12.10, acer 4736g ubuntu locks screen instead of hibernate

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http://askubuntu.com – a few days ago i was looking a way to make my laptop's hibernate process faster. after searching on the internet, i found an intruction to install uswsusp for faster hibernate process. 'sudo apt-get install uswsusp' 'sudo apt-get install hibernate' 'sudo ln -sf /usr/sbin/hibernate /usr/sbin/pm-hibernate' but, after i did that command line, now my laptop cannot hibernate. it only locks the screen when i press the hibernate. i also already tried to purge the uswsusp and hibernate and unlink the /usr/sbin/pm-hibernate, but no changes. so i installed them back on. please help, is there a way (HowTos)