LinuxQuestions.org - Radeon, X crashes occasionally

My video card is ATI RS485 Radeon Xpress 200M, running up-to-date -current. The X crashes form occasionally. From dmesg, I can see something these:

Code:

[drm:r300_emit_3d_load_vbpntr] *ERROR* Offset failed range check (k=0 i=2) while processing 3D_LOAD_VBPNTR packet.

[drm:r300_emit_packet3] *ERROR* r300_emit_raw_packet3 failed

[drm:r300_do_cp_cmdbuf] *ERROR* r300_emit_packet3 failed

I googled the error message but all the answers are in year 2006 and I don't think they will apply to current drivers. Does anyone have the same issue? Or have any idea about this?