apache child pid exit signal Segmentation fault (11)

Question

when I installed joomla I can't see the index.php and I get this messages in my /var/log/apache2/error.log

[notice] child pid 3211 exit signal Segmentation fault (11) 

for activate the coredump, I follow the instructions in this link

CoreDumpDirectory /tmp/apache2-gdb-dump # added this to /etc/apache2/apache2.conf mkdir -p /tmp/apache2-gdb-dump chown www-data: /tmp/apache2-gdb-dump chmod 0777 /tmp/apache2-gdb-dump /etc/init.d/httpd restart 

but I don't see nothing in coredumpdirectory

ls /tmp/apache2-gdb-dump 

I can see the localhost/administrator of joomla but not localhost/index.php.

Answer 1

I solved in joomla.
I activate the debug mode and apply

and deactivate debug mode, with this I fix the problem.