Questions[systemd-coredump](ubuntu)

I suddenly accessed and saw almost subfolders in my /opt folder changes to systemd-coredump for ownership and group. Why is it so and is it safe to change back everything to my username?

drwxr-xr-x  9 systemd-coredump systemd-coredump 4096 Jun 24  2021 pdfstudioviewer2021
drwxr-xr-x  7 systemd-coredump systemd-coredump 4096 Jun 27  2021 petsc-3.15.1_ompi-3.0.1
drwxr-xr-x  6 systemd-coredump systemd-coredump 4096 Jun 28  2021 proj-6.3.2
drwxr-xr-x  4 systemd-coredump systemd-coredump 4096 Okt 29  2021 pybind11-2.6.2
drwxr-xr-x  4 systemd-coredump systemd-coredump 4096 Jun 28  2021 qhull

I was going to do secondary structure analysis (of protein) by using 'gmx do_dssp' module (I use Gromacs package). 'Segmentation fault' occurred after I gave the command line - gmx do_dssp -f native.xtc -s md.tpr -map and I couldn’t get the outputs that were so important. What should I do to fix this error?

• My current ubuntu version is 20.04
• Gromacs is a package that used for running molecular dynamic simulations. In this package, all command lines begins with gmx. In this here gmx do_dssp .... is a command for which had to give me required information.
• Before, such an error didn't occurred with ubuntu 18.04 .
• All commands except for gmx do_dssp works well (Gromacs isn't broken installed). That is, the problem is only with this command.

In opening a bug report for a program just now, a core dump from coredumpctl was requested. Running that command produced a message that the command wasn't available, but could be made available by installing systemd-coredump.

When I installed systemd-coredump, I saw that installing it REMOVED the packages apport and apport-kde. (I'm using Kubuntu 18.04.)

I completed the filing of that bug report, using a coredump provided from coredumpctl as requested.

Now, is there a reason to prefer coredumpctl to apport? I see from the package descriptions that apport-kde is the GUI; probably that's what I've been seeing pop up after a program crash. But it doesn't seem provide a "get coredump" button in the UI when it pops up, just a "relaunch" or "leave closed" option. Does systemd-coredump have any analogous UI tool?

Perhaps more to the point, is there a way to provide the same coredump from apport as I provided from coredumpctl (or better yet to provide it from the apport-kde GUI), or are the results qualitatively different?

Really what I'm trying to establish is whether I should leave systemd-coredump installed, or remove it by reinstalling apport-kde just to have my system closer to the "normal" setup for Kubuntu 18.04. I'd like to understand the implications of the decision.