netgen does not start anymore, X error

I found a little more information about this. I checkinstalled a more recent version of netgen (properly sed'ing tcl8.6 and tk8.6 to tcl8.5 and tk8.5 in all the Makefiles to prevent stumbling into another bug related to wrong symbols in linkedition) and found the same problem. Alas, it is reported in debian, which even suggest a fix in Ubuntu 15.10 (didn't work for me tough):

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=782361

It is also reported in netgen itself (sourceforge but tracker): ttps://sourceforge.net/p/netgen-mesher/bugs/21/ but with no updates.

Also tried in a third machine with Ubuntu 15.10 and GeForce 6200 TurboCache. No deal, same problem.

I was able to compile and run netgen 6.0 beta when I noticed it tried to compile with -lTogl1.7 which does not match the library name /usr/lib/libTogl.so.1.7. I soft-linked /usr/lib/libTogl1.7.so to the library and compilation worked. So this whole issue might have to do with naming the library... Maybe an ld.so.conf.d entry for it would solve the issue?

Status changed to 'Confirmed' because the bug affects multiple users.

That's why netgen does not get migrated to Debian testing, it is only in unstable, because it is not installable.

Oh i was having this trouble since a month. thank you thank you thank you so very much. :)
it worked like pro!

This is supposed to be solved by a hint of J. Schoeberl:
https://sourceforge.net/p/netgen-mesher/discussion/905307/thread/946ccfc2/

Well here we are at Nov 5 2017 and Ubuntu17.01 still has the same problem. It is interesting that Debian unstable has a working copy. I really need this program and have wasted hours trying to get it to work. The J. Schoeberl suggestion above may work for some but not for me.
System Debian Stretch host with qemu Kubuntu as guest.

If you do an apt-cache depends dump you will find that libgl1-glvnd-nvidia-glx is used in the debian version and mesa used in the Ubuntu version. Also, libjpeg8 is used in Ubuntu but libjpeg62-turbo is used in Debian. The liboce files are all version 10 in Ubuntu and version11 in Debian.

This problem has been around for almost 2 years without even being assigned . I hope this will kick someone in the tush and get some action.

garyr

The hint worked for me.
16.04 LTS on i7

Also seen on AskUbuntu - https://askubuntu.com/q/1053877/66509 .
One line fix:
    sudo sed -i "s/\-indirect\ true\ \}/\-indirect\ false\ \}/g" /usr/share/netgen/drawing.tcl