Compiz will not start when using dual monitor (spanning)

[The Recorder]

Binary package hint: gnome-control-center

LUCID BETA 2, UP TO DATE AS OF TIME OF THIS SUBMISSION

DATA FOLLOWS
AS YOU CAN SEE BY THE LAST COMMAND (LAST SEVERAL LINES OF DATA), EVEN WHEN CHECKS ARE SKIPPED, COMPIZ WILL NOT START

arthur@arthur-desktop:~$ ./compiz-check

Gathering information about your system...

 Distribution: Ubuntu 10.04
 Desktop environment: GNOME
 Graphics chip: ATI Technologies Inc RV410 [Radeon X700 (PCIE)]
 Driver in use: radeon
 Rendering method: AIGLX

Checking if it's possible to run Compiz on your system...

 Checking for texture_from_pixmap... [ OK ]
 Checking for non power of two support... [ OK ]
 Checking for composite extension... [ OK ]
 Checking for FBConfig... [ OK ]
 Checking for hardware/setup problems... [ OK ]

*************

arthur@arthur-desktop:~$ xrandr | grep '*'
   1024x768 75.1* 75.0 70.1 60.0
   1024x768 75.1* 70.1 60.0

*************

arthur@arthur-desktop:~$ xdpyinfo | grep 'dimensions:'
  dimensions: 2048x768 pixels (542x203 millimeters)

*************

arthur@arthur-desktop:~$ glxinfo
name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
    GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap,
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer,
    GLX_OML_swap_method, GLX_SGI_make_current_read, GLX_SGI_swap_control,
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
    GLX_SGIX_visual_select_group
client glx vendor string: Mesa Project and 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_copy_sub_buffer, 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_EXT_texture_from_pixmap
GLX version: 1.4
GLX extensions:
    GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer,
    GLX_MESA_swap_frame_usage, GLX_OML_swap_method, GLX_SGI_make_current_read,
    GLX_SGI_video_sync, GLX_SGIS_multisample, GLX_SGIX_fbconfig,
    GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group,
    GLX_EXT_texture_from_pixmap
OpenGL vendor string: DRI R300 Project
OpenGL renderer string: Mesa DRI R300 (RV410 5E4D) 20090101 x86/MMX/SSE2 TCL DRI2
OpenGL version string: 1.5 Mesa 7.7.1
OpenGL extensions:
    GL_EXT_compiled_vertex_array, GL_EXT_texture_env_add,
    GL_ARB_depth_texture, GL_ARB_draw_buffers, GL_ARB_fragment_program,
    GL_ARB_imaging, GL_ARB_multisample, GL_ARB_multitexture,
    GL_ARB_occlusion_query, GL_ARB_point_parameters, GL_ARB_provoking_vertex,
    GL_ARB_shadow, GL_ARB_shadow_ambient, 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_crossbar, GL_ARB_texture_env_dot3,
    GL_MESAX_texture_float, GL_ARB_texture_mirrored_repeat,
    GL_ARB_texture_rectangle, GL_ARB_transpose_matrix,
    GL_ARB_vertex_array_bgra, 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_equation_separate,
    GL_EXT_blend_func_separate, GL_EXT_blend_logic_op, GL_EXT_blend_minmax,
    GL_EXT_blend_subtract, GL_EXT_convolution, GL_EXT_copy_texture,
    GL_EXT_draw_range_elements, GL_EXT_framebuffer_blit,
    GL_EXT_framebuffer_object, GL_EXT_fog_coord,
    GL_EXT_gpu_program_parameters, GL_EXT_histogram, GL_EXT_multi_draw_arrays,
    GL_EXT_packed_depth_stencil, GL_EXT_packed_pixels,
    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_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_lod_bias, GL_EXT_texture_mirror_clamp,
    GL_EXT_texture_object, GL_EXT_texture_rectangle, GL_EXT_texture_sRGB,
    GL_EXT_vertex_array, GL_EXT_vertex_array_bgra, GL_APPLE_packed_pixels,
    GL_ATI_blend_equation_separate, GL_ATI_texture_env_combine3,
    GL_ATI_texture_mirror_once, GL_ATI_separate_stencil,
    GL_IBM_multimode_draw_arrays, GL_IBM_rasterpos_clip,
    GL_IBM_texture_mirrored_repeat, GL_INGR_blend_func_separate,
    GL_MESA_pack_invert, GL_MESA_ycbcr_texture, GL_MESA_window_pos,
    GL_NV_blend_square, GL_NV_light_max_exponent, GL_NV_packed_depth_stencil,
    GL_NV_texture_rectangle, GL_NV_texgen_reflection, GL_NV_vertex_program,
    GL_OES_read_format, GL_SGI_color_matrix, GL_SGI_color_table,
    GL_SGIS_generate_mipmap, GL_SGIS_texture_border_clamp,
    GL_SGIS_texture_edge_clamp, GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays

64 GLX Visuals
   visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
 id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
0x21 24 tc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x22 24 dc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0xdc 24 tc 0 24 0 r . . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0xdd 24 tc 0 24 0 r . . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0xde 24 tc 0 24 0 r y . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0xdf 24 tc 0 24 0 r y . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0xe0 24 tc 0 24 0 r . . 8 8 8 0 0 16 0 0 0 0 0 0 0 None
0xe1 24 tc 0 24 0 r . . 8 8 8 0 0 16 0 16 16 16 0 0 0 Slow
0xe2 24 tc 0 24 0 r y . 8 8 8 0 0 16 0 0 0 0 0 0 0 None
0xe3 24 tc 0 24 0 r y . 8 8 8 0 0 16 0 16 16 16 0 0 0 Slow
0xe4 24 tc 0 24 0 r . . 8 8 8 0 0 24 0 0 0 0 0 0 0 None
0xe5 24 tc 0 24 0 r . . 8 8 8 0 0 24 0 16 16 16 0 0 0 Slow
0xe6 24 tc 0 24 0 r y . 8 8 8 0 0 24 0 0 0 0 0 0 0 None
0xe7 24 tc 0 24 0 r y . 8 8 8 0 0 24 0 16 16 16 0 0 0 Slow
0xe8 24 tc 0 24 0 r . . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0xe9 24 tc 0 24 0 r . . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0xea 24 tc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0xeb 24 tc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0xec 24 tc 0 32 0 r . . 8 8 8 8 0 0 0 0 0 0 0 0 0 None
0xed 24 tc 0 32 0 r . . 8 8 8 8 0 0 0 16 16 16 16 0 0 Slow
0xee 24 tc 0 32 0 r y . 8 8 8 8 0 0 0 0 0 0 0 0 0 None
0xef 24 tc 0 32 0 r y . 8 8 8 8 0 0 0 16 16 16 16 0 0 Slow
0xf0 24 tc 0 32 0 r . . 8 8 8 8 0 16 0 0 0 0 0 0 0 None
0xf1 24 tc 0 32 0 r . . 8 8 8 8 0 16 0 16 16 16 16 0 0 Slow
0xf2 24 tc 0 32 0 r y . 8 8 8 8 0 16 0 16 16 16 16 0 0 Slow
0xf3 24 tc 0 32 0 r . . 8 8 8 8 0 24 0 0 0 0 0 0 0 None
0xf4 24 tc 0 32 0 r . . 8 8 8 8 0 24 0 16 16 16 16 0 0 Slow
0xf5 24 tc 0 32 0 r y . 8 8 8 8 0 24 0 0 0 0 0 0 0 None
0xf6 24 tc 0 32 0 r y . 8 8 8 8 0 24 0 16 16 16 16 0 0 Slow
0xf7 24 tc 0 32 0 r . . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0xf8 24 tc 0 32 0 r . . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0xf9 24 tc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0xfa 24 dc 0 24 0 r . . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0xfb 24 dc 0 24 0 r . . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0xfc 24 dc 0 24 0 r y . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0xfd 24 dc 0 24 0 r y . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0xfe 24 dc 0 24 0 r . . 8 8 8 0 0 16 0 0 0 0 0 0 0 None
0xff 24 dc 0 24 0 r . . 8 8 8 0 0 16 0 16 16 16 0 0 0 Slow
0x100 24 dc 0 24 0 r y . 8 8 8 0 0 16 0 0 0 0 0 0 0 None
0x101 24 dc 0 24 0 r y . 8 8 8 0 0 16 0 16 16 16 0 0 0 Slow
0x102 24 dc 0 24 0 r . . 8 8 8 0 0 24 0 0 0 0 0 0 0 None
0x103 24 dc 0 24 0 r . . 8 8 8 0 0 24 0 16 16 16 0 0 0 Slow
0x104 24 dc 0 24 0 r y . 8 8 8 0 0 24 0 0 0 0 0 0 0 None
0x105 24 dc 0 24 0 r y . 8 8 8 0 0 24 0 16 16 16 0 0 0 Slow
0x106 24 dc 0 24 0 r . . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x107 24 dc 0 24 0 r . . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x108 24 dc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x109 24 dc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x10a 24 dc 0 32 0 r . . 8 8 8 8 0 0 0 0 0 0 0 0 0 None
0x10b 24 dc 0 32 0 r . . 8 8 8 8 0 0 0 16 16 16 16 0 0 Slow
0x10c 24 dc 0 32 0 r y . 8 8 8 8 0 0 0 0 0 0 0 0 0 None
0x10d 24 dc 0 32 0 r y . 8 8 8 8 0 0 0 16 16 16 16 0 0 Slow
0x10e 24 dc 0 32 0 r . . 8 8 8 8 0 16 0 0 0 0 0 0 0 None
0x10f 24 dc 0 32 0 r . . 8 8 8 8 0 16 0 16 16 16 16 0 0 Slow
0x110 24 dc 0 32 0 r y . 8 8 8 8 0 16 0 0 0 0 0 0 0 None
0x111 24 dc 0 32 0 r y . 8 8 8 8 0 16 0 16 16 16 16 0 0 Slow
0x112 24 dc 0 32 0 r . . 8 8 8 8 0 24 0 0 0 0 0 0 0 None
0x113 24 dc 0 32 0 r . . 8 8 8 8 0 24 0 16 16 16 16 0 0 Slow
0x114 24 dc 0 32 0 r y . 8 8 8 8 0 24 0 0 0 0 0 0 0 None
0x115 24 dc 0 32 0 r y . 8 8 8 8 0 24 0 16 16 16 16 0 0 Slow
0x116 24 dc 0 32 0 r . . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0x117 24 dc 0 32 0 r . . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0x118 24 dc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0x7b 32 tc 0 32 0 r y . 8 8 8 8 0 16 0 0 0 0 0 0 0 None

96 GLXFBConfigs:
   visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
 id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
0x7c 0 tc 0 16 0 r . . 5 6 5 0 0 0 0 0 0 0 0 0 0 None
0x7d 0 tc 0 16 0 r . . 5 6 5 0 0 0 0 16 16 16 0 0 0 Slow
0x7e 0 tc 0 16 0 r y . 5 6 5 0 0 0 0 0 0 0 0 0 0 None
0x7f 0 tc 0 16 0 r y . 5 6 5 0 0 0 0 16 16 16 0 0 0 Slow
0x80 0 tc 0 16 0 r . . 5 6 5 0 0 16 0 0 0 0 0 0 0 None
0x81 0 tc 0 16 0 r . . 5 6 5 0 0 16 0 16 16 16 0 0 0 Slow
0x82 0 tc 0 16 0 r y . 5 6 5 0 0 16 0 0 0 0 0 0 0 None
0x83 0 tc 0 16 0 r y . 5 6 5 0 0 16 0 16 16 16 0 0 0 Slow
0x84 0 tc 0 16 0 r . . 5 6 5 0 0 24 0 0 0 0 0 0 0 None
0x85 0 tc 0 16 0 r . . 5 6 5 0 0 24 0 16 16 16 0 0 0 Slow
0x86 0 tc 0 16 0 r y . 5 6 5 0 0 24 0 0 0 0 0 0 0 None
0x87 0 tc 0 16 0 r y . 5 6 5 0 0 24 0 16 16 16 0 0 0 Slow
0x88 0 tc 0 16 0 r . . 5 6 5 0 0 24 8 0 0 0 0 0 0 None
0x89 0 tc 0 16 0 r . . 5 6 5 0 0 24 8 16 16 16 0 0 0 Slow
0x8a 0 tc 0 16 0 r y . 5 6 5 0 0 24 8 0 0 0 0 0 0 None
0x8b 0 tc 0 16 0 r y . 5 6 5 0 0 24 8 16 16 16 0 0 0 Slow
0x8c 0 tc 0 24 0 r . . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0x8d 0 tc 0 24 0 r . . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0x8e 0 tc 0 24 0 r y . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0x8f 0 tc 0 24 0 r y . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0x90 0 tc 0 24 0 r . . 8 8 8 0 0 16 0 0 0 0 0 0 0 None
0x91 0 tc 0 24 0 r . . 8 8 8 0 0 16 0 16 16 16 0 0 0 Slow
0x92 0 tc 0 24 0 r y . 8 8 8 0 0 16 0 0 0 0 0 0 0 None
0x93 0 tc 0 24 0 r y . 8 8 8 0 0 16 0 16 16 16 0 0 0 Slow
0x94 0 tc 0 24 0 r . . 8 8 8 0 0 24 0 0 0 0 0 0 0 None
0x95 0 tc 0 24 0 r . . 8 8 8 0 0 24 0 16 16 16 0 0 0 Slow
0x96 0 tc 0 24 0 r y . 8 8 8 0 0 24 0 0 0 0 0 0 0 None
0x97 0 tc 0 24 0 r y . 8 8 8 0 0 24 0 16 16 16 0 0 0 Slow
0x98 0 tc 0 24 0 r . . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x99 0 tc 0 24 0 r . . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x9a 0 tc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0x9b 0 tc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0x9c 0 tc 0 32 0 r . . 8 8 8 8 0 0 0 0 0 0 0 0 0 None
0x9d 0 tc 0 32 0 r . . 8 8 8 8 0 0 0 16 16 16 16 0 0 Slow
0x9e 0 tc 0 32 0 r y . 8 8 8 8 0 0 0 0 0 0 0 0 0 None
0x9f 0 tc 0 32 0 r y . 8 8 8 8 0 0 0 16 16 16 16 0 0 Slow
0xa0 0 tc 0 32 0 r . . 8 8 8 8 0 16 0 0 0 0 0 0 0 None
0xa1 0 tc 0 32 0 r . . 8 8 8 8 0 16 0 16 16 16 16 0 0 Slow
0xa2 0 tc 0 32 0 r y . 8 8 8 8 0 16 0 0 0 0 0 0 0 None
0xa3 0 tc 0 32 0 r y . 8 8 8 8 0 16 0 16 16 16 16 0 0 Slow
0xa4 0 tc 0 32 0 r . . 8 8 8 8 0 24 0 0 0 0 0 0 0 None
0xa5 0 tc 0 32 0 r . . 8 8 8 8 0 24 0 16 16 16 16 0 0 Slow
0xa6 0 tc 0 32 0 r y . 8 8 8 8 0 24 0 0 0 0 0 0 0 None
0xa7 0 tc 0 32 0 r y . 8 8 8 8 0 24 0 16 16 16 16 0 0 Slow
0xa8 0 tc 0 32 0 r . . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0xa9 0 tc 0 32 0 r . . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0xaa 0 tc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0xab 0 tc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0xac 0 dc 0 16 0 r . . 5 6 5 0 0 0 0 0 0 0 0 0 0 None
0xad 0 dc 0 16 0 r . . 5 6 5 0 0 0 0 16 16 16 0 0 0 Slow
0xae 0 dc 0 16 0 r y . 5 6 5 0 0 0 0 0 0 0 0 0 0 None
0xaf 0 dc 0 16 0 r y . 5 6 5 0 0 0 0 16 16 16 0 0 0 Slow
0xb0 0 dc 0 16 0 r . . 5 6 5 0 0 16 0 0 0 0 0 0 0 None
0xb1 0 dc 0 16 0 r . . 5 6 5 0 0 16 0 16 16 16 0 0 0 Slow
0xb2 0 dc 0 16 0 r y . 5 6 5 0 0 16 0 0 0 0 0 0 0 None
0xb3 0 dc 0 16 0 r y . 5 6 5 0 0 16 0 16 16 16 0 0 0 Slow
0xb4 0 dc 0 16 0 r . . 5 6 5 0 0 24 0 0 0 0 0 0 0 None
0xb5 0 dc 0 16 0 r . . 5 6 5 0 0 24 0 16 16 16 0 0 0 Slow
0xb6 0 dc 0 16 0 r y . 5 6 5 0 0 24 0 0 0 0 0 0 0 None
0xb7 0 dc 0 16 0 r y . 5 6 5 0 0 24 0 16 16 16 0 0 0 Slow
0xb8 0 dc 0 16 0 r . . 5 6 5 0 0 24 8 0 0 0 0 0 0 None
0xb9 0 dc 0 16 0 r . . 5 6 5 0 0 24 8 16 16 16 0 0 0 Slow
0xba 0 dc 0 16 0 r y . 5 6 5 0 0 24 8 0 0 0 0 0 0 None
0xbb 0 dc 0 16 0 r y . 5 6 5 0 0 24 8 16 16 16 0 0 0 Slow
0xbc 0 dc 0 24 0 r . . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0xbd 0 dc 0 24 0 r . . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0xbe 0 dc 0 24 0 r y . 8 8 8 0 0 0 0 0 0 0 0 0 0 None
0xbf 0 dc 0 24 0 r y . 8 8 8 0 0 0 0 16 16 16 0 0 0 Slow
0xc0 0 dc 0 24 0 r . . 8 8 8 0 0 16 0 0 0 0 0 0 0 None
0xc1 0 dc 0 24 0 r . . 8 8 8 0 0 16 0 16 16 16 0 0 0 Slow
0xc2 0 dc 0 24 0 r y . 8 8 8 0 0 16 0 0 0 0 0 0 0 None
0xc3 0 dc 0 24 0 r y . 8 8 8 0 0 16 0 16 16 16 0 0 0 Slow
0xc4 0 dc 0 24 0 r . . 8 8 8 0 0 24 0 0 0 0 0 0 0 None
0xc5 0 dc 0 24 0 r . . 8 8 8 0 0 24 0 16 16 16 0 0 0 Slow
0xc6 0 dc 0 24 0 r y . 8 8 8 0 0 24 0 0 0 0 0 0 0 None
0xc7 0 dc 0 24 0 r y . 8 8 8 0 0 24 0 16 16 16 0 0 0 Slow
0xc8 0 dc 0 24 0 r . . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0xc9 0 dc 0 24 0 r . . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0xca 0 dc 0 24 0 r y . 8 8 8 0 0 24 8 0 0 0 0 0 0 None
0xcb 0 dc 0 24 0 r y . 8 8 8 0 0 24 8 16 16 16 0 0 0 Slow
0xcc 0 dc 0 32 0 r . . 8 8 8 8 0 0 0 0 0 0 0 0 0 None
0xcd 0 dc 0 32 0 r . . 8 8 8 8 0 0 0 16 16 16 16 0 0 Slow
0xce 0 dc 0 32 0 r y . 8 8 8 8 0 0 0 0 0 0 0 0 0 None
0xcf 0 dc 0 32 0 r y . 8 8 8 8 0 0 0 16 16 16 16 0 0 Slow
0xd0 0 dc 0 32 0 r . . 8 8 8 8 0 16 0 0 0 0 0 0 0 None
0xd1 0 dc 0 32 0 r . . 8 8 8 8 0 16 0 16 16 16 16 0 0 Slow
0xd2 0 dc 0 32 0 r y . 8 8 8 8 0 16 0 0 0 0 0 0 0 None
0xd3 0 dc 0 32 0 r y . 8 8 8 8 0 16 0 16 16 16 16 0 0 Slow
0xd4 0 dc 0 32 0 r . . 8 8 8 8 0 24 0 0 0 0 0 0 0 None
0xd5 0 dc 0 32 0 r . . 8 8 8 8 0 24 0 16 16 16 16 0 0 Slow
0xd6 0 dc 0 32 0 r y . 8 8 8 8 0 24 0 0 0 0 0 0 0 None
0xd7 0 dc 0 32 0 r y . 8 8 8 8 0 24 0 16 16 16 16 0 0 Slow
0xd8 0 dc 0 32 0 r . . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0xd9 0 dc 0 32 0 r . . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow
0xda 0 dc 0 32 0 r y . 8 8 8 8 0 24 8 0 0 0 0 0 0 None
0xdb 0 dc 0 32 0 r y . 8 8 8 8 0 24 8 16 16 16 16 0 0 Slow

************

arthur@arthur-desktop:~$ glxinfo -l | grep MAX_TEXTURE_SIZE
    GL_MAX_TEXTURE_SIZE = 2048

*************

arthur@arthur-desktop:~$ SKIP_CHECKS=yes compiz --replace &
[1] 2450
arthur@arthur-desktop:~$ compiz (core) - Warn: Exceeded max texture size

Launching fallback window manager

[Travis Watkins (amaranth)]

We've changed the check to >= max texture size instead of > max texture size to fix bug 428769. There is no way to allow your system to work and prevent that one from breaking since drivers apparently handle this differently.

[The Recorder (arthurbm)]

I'm a little confused. My 2048x 768 setup has worked in Ubuntu for at least the last couple of years, and worked until the Lucid - Beta 2 updates. The drivers being used now is the same driver that was used before the Beta 2 release. Please explain further. This refusal to fix makes no sense to me, and it means that anyone wishing to use a dual screen setup of this size (1024x768 + 1024x0, the largest possibbe and probably most used setup of dual-monitors), and utilize compiz, must change to a different distro (or at a minimum, back to Karmic).

Thank you

[Travis Watkins (amaranth)]

Someone else has a 2048xwhatever resolution and their max texture size is 2048 just like yours but on their system running complz results in unusable screen corruption. Given the choice between someone not being able to use their computer at all and someone not being able to use compiz we've chosen the second option. That is why this is Won't Fix.

[The Recorder (arthurbm)]

Bug 428769 is suppose to fix compiz so that it can run on a 2048x1152 monitor. People had no problem running lucid on this size monitor if they used Metacity. So you above comment, "Given the choice between someone not being able to use their computer at all and someone not being able to use compiz we've chosen the second option," holds no credence.

And, if the bug is fixed, it should also fix my problem. Iim using the same Intel board that the Bug 428769 user is using - So, this is not a driver issue. Actually, I have doubts that you have fixed the problem - There are no comments, after the change, stating such,

[The Recorder (arthurbm)]

Here is the problem:

https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/555641

[Travis Watkins (amaranth)]

The fix for bug 428769 was to make compiz stop trying to run in this situation, not to make it work correctly (that'd have to be done in the driver).

[The Recorder (arthurbm)]

Thought that you would be interested to know that my setup works perfect in Kubuntu (Just installed next to GNOME). Compiz (and their compositor) started with no hitches on my dual-monitor setup. Go figure... Perhaps their guys can tell you how they solved the problem.

[Travis Watkins (amaranth)]

Ok, I see where the misunderstanding is now. Your hardware supports running compiz in this configuration, sure. Someone with an almost identical setup gets an unusable system when compiz starts. To fix his problem we also had to make it so compiz will refuse to run on your system too.

[StarWorm (sshishov-sshishov)]

To tell in truth I have the same situation. I was able to use compiz and visual effects during Interpid, Jaunty and Karmic use. And after distro-upgrade I was completely surprised that compiz had not started at all with the following error message: compiz (core) - Warn: Exceeded max texture size

I have the following configuration of my dual screen system:

sshishov@n101664:~$ xrandr -q | grep -Pi '(screen|\*|-0)'
Screen 0: minimum 320 x 200, current 2048 x 1280, maximum 4096 x 4096
VGA-0 connected 1024x1280+1024+0 left (normal left inverted right x axis y axis) 376mm x 301mm
   1280x1024 60.0 + 75.0*
DVI-0 connected 1024x1280+0+0 left (normal left inverted right x axis y axis) 376mm x 301mm
   1280x1024 60.0 + 75.0*

As I understand properly you have chosen the best solution between users who cannot work with compiz using exactly 2048 resolution in one dimension and us who can do it and really need in it. In this case I wonder why did you make this choice? If mentioned users cannot use compiz onto their computers then I suppose they should use either metacity as window-decorator or smaller resolution. Why should we suffer of their problems?

If I'm mistaken please correct me and explain where is my omission. Thanks!

[The Recorder (arthurbm)]

Actually, I had a problem with my graphics card, and had to buy a new one. This time I bought an nvdia card, and I no longer have the compaz problem. Nothing I can say except that I still think that the "fix" that ubuntu made was entirely the wrong thing thing to do.

[StarWorm (sshishov-sshishov)]

I completely agree that mentioned issue doesn't affect every graphics card. But my job's one has this annoying problem.
At home I has the desktop computer and the notebook as well. Both computers work great with compiz independently of total screen size. I guess it happens due to these comps have new expensive graphics cards (Radeon HD 4780 and GeForce M240 or something like this).
Ok! I won't bother you anymore. But I hope that mentioned problem with max texture size will be fixed someday.

Cheers!