With 12.04 LTS release, Ubuntu offers an option to upgrade to newer kernel versions. Full info is available at https://wiki.ubuntu.com/Kernel/LTSEnablementStack. I decided to rock Linux 3.8 kernel by doing
The above works for both Ubuntu 12.04 and Linux Mint 13. Note that since Raring is 13.04, this kernel upgrade might break future upgrade from 12.04 to 12.10, since 12.10 is older than 13.04.