(In reply to comment #1)
> 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.

I am so Sorry. It was actually my mistake. I had the environment variable
VDPAU_DRIVER=radeonsi. After I unset it, the crash was over.