I have T430s laptop for couple month with intel graphics and was trying to cure freezes right from the first ubuntu install. Solution was weird, but the following helped me: I've gone to BIOS and disabled "CPU Power Management". On kernel 3.7.1 freezes disappeared for me only after this. However, power consumption is good and CPU frequencies are changed according to load.
I have T430s laptop for couple month with intel graphics and was trying to cure freezes right from the first ubuntu install. Solution was weird, but the following helped me: I've gone to BIOS and disabled "CPU Power Management". On kernel 3.7.1 freezes disappeared for me only after this. However, power consumption is good and CPU frequencies are changed according to load.