| has someone already found a solution to that problem ? 
 I have the same one - not only for the screensaver, also for other 3d programs (GEM) - but strangely not for glxgears ...
 
 Anyway, my system:
 - 2.6.16.11-kanotix-up-1 kernel
 - ati radeon driver (single head) with dri
 - Xorg7
 - output of glxinfo:
 
 Code: 
holzi@holzi:~/projects/att_NIME$ glxinfo
 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_hyperpipe, GLX_SGIX_swap_barrier,
 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 version: 1.2
 GLX extensions:
 GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
 GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_swap_control,
 GLX_MESA_swap_frame_usage, GLX_OML_swap_method, GLX_SGI_video_sync,
 GLX_SGIS_multisample, GLX_SGIX_fbconfig
 OpenGL vendor string: Tungsten Graphics, Inc.
 OpenGL renderer string: Mesa DRI Radeon 20050528 AGP 4x TCL
 OpenGL version string: 1.2 Mesa 6.4.1
 OpenGL extensions:
 GL_ARB_imaging, GL_ARB_multisample, 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_crossbar, GL_ARB_texture_env_dot3,
 GL_ARB_texture_mirrored_repeat, GL_ARB_texture_rectangle,
 GL_ARB_transpose_matrix, GL_ARB_window_pos, GL_EXT_abgr, GL_EXT_bgra,
 GL_EXT_blend_color, GL_EXT_blend_logic_op, GL_EXT_blend_minmax,
 GL_EXT_blend_subtract, GL_EXT_clip_volume_hint,
 GL_EXT_compiled_vertex_array, GL_EXT_convolution, GL_EXT_copy_texture,
 GL_EXT_draw_range_elements, GL_EXT_histogram, GL_EXT_packed_pixels,
 GL_EXT_polygon_offset, GL_EXT_rescale_normal, GL_EXT_secondary_color,
 GL_EXT_separate_specular_color, GL_EXT_stencil_wrap, GL_EXT_subtexture,
 GL_EXT_texture, GL_EXT_texture3D, 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_lod_bias, GL_EXT_texture_mirror_clamp,
 GL_EXT_texture_object, GL_EXT_texture_rectangle, GL_EXT_vertex_array,
 GL_APPLE_packed_pixels, GL_ATI_texture_env_combine3,
 GL_ATI_texture_mirror_once, GL_IBM_rasterpos_clip,
 GL_IBM_texture_mirrored_repeat, GL_MESA_ycbcr_texture, GL_MESA_window_pos,
 GL_NV_blend_square, GL_NV_light_max_exponent, GL_NV_texture_rectangle,
 GL_NV_texgen_reflection, 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
 glu version: 1.3
 glu extensions:
 GLU_EXT_nurbs_tessellator, GLU_EXT_object_space_tess
 
 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
 ----------------------------------------------------------------------
 0x23 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
 0x24 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
 0x25 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
 0x26 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
 0x27 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
 0x28 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
 0x29 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
 0x2a 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
 0x2b 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
 0x2c 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
 0x2d 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
 0x2e 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
 0x2f 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
 0x30 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
 0x31 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
 0x32 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
 
 
 Thanks in advance !
 LG
 Georg
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