DMX question

All-
I believe it's more a DMX-related question than Chromium but the list 
appears to me a little more alive than the DMX one.

I am trying to get the binaries VisIt1.8.0  to work on our wall display 5x3.
Each node runs FC7 and CR-1.9 (recompiled from sources). The video card 
is GeForce 8800 GT with NVIDIA driver 171.05 (see attached glxinfo)
# rpm -qa | grep dmx
libdmx-1.0.2-3.1
xorg-x11-server-Xdmx-1.3.0.0-16.fc7

When VisIt is started on the wall display , the GUI Main window is not 
displayed, only one viz window show sup.
The problem occurs whether or not Chromium is used, which makes me think 
that there is a problem with DMX libs (?)
Command to start Xdmx:
/usr/bin/Xdmx :1 +xinerama -configfile /etc/wall/noloss -ac -br &
Error when VisIt is started:
(**) dmx: dmxErrorHandler: BadDrawable (invalid Pixmap or Window parameter)
(**) dmx:                  Major opcode: 62 (X_CopyArea)
(**) dmx:                  ResourceID:   0x601073
(**) dmx:                  Failed serial number:  24723
(**) dmx:                  Current serial number: 24750
Everything works fine on individual nodes (bot window are display 
GUI+viz window)

Any insight why it doesn't work? Do I need to recompile dmx from source 
and if so, what host.def did you use?
Thank you for any insight/pointers/contact.

JC

-----------------
name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4
server glx extensions:
     GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
     GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
     GLX_EXT_texture_from_pixmap, GLX_ARB_multisample, GLX_NV_float_buffer,
     GLX_ARB_fbconfig_float, GLX_EXT_framebuffer_sRGB
client glx vendor string: NVIDIA Corporation
client glx version string: 1.4

client glx version string: 1.4
client glx extensions:
     GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_visual_info,
     GLX_EXT_visual_rating, GLX_EXT_import_context, GLX_SGI_video_sync,
     GLX_NV_swap_group, GLX_NV_video_out, GLX_SGIX_fbconfig, 
GLX_SGIX_pbuffer,
     GLX_SGI_swap_control, GLX_NV_float_buffer, GLX_ARB_fbconfig_float,
     GLX_EXT_fbconfig_packed_float, GLX_EXT_texture_from_pixmap,
     GLX_EXT_framebuffer_sRGB
GLX version: 1.3
GLX extensions:
     GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
     GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
     GLX_EXT_texture_from_pixmap, GLX_ARB_multisample, GLX_NV_float_buffer,
     GLX_ARB_fbconfig_float, GLX_EXT_framebuffer_sRGB,
     GLX_ARB_get_proc_address
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 8800 GT/PCI/SSE2
OpenGL version string: 2.1.2 NVIDIA 171.05
OpenGL extensions:
     GL_ARB_color_buffer_float, GL_ARB_depth_texture, GL_ARB_draw_buffers,
     GL_ARB_fragment_program, GL_ARB_fragment_program_shadow,
     GL_ARB_fragment_shader, GL_ARB_half_float_pixel, GL_ARB_imaging,
     GL_ARB_multisample, GL_ARB_multitexture, GL_ARB_occlusion_query,
     GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, 
GL_ARB_point_sprite,
     GL_ARB_shadow, GL_ARB_shader_objects, GL_ARB_shading_language_100,
     GL_ARB_texture_border_clamp, GL_ARB_texture_compression,
     GL_ARB_texture_cube_map, GL_ARB_texture_env_add,
     GL_ARB_texture_env_combine, GL_ARB_texture_env_dot3, 
GL_ARB_texture_float,
     GL_ARB_texture_mirrored_repeat, GL_ARB_texture_non_power_of_two,
     GL_ARB_texture_rectangle, GL_ARB_transpose_matrix,
     GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, 
GL_ARB_vertex_shader,
     GL_ARB_window_pos, GL_ATI_draw_buffers, GL_ATI_texture_float,
     GL_ATI_texture_mirror_once, GL_S3_s3tc, GL_EXT_texture_env_add,
     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_Cg_shader, GL_EXT_bindable_uniform, GL_EXT_depth_bounds_test,
     GL_EXT_draw_buffers2, GL_EXT_draw_instanced, 
GL_EXT_draw_range_elements,
     GL_EXT_fog_coord, GL_EXT_framebuffer_blit, 
GL_EXT_framebuffer_multisample,
     GL_EXT_framebuffer_object, GL_EXTX_framebuffer_mixed_formats,
     GL_EXT_framebuffer_sRGB, GL_EXT_geometry_shader4,
     GL_EXT_gpu_program_parameters, GL_EXT_gpu_shader4,
     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_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_texture3D,
     GL_EXT_texture_array, GL_EXT_texture_buffer_object,
     GL_EXT_texture_compression_latc, GL_EXT_texture_compression_rgtc,
     GL_EXT_texture_compression_s3tc, GL_EXT_texture_cube_map,
     GL_EXT_texture_edge_clamp, GL_EXT_texture_env_combine,
     GL_EXT_texture_env_dot3, GL_EXT_texture_filter_anisotropic,
     GL_EXT_texture_integer, GL_EXT_texture_lod, GL_EXT_texture_lod_bias,
     GL_EXT_texture_mirror_clamp, GL_EXT_texture_object, 
GL_EXT_texture_sRGB,
     GL_EXT_texture_shared_exponent, GL_EXT_timer_query, 
GL_EXT_vertex_array,
     GL_IBM_rasterpos_clip, GL_IBM_texture_mirrored_repeat,
     GL_KTX_buffer_region, GL_NV_blend_square, GL_NV_copy_depth_to_color,
     GL_NV_depth_buffer_float, GL_NV_conditional_render, GL_NV_depth_clamp,
     GL_NV_fence, GL_NV_float_buffer, GL_NV_fog_distance,
     GL_NV_fragment_program, GL_NV_fragment_program_option,
     GL_NV_fragment_program2, GL_NV_framebuffer_multisample_coverage,
     GL_NV_geometry_shader4, GL_NV_gpu_program4, GL_NV_half_float,
     GL_NV_light_max_exponent, GL_NV_multisample_coverage,
     GL_NV_multisample_filter_hint, GL_NV_occlusion_query,
     GL_NV_packed_depth_stencil, GL_NV_parameter_buffer_object,
     GL_NV_pixel_data_range, GL_NV_point_sprite, GL_NV_primitive_restart,
     GL_NV_register_combiners, GL_NV_register_combiners2,
     GL_NV_texgen_reflection, GL_NV_texture_compression_vtc,
     GL_NV_texture_env_combine4, GL_NV_texture_expand_normal,
     GL_NV_texture_rectangle, GL_NV_texture_shader, GL_NV_texture_shader2,
     GL_NV_texture_shader3, GL_NV_transform_feedback, 
GL_NV_vertex_array_range,
     GL_NV_vertex_array_range2, GL_NV_vertex_program, 
GL_NV_vertex_program1_1,
     GL_NV_vertex_program2, GL_NV_vertex_program2_option,
     GL_NV_vertex_program3, GL_NVX_conditional_render, 
GL_SGIS_generate_mipmap,
     GL_SGIS_texture_lod, GL_SGIX_depth_texture, GL_SGIX_shadow,
     GL_SUN_slice_accum



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