Visualization of OpenModelica 1.12 not working on Citrix

[Christian Kral <dr.christian.kral@…>]

In our school we are using Citrix to work on virtual desktops. The underlying operating system is Windows 7. We recently installed version 1.12.0 of OpenModelica on this virtual Windows 7 system, which is available through Citrix. Everything works well, except for the 3D visualizations.

When I simulate (with animation) the double pendulum example included in the MSL, the window content turns black. The drop down menus are still somehow accessible but everything else is back.

I am wondering if you have an idea on what the issue could be. To me this sounds like a missing driver to be installed on the virtual Windows system in order to cooperate with the visualization of OpenModelica. Could you possibly give me a hint or is there any additional (standard) software that shall be installed on the Citrix system?

P.S. I have to not tested OpenModelica 1.11.0 visualizations on Citrix...

[Martin Sjölund]

I would assume this is a problem with Citrix not handling 3D acceleration. This is a quite common problem with remote desktops. If you run Windows Media Player, YouTube or similar in Citrix, does that work fine?

[dr.christian.kral@…]

I tried Windows Media Player and YouTube and both work well on Citrix.

[Adrian Pop]

Citrix might have issues with OpenGL or other type of GPU based hardware acceleration. I guess one would need to look into the Citrix settings to see if they can fix it.
What happens if you run some 3D modeling tools that use Direct X or OpenGL?

[Christian Kral <dr.christian.kral@…>]

OK, thanks for your hints. I will check with our IT guys on the OpenGL and Direct X settings. I will post the results once I have more details.

[Christian Kral <dr.christian.kral@…>]

Apparently, our IT provides two different Citrix profiles. The one I was working with, did not render the 3D models correctly. Our IT told me to switch to the other profile where rendering works OK with no issues. Unfortunately I have to technical details yet on what the difference between the two profiles is. In case I get some further information, I will post it here.