CodeIgniter URL routing doesn't work - php

Question

I am using Ubuntu 12.10. And I am having trouble removing the "index.php" from my codeigniter site URL.
My .htaccess files looks like this, I have my code inside hmvcExample folder.
*
RewriteEngine On
RewriteBase /hmvcExample/
### Canonicalize codeigniter URLs
# If your default controller is something other than
# "welcome" you should probably change this
RewriteRule ^(welcome(/index)?|index(\.php)?)/?$ / [L,R=301]
RewriteRule ^(.*)/index/?$ $1 [L,R=301]
# Removes trailing slashes (prevents SEO duplicate content issues)
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+)/$ $1 [L,R=301]
# Enforce www
# If you have subdomains, you can add them to
# the list using the "|" (OR) regex operator
RewriteCond %{HTTP_HOST} !^(www|subdomain) [NC]
RewriteRule ^(.*)$ http://www.domain.tld/$1 [L,R=301]
# Enforce NO www
#RewriteCond %{HTTP_HOST} ^www [NC]
#RewriteRule ^(.*)$ http://domain.tld/$1 [L,R=301]
###
# Removes access to the system folder by users.
# Additionally this will allow you to create a System.php controller,
# previously this would not have been possible.
# 'system' can be replaced if you have renamed your system folder.
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php/$1 [L]
# Checks to see if the user is attempting to access a valid file,
# such as an image or css document, if this isn't true it sends the
# request to index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]
# Without mod_rewrite, route 404's to the front controller
ErrorDocument 404 /index.php
*
And my I have removed "index.php" from config.php as well. But I still get the following error when i try to load the site without "index.php"
Not Found
The requested URL /hmvcExample/signup was not found on this server.
Apache/2.2.22 (Ubuntu) Server at localhost Port 80
Please Help. Thanks.

Answer 1

This seems to be one of the question should have been looking for - How to remove "index.php" in codeigniter's path
And there is another config that you need to edit:
$config['uri_protocol'] = 'AUTO';
Change the line written above to the following:
$config['uri_protocol'] = 'REQUEST_URI';
If you have done all of this, there still might be one issue left - enable mod_rewrite

Answer 2

MAKE sure you have AllowOverride All set up in the /etc/httpd/conf/httpd.conf (centos apache 2.2)
config:
$config['index_page'] = '';