That's all I got from the core dump: (gdb) backtrace #0 0x00007f10b89263d9 in ?? () from /usr/lib64/dri/radeonsi_dri.so #1 0x00007f10b8926581 in ?? () from /usr/lib64/dri/radeonsi_dri.so #2 0x00007f10b8683fa2 in ?? () from /usr/lib64/dri/radeonsi_dri.so #3 0x00007f10b86859c1 in ?? () from /usr/lib64/dri/radeonsi_dri.so #4 0x00007f10b81a4d94 in ?? () from /usr/lib64/dri/radeonsi_dri.so #5 0x00007f10b819eea7 in ?? () from /usr/lib64/dri/radeonsi_dri.so #6 0x00007f10d484c777 in start_thread () from /lib64/libc.so.6 #7 0x00007f10d48d6c70 in clone3 () from /lib64/libc.so.6