So the theory that he was murdered has been pretty much debunked?
Looking that way; there was a notorious note to his "friend" in the pen that allegedly accompanied his body. The content of his suicide note has been mainly kept underwraps but that's the rumor as to why. Reading on his time in prison, he was a "regular" inmate and not a target I initially assumed he would be (other inmates would love the notch on their belts, etc.); clicked up, new prison tats, gang fights, fights for dominance in his cell, etc. He may have hit that mental wall. When keeping it real goes too far etc. (Chapelle is a wise man).