Hi bananafish!. Who am I to disagree with majority opinion
You will be whitelisted momentarily, and added to the roster of questionable denizens of this scurrilous place. This could go in a couple of places, but I'm going to drop it in the OpenGL forum, and point the CodeXL people at it there.
Good luck, and thanks for the sense of humor about our little walled garden.
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I got that SIGPIPE error too. I think it have something that it pick up libGL.so from mesa. IIRC removing link to mesa version of libGL.so solved this for me.
I've isolated the change which was causing the problems. gl_Position is initialized as vec4(0,0,0,0) while it used to be initialized as vec4(0,0,0,1). As a result, unset w coords caused all vertices to be divided by zero. The nVIDIA driver still inits to vec4(0,0,0,1) but the Intel and AMD Omega drivers so far init to vec4(0,0,0,0).
A changelog would still be great in the future.