https://bugs.freedesktop.org/show_bug.cgi?id=76054
--- Comment #1 from Michel Dänzer michel@daenzer.net --- The functions and message you're referencing are from the radeonsi driver, which doesn't support your GPU. Please make sure you don't have an environment variable VDPAU_DRIVER=radeonsi or something along those lines.
If that doesn't help, please attach a gdb backtrace of the crash if possible, but at least the full terminal output you're referring to.