Here is what I did to fix:
1. follow all this procedure: https://bugs.launchpad.net/ubuntu/+bug/105490/comments/9
2. sudo /etc/init.d/udev restart
3. remove /etc/uswsusp.conf
4. sudo /usr/sbin/update-initramfs
After these procedure, hibernation feature works correctly.
I think that the generated /etc/uswsusp.conf is not suitable. But I have not reveal what is wrong of uswsusp (or other packages).
I confirmed this problem, too.
Here is what I did to fix: /bugs.launchpad .net/ubuntu/ +bug/105490/ comments/ 9 update- initramfs
1. follow all this procedure: https:/
2. sudo /etc/init.d/udev restart
3. remove /etc/uswsusp.conf
4. sudo /usr/sbin/
After these procedure, hibernation feature works correctly.
I think that the generated /etc/uswsusp.conf is not suitable. But I have not reveal what is wrong of uswsusp (or other packages).