(In reply to comment #29)
> radeon: The kernel rejected CS, see dmesg for more information.
> 
> My system is 64bits and big-endian. It is means that the radeinsi driver
> send a error commond using ring?  It need big-endian to little-endian?

That shouldn't be necessary, the kernel sets up the hardware to byte-swap the
ring/indirect buffer commands on the fly.

Basically, you need to find out why the radeon_cs_ioctl() function in the
kernel returns a non-0 value. Enabling DRM debugging output via
/sys/module/drm/parameters/debug may help, or you may have to add more
debugging printks to narrow down where it's coming from.