Just had a horrible chance I dropped the ball on ,it killed the server and outputs couldn't even be reached on my card. I restarted LightDM to only have it fail and lose the log of the crash, but Steam was failing to start any games also, even starting steam took a few tries. I'm trying to reproduce. The only error I got out of I screwed up the log files was "Active IB in BO." or something of that nature, and it was printed in the tty2 terminal when lightdm died. That's all I could scroung out of it, but I'm trying to reproduce now, that error could provide all the information needed if I could have gotten the logs from it.