glxgears: Error: couldn't get an RGB, Double-buffered visual

[pipodnmy]

hi,
i am getting this error and have no idea how to fix it.. googling around did not give me much answers? any openGL experts out there?
this is the error from an xterminal:
$ glxgears -v
Window x=0, y=0, width=300, height=300
glxgears: Error: couldn't get an RGB, Double-buffered visual.

glxinfo works fine:
glxinfo -v -v
name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.2
server glx extensions:
GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_EXT_import_context, GLX_OML_swap_method, GLX_SGI_make_current_read,
GLX_SGIS_multisample, GLX_SGIX_fbconfig
client glx vendor string: SGI
client glx version string: 1.4
client glx extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_allocate_memory,
GLX_MESA_swap_control, GLX_MESA_swap_frame_usage, GLX_OML_swap_method,
GLX_OML_sync_control, GLX_SGI_make_current_read, GLX_SGI_swap_control,
GLX_SGI_video_sync, GLX_SGIS_multisample, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group
GLX extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_allocate_memory,
GLX_SGIS_multisample
OpenGL vendor string: Tungsten Graphics, Inc
OpenGL renderer string: Mesa DRI Intel(R) 852GM/855GM 20040331 x86/MMX/SSE2
OpenGL version string: 1.2 Mesa 6.1
OpenGL extensions:
GL_ARB_multitexture, GL_ARB_texture_border_clamp,
GL_ARB_texture_compression, GL_ARB_texture_env_add,
GL_ARB_texture_env_combine, GL_ARB_texture_env_dot3,
GL_ARB_texture_mirrored_repeat, GL_ARB_transpose_matrix,
GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, GL_ARB_window_pos,
GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color, GL_EXT_blend_func_separate,
GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_clip_volume_hint,
GL_EXT_compiled_vertex_array, GL_EXT_draw_range_elements,
GL_EXT_fog_coord, GL_EXT_multi_draw_arrays, GL_EXT_packed_pixels,
GL_EXT_rescale_normal, GL_EXT_secondary_color,
GL_EXT_separate_specular_color, GL_EXT_stencil_wrap,
GL_EXT_texture_env_add, GL_EXT_texture_env_combine,
GL_EXT_texture_filter_anisotropic, GL_IBM_texture_mirrored_repeat,
GL_MESA_ycbcr_texture, GL_MESA_window_pos, GL_NV_texgen_reflection,
GL_SGIS_generate_mipmap
glu version: 1.3
glu extensions:
GLU_EXT_nurbs_tessellator, GLU_EXT_object_space_tess

Visual ID: 22 depth=24 class=TrueColor
bufferSize=32 level=0 renderType=rgba doubleBuffer=1 stereo=0
rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
auxBuffers=0 depthSize=0 stencilSize=0
accum: redSize=0 greenSize=0 blueSize=0 alphaSize=0
multiSample=0 multiSampleBuffers=0
visualCaveat=None
Opaque.

as you can see glxinfo seems to be able the find a double buffered, etc, etc display that glxgears complains about, so i am confused what is going on.
i can post the xorg.conf and the log but seems a bit redundant (no errors in the logs)..let me know if those would help, thanks..

[evader]

Post xorg config
_________________
//Take this barrel and end this struggle

[pipodnmy]

sure, here is a link:
http://alien.dowling.edu/~petko/my_how-tos/700m/xorg.conf

hope that helps,

[pipodnmy]

just by chance, i took at the "Group 0" from the config file (/etc/X11/xorg.conf) and glxgears works now.