Well, I found the render window and surely enough, it happens. Confirmed. I'll note that while redrawing in regular Xorg, it freshes its texture A LOT so it could very well be overwehlming xserver-xgl.
** Changed in: xserver-xgl (Ubuntu) Status: Needs Info => Confirmed -- [apport] Xgl crashed Using Blender with SIGSEGV https://launchpad.net/bugs/86230 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs