I've had quite a lot of GPU panics lately, and after asking about it here and in other places, people told me that it is a problem with many macbooks from mid 2010. I've also heard that this happens when the mac switches from the internal GPU to the external, so I unchecked the 'automatic graphics switching" box in my energy settings. Still, the problem remains.
What I find so annoying is that the crashes are so unpredictable. I'm often using my mac for hours at a time, doing quite a bit of GPU intensive stuff like watching HD video. Because of my visual impairment, I'm also using the zoom feature, which I imagine also uses the GPU. But I can't see any pattern in it. What exactly triggers these problems, and are there ways to avoid crashes?