Re: ati drivers
You won't break your laptop.
My understanding of hybrid graphics on Linux is that you can still install the ATI driver and use your ATI card 100% of the time (like what everyone did before hybrid graphics were invented) or you can choose not to install that driver and just use the Intel card 100% of the time. Those are easy. The only difficult thing is getting the hybrid graphics to switch between Intel and ATI to save that small amount of power.
If you don't think you'll need the extra battery life from being able to fall back to Intel graphics, then feel free to just install the ATI driver from Software Sources (Ubuntu 12.10: Ubuntu Software Center > Edit menu > Software Sources) or Additional Drivers (Ubuntu 12.04: type Additional Drivers into the Dash). If you are not offered the ATI driver from those places your card is a little too new to be automatically detected by Ubuntu, but you can download the official ATI driver from the AMD website.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.