I'm using x server git (ce36ae526d88d20ff67cd6cb429fb06f48d231f6) + nouveau git (85536023ed7050632d121299ab99382e096b9984). I have one gtk2 app in autostart - gkrellm. It crash my sever with non-render capable (under nouveau) TNT2-class card. I can reproduce this crash with option "EXANoComposite" "1" too, on nv11. Bare X + gqview = same crash. Details will follow.
Created attachment 16277 [details]
Created attachment 16278 [details]
log (with NoTrapSignals enabled)
Created attachment 16279 [details]
Created attachment 16280 [details]
xorg.0.log without NoTrapSignals
Fixed, thanks for the report.