[X2Go-User] Problems with java GUI application

[Kevin Kremer]

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.moghrabi at 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
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>----- Mail original ----- 
>
>De: "Ulrich Sibiller" <uli42 at gmx.de> 
>À: "Kevin Kremer" <kkmailinglists at gmail.com> 
>Cc: "x2go users" <x2go-user at 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 <kkmailinglists at 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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