Linux issue? FreeCAD1.1.1 issue? or PrePoMax issue?

General Questions
1

Hi Y’all,
I am planning to use the method of drafting my component in FreeCAD, importing into PrePoMax to change format and other work, then to OpenRadioss and back to PrePoMax for post processing.

I am at my wits end with a problem, possibly Linux or possibly FreeCAD. I haven’t gotten any help from the FreeCAD forum.

After Flatpak automatically installed the upgraded FreeCAD 1.1.1 over FreeCAD1.0, I encountered an error message that I didn’t have when I had just FreeCAD 1.0
I get an error message when I apply Gmsh on a bar, shown in the attached picture.

19Apr26 FreeCAD1-1-1 Error message when FEM mesh by Gmsh
19Apr26 FreeCAD1-1-1 Error message when FEM mesh by Gmsh1024×1024 141 KB

When I went to set up WINE for using PrePoMax.exe on Linus, I got a similar error which I did not encounter before the upgrade of FreeCAD1.0:

charlie@charlie-desktop:~/Documents/FEA/PrePoMax/PrePoMax v2.5.0$ pwd
/home/charlie/Documents/FEA/PrePoMax/PrePoMax v2.5.0
charlie@charlie-desktop:~/Documents/FEA/PrePoMax/PrePoMax v2.5.0$ wine ^[[200~/home/charlie/Documents/FEA/PrePoMax/PrePoMax v2.5.0~ PrePoMax.exe
ERROR: ld.so: object ‘libgtk3-nocsd.so.0’ from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘libgtk3-nocsd.so.0’ from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
wine: cannot find L"\001b[200~/home/charlie/Documents/FEA/PrePoMax/PrePoMax"
charlie@charlie-desktop:~/Documents/FEA/PrePoMax/PrePoMax v2.5.0$ ^C
charlie@charlie-desktop:~/Documents/FEA/PrePoMax/PrePoMax v2.5.0$

The error message is the same in both cases. I set up wine with another .exe before even starting to use FreeCAD without any error messages.

Any help in understanding what is happening and why would be appreciated.
Thanks,
Charlie

2

It might be a fault of Flatpak. Can you use AppImage for FreeCAD instead ?

If you have a GitHub account, it would be best to report it in FreeCAD’s GitHub repo.

3

Thanks for your advice. I have reported this twice on the FreeCAD forum and no response.

I downloaded and tried to open the FreeCAD-1-1-1 AppImage file with unzip without success.
I tried to find software to open the AppImage file but nothing at the moment. I will check Flatpak to see what is available.

Thanks,
Charlie

4

It would be better to report it directly on GitHub: Issues · FreeCAD/FreeCAD · GitHub

I can’t reproduce it, but I could report it for you (although, if your feedback is needed, I will have to ask you to provide it).

I used to test AppImage version of FreeCAD on Ubuntu. The installation procedure was as follows:

  1. Set it as executable.
  2. Open the command window and type:

./FreeCAD_xxx.AppImage --appimage-extract

  1. Go to squashfs-root
  2. Type this in the command window:

./AppRun

5

Hello @CharlieM,

just make your FreeCAD-AppImage executable (no unzip).

Just rightclick on the AppImage, select properties and hook on the excecute field.

After that you can start it with double click.

Thats what i’ve done on Ubuntu 24.04 LTS

Greetings Robin

6

Yes, that should work too. I was unzipping it so that I could modify some Python files to test small changes without the need for compilation.

Both methods are described here: https://wiki.freecad.org/AppImage

7

Hi FEAnalyst and Robin,

I just submitted an error report in the FreeCAD - github.org webpage. This is different from the forum.freecad.org where I have previously submitted this issue.

I will let you know if I get some help.

Many thanks for your help. I will go and try the suggested method for the FreeCAD AppImage set up.

Thanks,
Charlie

8

Ok, sure, I will watch this issue and try to find someone who could fix it.

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9

Hi FEAnalyst and Robin,

I used the software manager which installed the flatpak programs and uninstalled and reinstalled FreeCAD 1.1.1 a couple of times. After being reinstalled, I checked FreeCAD with a bar with a hole in it. There were problems with Gmsh error statement.

I uninstalled FreeCAD then used AppImage to install FreeCAD 1.1.1 appimage.

Executed FreeCAD appimage and it worked. I then ran a test with a bar with a hole.

No problems Gmsh. Now I will shut down computer and reboot.

I will report this to github FreeCAD and then test with wine PrePoMax.exe to see what happens.

Many thanks for your help.

Tomorrow I will export FreeCAD files for the bar with hole and see if I can get the files into PrePoMax and then to OpenRadios.

Have a good evening.

1 Like