Hello,
I will transfer your problem to the developer, who needs to know your keyboard and mouse models, and please provide the full file of /var/log/syslog. Meanwhile, we found that this is a kernel bug:
http://forums.linuxmint.com/viewtopic.php?f=6&t=6899

Currently, the solution is：
https://bugs.launchpad.net/ubuntu/+sour ... +bug/96596

Please remind me if I do not reply you after one week. Thanks