why menubar is hiding in wordpress admin

i am working on wordpress where the user has diffrent but after the user login with role subscriber all menus of admin are hiding which should not hide . it should work as usual.how to solve this issue . i want all my menu to appear. before it was redirecting to profile.php .then i made changes in wp-login.php

$redirect_to = user_admin_url();

my idea is, user with all role will be redirect to same page ie wp-admin page .then according to user role remove menu from dashboard by using remove_menu_page

via Chebli Mohamed