Starting program: /usr/bin/glxgears [Thread debugging using libthread_db enabled] [New Thread -1214519616 (LWP 21059)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1214519616 (LWP 21059)] 0xb76b40b5 in intel_render_quad_strip_verts () from /usr/lib/dri/i915_dri.so (gdb) bt #0 0xb76b40b5 in intel_render_quad_strip_verts () from /usr/lib/dri/i915_dri.so #1 0xb77c25e4 in run_render () from /usr/lib/dri/i915_dri.so #2 0xb779148f in _tnl_run_pipeline () from /usr/lib/dri/i915_dri.so #3 0xb769c275 in intelRunPipeline () from /usr/lib/dri/i915_dri.so #4 0xb779dfe8 in _tnl_playback_vertex_list () from /usr/lib/dri/i915_dri.so #5 0xb76cdb5e in execute_list () from /usr/lib/dri/i915_dri.so #6 0xb76d045f in _mesa_CallList () from /usr/lib/dri/i915_dri.so #7 0xb7782970 in neutral_CallList () from /usr/lib/dri/i915_dri.so #8 0x0804a3ce in do_draw () #9 0x0804adf3 in main ()