I attach the glxinfo output. Regards,
Martin
name of display: :0 display: :0 screen: 0 direct rendering: Yes server glx vendor string: SGI server glx version string: 1.4 server glx extensions: GLX_ARB_create_context, GLX_ARB_create_context_profile, GLX_ARB_fbconfig_float, GLX_ARB_framebuffer_sRGB, GLX_ARB_multisample, GLX_EXT_create_context_es2_profile, GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, GLX_OML_swap_method, GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_SGI_swap_control client glx vendor string: Mesa Project and SGI client glx version string: 1.4 client glx extensions: GLX_ARB_create_context, GLX_ARB_create_context_profile, GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_buffer_age, GLX_EXT_create_context_es2_profile, GLX_EXT_fbconfig_packed_float, GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync GLX version: 1.4 GLX extensions: GLX_ARB_create_context, GLX_ARB_create_context_profile, GLX_ARB_fbconfig_float, GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_create_context_es2_profile, GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) Ironlake Mobile OpenGL version string: 2.1 Mesa 10.2.5 OpenGL shading language version string: 1.20 OpenGL extensions: GL_3DFX_texture_compression_FXT1, GL_AMD_performance_monitor, GL_AMD_seamless_cubemap_per_texture, GL_AMD_shader_trinary_minmax, GL_ANGLE_texture_compression_dxt3, GL_ANGLE_texture_compression_dxt5, GL_APPLE_object_purgeable, GL_APPLE_packed_pixels, GL_APPLE_vertex_array_object, GL_ARB_ES2_compatibility, GL_ARB_buffer_storage, GL_ARB_clear_buffer_object, GL_ARB_color_buffer_float, GL_ARB_copy_buffer, GL_ARB_debug_output, GL_ARB_depth_buffer_float, GL_ARB_depth_clamp, GL_ARB_depth_texture, GL_ARB_draw_buffers, GL_ARB_draw_elements_base_vertex, GL_ARB_draw_instanced, GL_ARB_explicit_attrib_location, GL_ARB_fragment_coord_conventions, GL_ARB_fragment_program, GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader, GL_ARB_framebuffer_object, GL_ARB_framebuffer_sRGB, GL_ARB_get_program_binary, GL_ARB_half_float_pixel, GL_ARB_half_float_vertex, GL_ARB_instanced_arrays, GL_ARB_internalformat_query, GL_ARB_invalidate_subdata, GL_ARB_map_buffer_alignment, GL_ARB_map_buffer_range, GL_ARB_multi_bind, GL_ARB_multisample, GL_ARB_multitexture, GL_ARB_occlusion_query, GL_ARB_occlusion_query2, GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, GL_ARB_point_sprite, GL_ARB_provoking_vertex, GL_ARB_robustness, GL_ARB_sampler_objects, GL_ARB_seamless_cube_map, GL_ARB_separate_shader_objects, GL_ARB_shader_bit_encoding, GL_ARB_shader_objects, GL_ARB_shader_texture_lod, GL_ARB_shading_language_100, GL_ARB_shadow, GL_ARB_sync, GL_ARB_texture_border_clamp, GL_ARB_texture_compression, GL_ARB_texture_compression_rgtc, GL_ARB_texture_cube_map, GL_ARB_texture_env_add, GL_ARB_texture_env_combine, GL_ARB_texture_env_crossbar, GL_ARB_texture_env_dot3, GL_ARB_texture_float, GL_ARB_texture_mirror_clamp_to_edge, GL_ARB_texture_mirrored_repeat, GL_ARB_texture_non_power_of_two, GL_ARB_texture_query_lod, GL_ARB_texture_rectangle, GL_ARB_texture_rg, GL_ARB_texture_rgb10_a2ui, GL_ARB_texture_storage, GL_ARB_texture_swizzle, GL_ARB_transpose_matrix, GL_ARB_vertex_array_bgra, GL_ARB_vertex_array_object, GL_ARB_vertex_attrib_binding, GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, GL_ARB_vertex_shader, GL_ARB_vertex_type_10f_11f_11f_rev, GL_ARB_vertex_type_2_10_10_10_rev, GL_ARB_window_pos, GL_ATI_blend_equation_separate, GL_ATI_draw_buffers, GL_ATI_envmap_bumpmap, GL_ATI_separate_stencil, GL_ATI_texture_env_combine3, GL_ATI_texture_float, GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color, GL_EXT_blend_equation_separate, GL_EXT_blend_func_separate, GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_compiled_vertex_array, GL_EXT_copy_texture, GL_EXT_draw_buffers2, GL_EXT_draw_instanced, GL_EXT_draw_range_elements, GL_EXT_fog_coord, GL_EXT_framebuffer_blit, GL_EXT_framebuffer_object, GL_EXT_framebuffer_sRGB, GL_EXT_gpu_program_parameters, GL_EXT_multi_draw_arrays, GL_EXT_packed_depth_stencil, GL_EXT_packed_float, GL_EXT_packed_pixels, GL_EXT_pixel_buffer_object, GL_EXT_point_parameters, GL_EXT_polygon_offset, GL_EXT_provoking_vertex, GL_EXT_rescale_normal, GL_EXT_secondary_color, GL_EXT_separate_specular_color, GL_EXT_shadow_funcs, GL_EXT_stencil_two_side, GL_EXT_stencil_wrap, GL_EXT_subtexture, GL_EXT_texture, GL_EXT_texture3D, GL_EXT_texture_array, GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_rgtc, GL_EXT_texture_cube_map, GL_EXT_texture_edge_clamp, GL_EXT_texture_env_add, GL_EXT_texture_env_combine, GL_EXT_texture_env_dot3, GL_EXT_texture_filter_anisotropic, GL_EXT_texture_integer, GL_EXT_texture_lod_bias, GL_EXT_texture_object, GL_EXT_texture_rectangle, GL_EXT_texture_sRGB, GL_EXT_texture_sRGB_decode, GL_EXT_texture_shared_exponent, GL_EXT_texture_snorm, GL_EXT_texture_swizzle, GL_EXT_timer_query, GL_EXT_vertex_array, GL_EXT_vertex_array_bgra, GL_IBM_multimode_draw_arrays, GL_IBM_rasterpos_clip, GL_IBM_texture_mirrored_repeat, GL_INGR_blend_func_separate, GL_INTEL_performance_query, GL_KHR_debug, GL_MESA_pack_invert, GL_MESA_texture_signed_rgba, GL_MESA_window_pos, GL_NV_blend_square, GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_light_max_exponent, GL_NV_packed_depth_stencil, GL_NV_primitive_restart, GL_NV_texgen_reflection, GL_NV_texture_env_combine4, GL_NV_texture_rectangle, GL_OES_EGL_image, GL_OES_read_format, GL_S3_s3tc, GL_SGIS_generate_mipmap, GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp, GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays OpenGL ES profile version string: OpenGL ES 2.0 Mesa 10.2.5 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 1.0.16 OpenGL ES profile extensions: GL_ANGLE_texture_compression_dxt3, GL_ANGLE_texture_compression_dxt5, GL_APPLE_texture_max_level, GL_EXT_blend_minmax, GL_EXT_discard_framebuffer, GL_EXT_map_buffer_range, GL_EXT_multi_draw_arrays, GL_EXT_read_format_bgra, GL_EXT_separate_shader_objects, GL_EXT_texture_compression_dxt1, GL_EXT_texture_filter_anisotropic, GL_EXT_texture_format_BGRA8888, GL_EXT_texture_rg, GL_EXT_texture_type_2_10_10_10_REV, GL_EXT_unpack_subimage, GL_INTEL_performance_query, GL_NV_draw_buffers, GL_NV_fbo_color_attachments, GL_NV_read_buffer, GL_OES_EGL_image, GL_OES_EGL_image_external, GL_OES_compressed_ETC1_RGB8_texture, GL_OES_depth24, GL_OES_depth_texture, GL_OES_element_index_uint, GL_OES_fbo_render_mipmap, GL_OES_get_program_binary, GL_OES_mapbuffer, GL_OES_packed_depth_stencil, GL_OES_rgb8_rgba8, GL_OES_standard_derivatives, GL_OES_stencil8, GL_OES_surfaceless_context, GL_OES_texture_3D, GL_OES_texture_npot, GL_OES_vertex_array_object 12 GLX Visuals visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav id dep cl sp sz l ci b ro r g b a F gb bf th cl r g b a ns b eat ---------------------------------------------------------------------------- 0x021 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x022 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x080 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x081 24 tc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x082 24 tc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x083 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow 0x084 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x085 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x086 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x087 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x088 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow 0x067 32 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 24 GLXFBConfigs: visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav id dep cl sp sz l ci b ro r g b a F gb bf th cl r g b a ns b eat ---------------------------------------------------------------------------- 0x068 0 tc 0 16 0 r y . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None 0x069 0 tc 0 16 0 r . . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None 0x06a 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x06b 0 tc 0 16 0 r . . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x06c 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x06d 24 tc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x06e 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x06f 24 tc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x070 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x071 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 16 16 16 0 0 0 Slow 0x072 32 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x073 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow 0x074 0 dc 0 16 0 r y . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None 0x075 0 dc 0 16 0 r . . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None 0x076 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x077 0 dc 0 16 0 r . . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x078 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x079 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x07a 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x07b 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x07c 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x07d 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 16 16 16 0 0 0 Slow 0x07e 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x07f 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow