notworking.php

$args = array(
		'orderby' => 'title',
		'order' => 'ASC',
);
$wp_query = new WP_Query($args); ?>

working.php

$args = array(
	'post_type' => 'portfolio',
	'numberposts' => $num,
	'orderby' => 'title',
	'portfolio_category' => $cat_slug,
	'order' => 'ASC',
	'suppress_filters' => 0
	);

	$latest = get_posts($args);