won't transport the video stream to the server 
the way Pulseaudio does with sound.

Maybe there is a way but this is far beyond my skills regarding X2Go.
Not sure if you really need video with Skype but for sure, audio calls will 
work.

Regards.


- Mail original - 

De: ola...@gmx.de 
À: x2go-user@lists.x2go.org 
Envoyé: Lundi 31 Octobre 2016 18:17:53 
Objet: Re: [X2Go-User] Enable sound on x2go tce 

Hi Walid, 

it works, thank you very much! 
If I still manage to get usb and the webcam to run, I can 
perhaps even finally use skype. 


Bye, 
Olaf 


Am Wed, 26 Oct 2016 00:04:51 +0200 (CEST) 
schrieb Walid MOGHRABI <w.moghr...@servicemagic.eu>: 

> This has been fixed very recently : 
> http://code.x2go.org/gitweb?p=x2gothinclient.git;a=commitdiff;h=75211b6 
> 
> If I understood well, this is to be included in next X2Go major 
> release but this is easy to fix manually until then, just 
> modifiy /usr/sbin/x2gothinclientd inside your TCE chroot image with 
> the patch in the link. 
> 
> Regards. 
> 
> 
> - Mail original - 
> 
> De: "Olaf" <ola...@gmx.de> 
> À: x2go-user@lists.x2go.org 
> Envoyé: Mardi 25 Octobre 2016 23:14:45 
> Objet: [X2Go-User] Enable sound on x2go tce 
> 
> Hi! 
> 
> My thinclient loads x2go tce (Ubuntu 14.04) over 
> pxe. What do I have to do to make sound work? 
> 
> Extract from my /opt/x2gothinclient/etc/x2gothinclient_sessions: 
> ... 
> sound=true 
> soundsystem=pulse 
> startsoundsystem=true 
> soundtunnel=true 
> defsndport=true 
> sndport=4713 
> ... 
> 
> Bye, 
> Olaf 
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Re: [X2Go-User] Enable sound on x2go tce

[Walid MOGHRABI]

This has been fixed very recently : 
http://code.x2go.org/gitweb?p=x2gothinclient.git;a=commitdiff;h=75211b6

If I understood well, this is to be included in next X2Go major release but 
this is easy to fix manually until then, just modifiy /usr/sbin/x2gothinclientd 
inside your TCE chroot image with the patch in the link.

Regards.


- Mail original - 

De: "Olaf"  
À: x2go-user@lists.x2go.org 
Envoyé: Mardi 25 Octobre 2016 23:14:45 
Objet: [X2Go-User] Enable sound on x2go tce 

Hi! 

My thinclient loads x2go tce (Ubuntu 14.04) over 
pxe. What do I have to do to make sound work? 

Extract from my /opt/x2gothinclient/etc/x2gothinclient_sessions: 
... 
sound=true 
soundsystem=pulse 
startsoundsystem=true 
soundtunnel=true 
defsndport=true 
sndport=4713 
... 

Bye, 
Olaf 
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Re: [X2Go-User] multiwindow option and resizing an application window

[Walid MOGHRABI]

Hi, 


I also have an isuse of the same kind that is easily reproducible ... dunno if 
it is exactly the same issue but it might be related.
With X2Go Server stable (4.1.0.0-0~1304~ubuntu14.04.1) on Ubuntu 14.04 with 
MATE Desktop and X2Go client 4.0.5.1 for Windows on Windows7 and Windows10, 
with Terminator (terminal emulator) in Published Applications mode, when I 
maximize the application, app goes fullscreen but then, it diminish slowly the 
get back to pre-maximize size.

It does that only on Windows while it works normal on Linux.
Don't know if it will really help in this case but it is quite alike and since 
it is easily reproducible, it might help to put the finger on this.

Regards.



- Mail original - 

De: "Ulrich Sibiller"  
À: "Dennis P Dionne"  
Cc: x2go-user@lists.x2go.org 
Envoyé: Mercredi 19 Octobre 2016 08:41:10 
Objet: Re: [X2Go-User] multiwindow option and resizing an application window 

On Tue, Oct 18, 2016 at 9:19 PM, Dionne, Dennis P 
 wrote: 
> Thank you for replying! What it does is it kills the client connection but 
> the session is still running. When I reconnect it tries to resume and will 
> usually show the desktop for a few seconds and then the connection is killed 
> again. If I do this enough times (3-5 times) it will resume successfully but 
> the window is not resized and I still cannot resize it, but the session is 
> otherwise working fine. 

There should be a logfile on the session on the server, usually in 
~/x2go. Can you check for suspicious messages there? 


I think it is worth trying the upcoming 3.6.x version of the nx-libs. 
Unfortunately you need to build the rpm yourself. Please clone the 
repo at https://github.com/ArcticaProject/nx-libs.git and use the 
specfile in there to build an rpm. 

> I cannot get the linux x2go client (4.0.5.1) to work because of this issue 
> https://lists.opensuse.org/opensuse-bugs/2014-05/msg00556.html 
> https://lists.opensuse.org/opensuse-bugs/2014-05/msg00076.html 
> 
> I don't use the linux client so this is not an issue for me but for this 
> troubleshooting I can try to get it working. 

Yeah, have come over this problem, too. But as I am not involved in 
the x2goclient development or packaging I cannot help here. Anyone? 

> I did try this test with a much older version (4.0.1.4) of the client on 
> linux (which does work on RHEL6) and I was able to resize in windowed mode 
> successfully. That may be enough to 

Oh, that shifts focus back to windows again. Mike#2, any ideas? 

answer your question (and isolate it to windows). If not let me know 
and I will pursue getting 4.0.5.1 linux client working on RHEL6. 
According to the bug reports, I would have to update libssh to >= 0.6 
but that is problematic on RHEL6 (apparently it's unsupported because 
I can't even download it from RHN for RHEL6 but I can for RHEL7). I 
will have to install some newer packages in parallel with the older 
versions and update LD_LIBRARY_PATH when using x2goclient... 

> As far as giving you the application, unfortunately this application is 
> proprietary and I do not own it so I cannot give it to you. I know I am not 
> giving you much to help me troubleshoot this and I do apologize for that. If 
> you simply don't have enough information to troubleshoot this problem I 
> completely understand. 
> 
> One clue I found in the user's .xsession-x2go-errors log is an entry like 
> this: 
> 
> Window manager warning: Window  () sets an MWM hint 
> indicating it isn't resizable, but sets min size x and max size of 
> x; this doesn’t make much sense. 

If you google for that message you'll find that this is from metacity 
and only a harmless warning. However, I am wondering why the app cann 
be resized at all then. 

Do you see the resizing problem when using another window manager or 
even desktop? Can you sucessfully resize using xdotool? Can you run 
xwininfo on the application window and post the output? 

> This seems like the smoking gun, based on my limited understanding of what is 
> going on. I could try and write a stub application (in motif which this 
> problem application is written in) and attempt to reproduce this problem. 
> That code I could give you. If or when that is worthwhile let me know and I 
> can start on that. 

No, let's try other stuff first. 

Uli 
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Re: [X2Go-User] Problem running audio applications in TCE mode

[Walid MOGHRABI]

A few more informations about this bug, here is a snippet from /var/log/syslog 
taken from the TCE when opening a new X2Go session : 




Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Successfully dropped 
privileges. 
Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Successfully limited 
resources. 
Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Running. 
Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Watchdog thread running. 
Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Canary thread running. 
Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Successfully made thread 
2627 of process 2627 (/usr/bin/pulseaudio) owned by '106' high priority at nice 
level -11. 
Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Supervising 1 threads of 1 
processes of 1 users. 
Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Successfully made thread 
2637 of process 2627 (/usr/bin/pulseaudio) owned by '106' RT at priority 5. 
Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Supervising 2 threads of 1 
processes of 1 users. 
Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Successfully made thread 
2638 of process 2627 (/usr/bin/pulseaudio) owned by '106' RT at priority 5. 
Sep 23 13:51:50 x2gothinclient rtkit-daemon[2629]: Supervising 3 threads of 1 
processes of 1 users. 
Sep 23 13:52:14 x2gothinclient pulseaudio[2929]: [pulseaudio] pid.c: Daemon 
already running. 
Sep 23 13:52:17 x2gothinclient pulseaudio[2627]: [pulseaudio] x11wrap.c: 
XOpenDisplay() failed 
Sep 23 13:52:17 x2gothinclient pulseaudio[2627]: [pulseaudio] module.c: Failed 
to load module "module-x11-publish" (argument: "display=:50"): initialization 
failed. 
Sep 23 13:52:33 x2gothinclient acpid: client 2575[0:0] has disconnected 




If it helps ... 


Regards, 


Walid 



- Mail original -

De: "Walid MOGHRABI" <w.moghr...@servicemagic.eu> 
À: x2go-user@lists.x2go.org 
Envoyé: Vendredi 23 Septembre 2016 11:28:45 
Objet: [X2Go-User] Problem running audio applications in TCE mode 


Hi, 


I'm still struggling to make my TCE setup work correctly. 
I managed to fix about every bits here and there but there is still one 
important part that I can't get to fix which is managing audio applications to 
work in TCE mode. 


To be clear, what I call "TCE mode" is pxe booting an diskless station with 
x2gothinclient (per the doc setup with default settings, Debian wheezy based 
with heuler x2go client) 

When I open a X2Go session with a local x2go client on my Ubuntu laptop (or 
even with x2goclient under windows), no problem, I have sound with PulseAudio 
fully working, I can play videos on youtube, hear MP3s with totem or any other 
audio application. 
Running the same session with a TCE client works great until I want to hear a 
sound ... youtube videos are hanging with no sound, playing MP3s don't even 
start. 
Anything related to PulseAudio seems broken in TCE mode and this is very 
annoying to me because we'd like to deploy TCEs in my company to replace about 
150 Windows PCs but this is for a call center so if audio is not working, this 
is a no go. 


I'm pretty sure this can be fixed with some PulseAudio configuration tuning but 
I must admit that I'm totally confused by PA and I don't understand a bit of 
the beast so any help would be gladly welcomed ! 


Best regards, 




Walid MOGHRABI 
Exploitation / Operation 
Id SKYPE : walid_smagic 





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[X2Go-User] Problem running audio applications in TCE mode

[Walid MOGHRABI]

Hi, 


I'm still struggling to make my TCE setup work correctly. 
I managed to fix about every bits here and there but there is still one 
important part that I can't get to fix which is managing audio applications to 
work in TCE mode. 


To be clear, what I call "TCE mode" is pxe booting an diskless station with 
x2gothinclient (per the doc setup with default settings, Debian wheezy based 
with heuler x2go client) 

When I open a X2Go session with a local x2go client on my Ubuntu laptop (or 
even with x2goclient under windows), no problem, I have sound with PulseAudio 
fully working, I can play videos on youtube, hear MP3s with totem or any other 
audio application. 
Running the same session with a TCE client works great until I want to hear a 
sound ... youtube videos are hanging with no sound, playing MP3s don't even 
start. 
Anything related to PulseAudio seems broken in TCE mode and this is very 
annoying to me because we'd like to deploy TCEs in my company to replace about 
150 Windows PCs but this is for a call center so if audio is not working, this 
is a no go. 


I'm pretty sure this can be fixed with some PulseAudio configuration tuning but 
I must admit that I'm totally confused by PA and I don't understand a bit of 
the beast so any help would be gladly welcomed ! 


Best regards, 




    Walid MOGHRABI 
Exploitation / Operation 
Id SKYPE : walid_smagic 




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Re: [X2Go-User] Web browser performance over X2Go

[Walid MOGHRABI]

Also encountered that (and even stranger things related to video playing with 
Youtube for example but not limited to it ...). 
Did you try to disable hardware acceleration and smooth scrolling in the 
advanced preferences ? 


I did and it gaves me better results. 


Regards, 




Walid MOGHRABI 
Exploitation / Operation 
Id SKYPE : walid_smagic 



- Mail original -

De: "Jordan Sokolic" <jor...@twiggle.com> 
À: "Stefan Seidel" <ssei...@vub.de> 
Cc: x2go-user@lists.x2go.org 
Envoyé: Lundi 29 Août 2016 10:45:46 
Objet: Re: [X2Go-User] Web browser performance over X2Go 


Stefan, thank you. I did not think to restart the browser when I tried to 
toggle that setting. This is a great improvement! 
Too bad they are deprecating this feature. The video you shared in the link 
demonstrates exactly my experience. I hope the FF team decides to continue 
supporting this legacy mode. 
Thanks again for sharing this. 


Jordan 


On Mon, Aug 29, 2016 at 9:36 AM, Stefan Seidel < ssei...@vub.de > wrote: 




It's still there in the 51.0.a1 nightly build. 

There's a conversation on reddit about it (started by me) and also a bug 
report: 

https://www.reddit.com/r/firefox/comments/4nfmvp/ff_47_unbearable_slow_over_remote_x11/
 
https://bugzilla.mozilla.org/show_bug.cgi?id=1263222 

Stefan Seidel 

- 
On Sunday 28 August 2016 23:25:50 Stefan Seidel wrote: 
> The variables gone by 50.Â~ 
> 
> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ 
> -_- Eskimo North Linux Friendly Internet Access, Shell Accounts, and 


> Hosting. Knowledgeable human assistance, not telephone trees or script 
> readers. See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 
> 246-6874. 
> On Mon, 29 Aug 2016, Stefan Seidel wrote: 
> > Date: Mon, 29 Aug 2016 08:11:53 +0200 
> > From: Stefan Seidel < ssei...@vub.de > 
> > To: Jordan Sokolic < jor...@twiggle.com > 
> > Cc: x2go-user@lists.x2go.org 
> > Subject: Re: [X2Go-User] Web browser performance over X2Go 
> > 
> > Hi Jordan, 
> > 
> > Firefox 47 disabled XRender support by default. Go to about:settings and 
> > search for xrender, set the property to true. That made it a lot better 
> > for 
> > me. 
> > 
> > Stefan 
> > 
> >> Date: Sat, 27 Aug 2016 12:34:32 +0300 
> >> From: Jordan Sokolic < jor...@twiggle.com > 
> >> To: x2go-user@lists.x2go.org 
> >> Subject: [X2Go-User] Web browser performance over X2Go 
> >> 
> >> Message-ID: 
> >> <CAFbFDtijPrfER_DEu+zM11N08FKb_Zn-WdUEkR99AQN1zZ9o= q...@mail.gmail.com > 
> >> 
> >> Content-Type: text/plain; charset="utf-8" 
> >> 
> >> Hello, 
> >> I use a web frontend for work that runs locally on my server over X2Go 
> >> for 
> >> about one year with success. 
> >> Some months ago I noticed a significant decrease in performance when 
> >> using 
> >> Firefox. My server is running Ubuntu 16.04 with MATE desktop, Windows 10 
> >> client. Up to Firefox version 39.0.3 performance of loading pages, 
> >> scrolling, browsing etc. was nearly flawless over a 5Mbit WAN link (with 
> >> the exception of embedded video elements). However it seems the release 
> >> of 
> >> Firefox version 40.0 introduced some changes in rendering (see 
> >> https://www.mozilla.org/en-US/firefox/40.0/releasenotes/ ) that do not 
> >> play 
> >> nice with X2Go. Further reduction in performance was noticed in versions 
> >> 46.0 and 48.0. The current release (48.0) even has trouble rendering a 
> >> plain text document without lag and choppiness. 
> >> I have tried toggling various flags relating to graphics, compositing, 
> >> rendering, etc. to no avail. 
> >> To work around this problem the only solution I have found is to forward 
> >> ports over a separate SSH tunnel and browse locally, but this is 
> >> cumbersome 
> >> to set up every time I need to connect. 
> >> I have preferred Firefox to Chrome over X2Go because the latter has 
> >> always 
> >> been unusably slow; now they are both similarly choppy and slow. 
> >> Has anyone else noticed this? 
> >> Any advice or help would be appreciated. 
> >> 
> >> Regards 
> >> 
> >> Jordan 



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Re: [X2Go-User] Launching "gedit" crashes X2go session

[Walid MOGHRABI]

I had something similar with Netbeans, apparently, this was calling for 3D 
hardware compositing functions which is not supported by nxlibs so the X server 
crashed and so did the session too. 
I can't remember in which logs I saw this however ... 


I managed to stabilize Netbeans under X2Go by switching to a less demanding 
theme with no hardware acceleration needed. 


Regards, 




Walid 
- Mail original -

De: "KARL A. WOELFER"  
À: x2go-user@lists.x2go.org 
Envoyé: Jeudi 16 Juin 2016 20:26:34 
Objet: [X2Go-User] Launching "gedit" crashes X2go session 




Has anyone seen this? 

> A user starts X2go connecting to a Debian 8 server, 
> (XFCE window manager) 
> typing "gedit" in a terminal window nukes the session. 
> 
> Thanks in advance for any troubleshooting tips. 
> 
> - Karl 


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Re: [X2Go-User] X2Go Seamless Mode

[Walid MOGHRABI]

You can even use the "Published Applications" mode which lets you present any 
application you want to your users (.desktop apps that are inside the 
/etc/x2go/applications folder), every application will have its own window 
seamlessly integrated on the user desktop. 
Your users will have a tray icon from which they'll have some sort of Start 
menu to launch all those apps. 





    Walid MOGHRABI 
Exploitation / Operation 
Id SKYPE : walid_smagic 



- Mail original -

De: "Schmid Andreas" <andreas.sch...@bd.so.ch> 
À: "x2go-user@lists.x2go.org" <x2go-user@lists.x2go.org> 
Envoyé: Mercredi 27 Avril 2016 12:01:55 
Objet: Re: [X2Go-User] X2Go Seamless Mode 



Hi Mukul, 

Yes, this is possible. In the session preferences, set the session type to 
“Single application” and enter the command to run that application (e.g. xterm) 
in the “Command” field behind. Like this X2Go Client will run in seamless mode, 
showing only the XTerm window integrated into your Windows Desktop. 

Best regards, 
Andy 





Von: x2go-user-boun...@lists.x2go.org [mailto:x2go-user-boun...@lists.x2go.org] 
Im Auftrag von Mukul Agrawal 
Gesendet: Fre itag, 22. April 2016 20:57 
An: x2go-user@lists.x2go.org 
Betreff: [X2Go-User] X2Go Seamless Mode 



Hello: 



I am trying to connect from Windows7 machine to Ubuntu (trusty) server. 

I will like to use X2Go in "seamless" mode ... meaning that if I start a single 
application, say xterm, on Ubuntu then I want only single xterm window to show 
up on my MSwin7 computer. 

Is that possible? X2Go website says it is a Remote Desktop program, but 
wikipedia says that you have seamless mode and your client also seam to allow 
it to attach to single application. 

If somebody can clarify upfront if this is possible or not ... it will save me 
a lot of time and effort. Thanks in advance! 




Regards, 

Mukul ( https://sites.google.com/site/mukulagrawal ) 
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