$ /usr/bin/xawtv
This is xawtv-3.94, running on Linux/i686 (2.6.9-1.6_FC2)
WARNING: v4l-conf is compiled without DGA support.
WARNING: couldn't find framebuffer base address, try manual
         configuration ("v4l-conf -a <addr>")
Warning: Cannot convert string "-*-ledfixed-medium-r-*--39-*-*-*-c-*-*-*" to type FontStruct
ioctl: VIDIOC_OVERLAY(int=1): Invalid argument

ioctl: VIDIOC_OVERLAY(int=1): Invalid argument
X Error of failed request:  BadAlloc (insufficient resources for operation)
  Major opcode of failed request:  140 (XVideo)
  Minor opcode of failed request:  19 ()
  Serial number of failed request:  4494
  Current serial number in output stream:  4494

$ tvtime
Running tvtime 0.9.15.
Reading configuration from /etc/tvtime/tvtime.xml
Reading configuration from /home/czo/.tvtime/tvtime.xml
 
    Cannot allocate enough off-screen video memory.  This may be fixed by:
 
      1. Closing or restarting large X applications.
      2. Lowering the input width of tvtime (--inputwidth parameter).
      3. Lowering your colour depth or highest configured resolution.
      4. Increasing the amount of video memory in your X config file
         (for example, if you are using the i810 XFree86 driver.)
 
    See http://tvtime.net/ for more information.

$ glxgears
3285 frames in 5.0 seconds = 657.000 FPS
3625 frames in 5.0 seconds = 725.000 FPS
3632 frames in 5.0 seconds = 726.400 FPS
3275 frames in 5.0 seconds = 655.000 FPS
...

$ 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_SGI_make_current_read, GLX_SGIS_multisample
client glx vendor string: ATI
client glx version string: 1.3
client glx extensions:
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_EXT_import_context,
    GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_ATI_pixel_format_float,
    GLX_ATI_render_texture
GLX extensions:
    GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating,
    GLX_EXT_import_context
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: RADEON 9200SE DDR Generic
OpenGL version string: 1.3.4641 (X4.3.0-3.14.6)
OpenGL versioOpenGL extensions:
    GL_ARB_multitexture, GL_EXT_texture_env_add, GL_EXT_compiled_vertex_array,
    GL_S3_s3tc, GL_ARB_occlusion_query, GL_ARB_point_parameters,
    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_ARB_texture_mirrored_repeat,
    GL_ARB_transpose_matrix, GL_ARB_vertex_blend, GL_ARB_vertex_buffer_object,
    GL_ARB_vertex_program, GL_ARB_window_pos, GL_ATI_element_array,
    GL_ATI_envmap_bumpmap, GL_ATI_fragment_shader, GL_ATI_map_object_buffer,
    GL_ATI_texture_env_combine3, GL_ATI_texture_mirror_once,
    GL_ATI_vertex_array_object, GL_ATI_vertex_attrib_array_object,
    GL_ATI_vertex_streams, GL_ATIX_texture_env_combine3,
    GL_ATIX_texture_env_route, GL_ATIX_vertex_shader_output_point_size,
    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_draw_range_elements, GL_EXT_fog_coord, GL_EXT_multi_draw_arrays,
    GL_EXT_packed_pixels, GL_EXT_point_parameters, GL_EXT_rescale_normal,
    GL_EXT_secondary_color, GL_EXT_separate_specular_color,
    GL_EXT_stencil_wrap, GL_EXT_texgen_reflection, GL_EXT_texture3D,
    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_lod_bias, GL_EXT_texture_mirror_clamp,
    GL_EXT_texture_object, GL_EXT_texture_rectangle, GL_EXT_vertex_array,
    GL_EXT_vertex_shader, GL_HP_occlusion_test, GL_NV_texgen_reflection,
    GL_NV_blend_square, GL_NV_occlusion_query, GL_SGI_color_matrix,
    GL_SGIS_texture_edge_clamp, GL_SGIS_texture_border_clamp,
    GL_SGIS_texture_lod, GL_SGIS_generate_mipmap, GL_SUN_multi_draw_arrays
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  y  .  8  8  8  8  0 24  8 16 16 16 16  1 0 Slow
0x24 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  1 0 Slow
0x25 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  1 0 Slow
0x26 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  1 0 Slow
0x27 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  1 0 None
0x28 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  1 0 None
0x29 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  1 0 None
0x2a 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  1 0 None
0x2b 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  1 0 Slow
0x2c 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  1 0 Slow
0x2d 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  1 0 Slow
0x2e 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  1 0 Slow
0x2f 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  1 0 None
0x30 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  1 0 None
0x31 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  1 0 None
0x32 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  1 0 None