Dear Abdelkrim Oukerroum

The error "Segmentation Fault (Core Dumped)" is a common issue on Linux systems. It means that a program tried to access a memory segment it was not allowed to, leading to a crash. This error can occur due to several reasons:

1. Issue with Program Version or Dependencies

• The version of Wine you installed might not be compatible with your Linux Mint or system libraries.
• Some Wine dependencies may be missing or incompatible.

2. Configuration Issues

• Default Wine configurations might not be set up correctly.
• There could be a corrupted configuration file in the ~/.wine directory.

3. Graphics Library Problems

• If you’re using specific graphical settings like Direct3D or OpenGL, they might not be compatible with your hardware or drivers.

4. Hardware Problems

• In rare cases, issues with RAM or hardware can cause segmentation faults.

Behnood Farzad thanks you for your response. How I can fix this problem?

Dear Abdelkrim Oukerroum

These solutions seem to work, but I'm not sure if they will work right or not.

1. Install Compatible Fortran and GCC Versions

Ensure you are using a compatible version of gfortran and gcc, as Wien2k18 often requires older versions for successful compilation:

sudo apt install gfortran-7 gcc-7 sudo update-alternatives --config gfortran sudo update-alternatives --config gcc

2. Rebuild the Wien2k18 Binary Files

After ensuring that the necessary compilers and libraries are installed, rebuild the binary files for Wien2k18:

cd ~/WIEN2k make all

3. Install OpenMPI for Parallel Execution

If you are running the parallel version of Wien2k, make sure OpenMPI is installed and configured correctly:

sudo apt install openmpi-bin openmpi-common libopenmpi-dev mpirun --version

4. Set Up Environmental Variables

Add the required paths to your environment. Edit the ~/.bashrc file and include the following lines:

export PATH=$PATH:/path/to/WIEN2k export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/path/to/libraries

Reload the terminal to apply these changes:

source ~/.bashrc

5. Install Required Libraries

Ensure that essential libraries, such as LAPACK, BLAS, and ScaLAPACK, are installed:

sudo apt install liblapack-dev libblas-dev libopenmpi-dev

6. Debugging Execution

To diagnose the root cause of the segmentation fault, run Wien2k in debug mode:

ulimit -c unlimited ./program_name > debug_log.txt 2>&1

Inspect the debug_log.txt file for detailed error messages.

7. Check Architecture and System Compatibility

Verify that your system uses a 64-bit architecture, as Wien2k18 is designed for such systems:

uname -m

If you are on a 32-bit system, consider switching to a 64-bit Linux Mint.

8. Ensure X11 Is Properly Configured (For GUI)

If the issue occurs while using the graphical interface of Wien2k, make sure X11 is installed and working:

sudo apt install xorg echo $DISPLAY

Dear Dr. Behnood Farzad,

I have good the same issue with wien2k 18, my system is ubuntu 20.04.

when I tried

sudo update-alternatives --config gfortran

it returned error

Command line option --config is not understood

Could you please give me some advice? Thank you very much for your help!