Try with the latest precise kernel (-18), and if it isn't better, try a mainline kernel from here:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3-rc6-precise/
Try with the latest precise kernel (-18), and if it isn't better, try a mainline kernel from here:
http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.3-rc6- precise/