Server segmentation fault at address 0x306 using ParaView

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* Server segmentation fault at address 0x306 using ParaView
@ 2010-11-29  0:27 Ken Olum
  2010-12-14 14:54 ` Jon TURNEY
  0 siblings, 1 reply; 10+ messages in thread
From: Ken Olum @ 2010-11-29  0:27 UTC (permalink / raw)
  To: cygwin-xfree

Running paraview 3.8.1 (see http://paraview.org) on a Linux client
(Mandriva 2010.0 or Red Hat Enterprise Server 5.5) causes a crash of
my Cygwin/X (release 1.9.2.0) with "Segmentation fault at address
0x306".  Any ideas?

Paraview uses OpenGL.  Perhaps that is related.

Thanks.

                                        Ken

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* Re: Server segmentation fault at address 0x306 using ParaView
  2010-11-29  0:27 Server segmentation fault at address 0x306 using ParaView Ken Olum
@ 2010-12-14 14:54 ` Jon TURNEY
  2010-12-14 16:07   ` Ken Olum
  0 siblings, 1 reply; 10+ messages in thread
From: Jon TURNEY @ 2010-12-14 14:54 UTC (permalink / raw)
  To: cygwin-xfree; +Cc: kdo

On 29/11/2010 00:26, Ken Olum wrote:
> Running paraview 3.8.1 (see http://paraview.org) on a Linux client
> (Mandriva 2010.0 or Red Hat Enterprise Server 5.5) causes a crash of
> my Cygwin/X (release 1.9.2.0) with "Segmentation fault at address
> 0x306".  Any ideas?

Thanks for the problem report.

In a quick test, I wasn't able to reproduce this crash using paraview 3.8.1 on
Fedora 14. Do you need to do anything other than just start paraview to
demonstrate the problem?

> Paraview uses OpenGL.  Perhaps that is related.


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Can you attach your /var/log/xwin/XWin.0.log, please.

> Documentation:         http://x.cygwin.com/docs/
> FAQ:                   http://x.cygwin.com/docs/faq/

-- 
Jon TURNEY
Volunteer Cygwin/X X Server maintainer

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* Re: Server segmentation fault at address 0x306 using ParaView
  2010-12-14 14:54 ` Jon TURNEY
@ 2010-12-14 16:07   ` Ken Olum
  2010-12-14 17:11     ` Jon TURNEY
  0 siblings, 1 reply; 10+ messages in thread
From: Ken Olum @ 2010-12-14 16:07 UTC (permalink / raw)
  To: cygwin-xfree

[-- Attachment #1: Type: text/plain, Size: 757 bytes --]

Thanks for looking into this.  All I need to do to trigger the problem
is to run paraview.  However, it seems to depend on the details of the
Linux installation -- system libraries, I suppose.

On this system it works:

Mandriva Linux release 2010.1 (Official) for x86_64
Linux cosmos.phy.tufts.edu 2.6.33.7-server-2mnb #1 SMP Mon Sep 20 19:01:10 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux

Whereas on this one it crashes:

Red Hat Enterprise Linux Client release 5.5 (Tikanga)
Linux node12 2.6.18-194.17.4.el5 #1 SMP Wed Oct 20 13:03:08 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

These two systems are both running the exact same 3.8.1 x86_64 executable
that I downloaded.

I attach my Xwin.0.log showing the crash.

                                        Ken

[-- Attachment #2: XWin.0.log --]
[-- Type: application/octet-stream, Size: 3253 bytes --]

Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 1.9.2.0 (10902000)
Build Date: 2010-11-03

XWin was started with the following command line:

X :0 

ddxProcessArgument - Initializing default screens
winInitializeScreenDefaults - primary monitor w 1280 h 1024
winInitializeDefaultScreens - native DPI x 96 y 96
_XSERVTransSocketOpenCOTSServer: Unable to open socket for inet6
_XSERVTransOpen: transport open failed for inet6/kdo-sr1111nx:0
_XSERVTransMakeAllCOTSServerListeners: failed to open listener for inet6
[  2032.125] winInitializeScreens - 1
[  2032.125] winInitializeScreen - 0
[  2032.125] (WW) Failed to open protocol names file /usr/lib/X11/protocol.txt
[  2032.125] (II) xorg.conf is not supported
[  2032.125] (II) See http://x.cygwin.com/docs/faq/cygwin-x-faq.html for more information
[  2032.125] LoadPreferences: /home/kdo/.XWinrc not found
[  2032.125] LoadPreferences: Loading /etc/X11/system.XWinrc
[  2032.125] LoadPreferences: Done parsing the configuration file...
[  2032.125] winGetDisplay: DISPLAY=:0.0
[  2032.125] winDetectSupportedEngines - Windows NT/2000/XP
[  2032.125] winDetectSupportedEngines - DirectDraw installed
[  2032.125] winDetectSupportedEngines - Allowing PrimaryDD
[  2032.125] winDetectSupportedEngines - DirectDraw4 installed
[  2032.125] winDetectSupportedEngines - Returning, supported engines 0000001f
[  2032.125] winSetEngine - Using Shadow DirectDraw NonLocking
[  2032.125] winScreenInit - Using Windows display depth of 32 bits per pixel
[  2032.187] winFinishScreenInitFB - Masks: 00ff0000 0000ff00 000000ff
[  2032.187] Screen 0 added at virtual desktop coordinate (0,0).
[  2032.187] MIT-SHM extension disabled due to lack of kernel support
[  2032.187] XFree86-Bigfont extension local-client optimization disabled due to lack of shared memory support in the kernel
[  2032.500] (II) AIGLX: Loaded and initialized /usr/lib/dri/swrast_dri.so
[  2032.500] (II) GLX: Initialized DRISWRAST GL provider for screen 0
[  2032.515] [dix] Could not init font path element /usr/share/fonts/TTF/, removing from list!
[  2032.515] [dix] Could not init font path element /usr/share/fonts/OTF/, removing from list!
[  2033.515] winPointerWarpCursor - Discarding first warp: 637 479
[  2033.515] (--) 3 mouse buttons found
[  2033.515] (--) Setting autorepeat to delay=500, rate=31
[  2033.515] (--) Windows keyboard layout: "00000409" (00000409) "US", type 4
[  2033.515] (--) Found matching XKB configuration "English (USA)"
[  2033.515] (--) Model = "pc105" Layout = "us" Variant = "none" Options = "none"
[  2033.515] Rules = "base" Model = "pc105" Layout = "us" Variant = "none" Options = "none"
[  2033.546] winProcEstablishConnection - Hello
[  2033.546] winInitClipboard ()
[  2033.546] winClipboardProc - Hello
[  2033.546] DetectUnicodeSupport - Windows NT/2000/XP
[  2033.562] winGetDisplay: DISPLAY=:0.0
[  2033.562] winClipboardProc - DISPLAY=:0.0
[  2033.562] winProcEstablishConnection - winInitClipboard returned.
[  2033.578] winClipboardProc - XOpenDisplay () returned and successfully opened the display.
[  2082.562] Segmentation fault at address 0x306
[  2082.562] 
Fatal server error:
[  2082.562] Caught signal 11 (Segmentation fault). Server aborting
[  2082.562] 

[-- Attachment #3: Type: text/plain, Size: 223 bytes --]

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* Re: Server segmentation fault at address 0x306 using ParaView
  2010-12-14 16:07   ` Ken Olum
@ 2010-12-14 17:11     ` Jon TURNEY
  2010-12-14 17:52       ` Ken Olum
  0 siblings, 1 reply; 10+ messages in thread
From: Jon TURNEY @ 2010-12-14 17:11 UTC (permalink / raw)
  To: cygwin-xfree; +Cc: kdo

On 14/12/2010 16:07, Ken Olum wrote:
> Thanks for looking into this.  All I need to do to trigger the problem
> is to run paraview.  However, it seems to depend on the details of the
> Linux installation -- system libraries, I suppose.
> 
> On this system it works:
> 
> Mandriva Linux release 2010.1 (Official) for x86_64
> Linux cosmos.phy.tufts.edu 2.6.33.7-server-2mnb #1 SMP Mon Sep 20 19:01:10 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
> 
> Whereas on this one it crashes:
> 
> Red Hat Enterprise Linux Client release 5.5 (Tikanga)
> Linux node12 2.6.18-194.17.4.el5 #1 SMP Wed Oct 20 13:03:08 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
> 
> These two systems are both running the exact same 3.8.1 x86_64 executable
> that I downloaded.
> 
> I attach my Xwin.0.log showing the crash.

Thanks.

Can you try to obtain a backtrace for the crash using the instructions at [1],
please?

[1] http://x.cygwin.com/devel/backtrace.html

-- 
Jon TURNEY
Volunteer Cygwin/X X Server maintainer

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* Re: Server segmentation fault at address 0x306 using ParaView
  2010-12-14 17:11     ` Jon TURNEY
@ 2010-12-14 17:52       ` Ken Olum
  2010-12-15 15:00         ` Jon TURNEY
  0 siblings, 1 reply; 10+ messages in thread
From: Ken Olum @ 2010-12-14 17:52 UTC (permalink / raw)
  To: cygwin-xfree

Here is the backtrace.  Thanks again.

                                        Ken

#0  0x0a3eb232 in swrast_dri!_mesa_GetProgramNamedParameterdvNV ()
   from /usr/lib/dri/swrast_dri.so
#1  0x004e4baa in _fu456___glapi_Dispatch () at indirect_dispatch.c:4854
#2  0x004d6975 in __glXDisp_Render (cl=0x1010ab4c, pc=0x10459170 "\024")
    at glxcmds.c:1854
#3  0x004d2515 in __glXDispatch (client=0x1010aa88) at glxext.c:604
#4  0x00570ac0 in Dispatch () at dispatch.c:433
#5  0x0056af00 in main (argc=2, argv=0x6123d464, envp=0x100300f8)
    at main.c:298

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* Re: Server segmentation fault at address 0x306 using ParaView
  2010-12-14 17:52       ` Ken Olum
@ 2010-12-15 15:00         ` Jon TURNEY
  2010-12-15 16:14           ` Ken Olum
  0 siblings, 1 reply; 10+ messages in thread
From: Jon TURNEY @ 2010-12-15 15:00 UTC (permalink / raw)
  To: cygwin-xfree; +Cc: kdo

On 14/12/2010 17:52, Ken Olum wrote:
> Here is the backtrace.  Thanks again.
> 
>                                         Ken
> 
> #0  0x0a3eb232 in swrast_dri!_mesa_GetProgramNamedParameterdvNV ()
>    from /usr/lib/dri/swrast_dri.so
> #1  0x004e4baa in _fu456___glapi_Dispatch () at indirect_dispatch.c:4854
> #2  0x004d6975 in __glXDisp_Render (cl=0x1010ab4c, pc=0x10459170 "\024")
>     at glxcmds.c:1854
> #3  0x004d2515 in __glXDispatch (client=0x1010aa88) at glxext.c:604
> #4  0x00570ac0 in Dispatch () at dispatch.c:433
> #5  0x0056af00 in main (argc=2, argv=0x6123d464, envp=0x100300f8)
>     at main.c:298

Thanks.

Can you compare the versions of libGL installed on the Mandriva 2010.1 and
RHEL 5.5 hosts?

Have you tried if other OpenGL programs on the RHEL host work? Does glxinfo work?

-- 
Jon TURNEY
Volunteer Cygwin/X X Server maintainer

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* Re: Server segmentation fault at address 0x306 using ParaView
  2010-12-15 15:00         ` Jon TURNEY
@ 2010-12-15 16:14           ` Ken Olum
  2011-01-02 18:11             ` Jon TURNEY
  0 siblings, 1 reply; 10+ messages in thread
From: Ken Olum @ 2010-12-15 16:14 UTC (permalink / raw)
  To: cygwin-xfree

[-- Attachment #1: Type: text/plain, Size: 548 bytes --]

On the Mandriva 2010.1 host, /usr/lib64/libGL.so.1 is from
lib64mesagl1-7.8.1-6mdv2010.1.  On the RHEL host, it is from
mesa-libGL-6.5.1-7.8.el5.

I have not tried other OpenGL programs, but I can run glxinfo without
a crash on either machine.  I attach the results.  They are not the
same.  In particular, I was surprised to find that RHEL reports
"direct rendering: No" while Mandriva reports "direct rendering: Yes",
although I don't know if this matters when one is running over the
network anyway.

                                        Ken

[-- Attachment #2: glxinfo.Mandriva --]
[-- Type: application/octet-stream, Size: 19329 bytes --]

name of display: localhost:13.0
display: localhost:13  screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
    GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_OML_swap_method, 
    GLX_SGI_make_current_read, GLX_SGIS_multisample, GLX_SGIX_hyperpipe, 
    GLX_SGIX_swap_barrier, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_MESA_copy_sub_buffer, GLX_INTEL_swap_event
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_INTEL_swap_event
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_OML_swap_method, 
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_INTEL_swap_event
OpenGL vendor string: Mesa Project
OpenGL renderer string: Software Rasterizer
OpenGL version string: 2.1 Mesa 7.8.1
OpenGL shading language version string: 1.20
OpenGL extensions:
    GL_ARB_copy_buffer, GL_ARB_depth_texture, GL_ARB_depth_clamp, 
    GL_ARB_draw_buffers, GL_ARB_draw_elements_base_vertex, 
    GL_ARB_fragment_coord_conventions, GL_ARB_fragment_program, 
    GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader, 
    GL_ARB_framebuffer_object, GL_ARB_half_float_pixel, 
    GL_ARB_half_float_vertex, GL_ARB_imaging, GL_ARB_map_buffer_range, 
    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_provoking_vertex, GL_ARB_shader_objects, 
    GL_ARB_shading_language_100, GL_ARB_shading_language_120, GL_ARB_shadow, 
    GL_ARB_shadow_ambient, GL_ARB_sync, 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_texture_non_power_of_two, 
    GL_ARB_texture_rectangle, GL_ARB_transpose_matrix, 
    GL_ARB_vertex_array_bgra, GL_ARB_vertex_array_object, 
    GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, GL_ARB_vertex_shader, 
    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_compiled_vertex_array, GL_EXT_convolution, GL_EXT_copy_texture, 
    GL_EXT_depth_bounds_test, GL_EXT_draw_buffers2, 
    GL_EXT_draw_range_elements, GL_EXT_framebuffer_blit, 
    GL_EXT_framebuffer_multisample, 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_paletted_texture, GL_EXT_pixel_buffer_object, 
    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_shared_texture_palette, GL_EXT_stencil_two_side, 
    GL_EXT_stencil_wrap, GL_EXT_subtexture, GL_EXT_texture, GL_EXT_texture3D, 
    GL_EXT_texture_array, GL_EXT_texture_cube_map, GL_EXT_texture_edge_clamp, 
    GL_EXT_texture_env_add, GL_EXT_texture_env_combine, 
    GL_EXT_texture_env_dot3, GL_EXT_texture_lod_bias, 
    GL_EXT_texture_mirror_clamp, GL_EXT_texture_object, 
    GL_EXT_texture_rectangle, GL_EXT_texture_sRGB, GL_EXT_texture_swizzle, 
    GL_EXT_vertex_array, GL_EXT_vertex_array_bgra, 
    GL_3DFX_texture_compression_FXT1, GL_APPLE_packed_pixels, 
    GL_APPLE_vertex_array_object, GL_APPLE_object_purgeable, 
    GL_ATI_blend_equation_separate, GL_ATI_envmap_bumpmap, 
    GL_ATI_texture_env_combine3, GL_ATI_texture_mirror_once, 
    GL_ATI_fragment_shader, 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_resize_buffers, GL_MESA_texture_array, 
    GL_MESA_ycbcr_texture, GL_MESA_window_pos, GL_NV_blend_square, 
    GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_fragment_program, 
    GL_NV_fragment_program_option, GL_NV_light_max_exponent, 
    GL_NV_packed_depth_stencil, GL_NV_point_sprite, 
    GL_NV_texture_env_combine4, GL_NV_texture_rectangle, 
    GL_NV_texgen_reflection, GL_NV_vertex_program, GL_NV_vertex_program1_1, 
    GL_OES_read_format, GL_SGI_color_matrix, GL_SGI_color_table, 
    GL_SGI_texture_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
0xc3 24 tc  0 24  0 r  .  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xc4 24 tc  0 24  0 r  .  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xc5 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xc6 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xc7 24 tc  0 24  0 r  .  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0xc8 24 tc  0 24  0 r  .  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0xc9 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0xca 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0xcb 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xcc 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xcd 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xce 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xcf 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xd0 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xd1 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xd2 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xd3 24 tc  0 32  0 r  .  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xd4 24 tc  0 32  0 r  .  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xd5 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xd6 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xd7 24 tc  0 32  0 r  .  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0xd8 24 tc  0 32  0 r  .  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0xd9 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0xda 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0xdb 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xdc 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xdd 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xde 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xdf 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xe0 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xe1 24 dc  0 24  0 r  .  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xe2 24 dc  0 24  0 r  .  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xe3 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xe4 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xe5 24 dc  0 24  0 r  .  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0xe6 24 dc  0 24  0 r  .  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0xe7 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0xe8 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0xe9 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xea 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xeb 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xec 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xed 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xee 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xef 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xf0 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xf1 24 dc  0 32  0 r  .  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xf2 24 dc  0 32  0 r  .  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xf3 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xf4 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xf5 24 dc  0 32  0 r  .  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0xf6 24 dc  0 32  0 r  .  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0xf7 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0xf8 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0xf9 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xfa 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xfb 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xfc 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xfd 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xfe 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xff 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0x100 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0x42 32 tc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None

128 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
----------------------------------------------------------------------
0x43  0 tc  0  8  0 r  .  .  3  3  2  0  0  0  0  0  0  0  0  0 0 None
0x44  0 tc  0  8  0 r  .  .  3  3  2  0  0  0  0 16 16 16  0  0 0 Slow
0x45  0 tc  0  8  0 r  y  .  3  3  2  0  0  0  0  0  0  0  0  0 0 None
0x46  0 tc  0  8  0 r  y  .  3  3  2  0  0  0  0 16 16 16  0  0 0 Slow
0x47  0 tc  0  8  0 r  .  .  3  3  2  0  0  0  8  0  0  0  0  0 0 None
0x48  0 tc  0  8  0 r  .  .  3  3  2  0  0  0  8 16 16 16  0  0 0 Slow
0x49  0 tc  0  8  0 r  y  .  3  3  2  0  0  0  8  0  0  0  0  0 0 None
0x4a  0 tc  0  8  0 r  y  .  3  3  2  0  0  0  8 16 16 16  0  0 0 Slow
0x4b  0 tc  0  8  0 r  .  .  3  3  2  0  0  8  0  0  0  0  0  0 0 None
0x4c  0 tc  0  8  0 r  .  .  3  3  2  0  0  8  0 16 16 16  0  0 0 Slow
0x4d  0 tc  0  8  0 r  y  .  3  3  2  0  0  8  0  0  0  0  0  0 0 None
0x4e  0 tc  0  8  0 r  y  .  3  3  2  0  0  8  0 16 16 16  0  0 0 Slow
0x4f  0 tc  0  8  0 r  .  .  3  3  2  0  0  8  8  0  0  0  0  0 0 None
0x50  0 tc  0  8  0 r  .  .  3  3  2  0  0  8  8 16 16 16  0  0 0 Slow
0x51  0 tc  0  8  0 r  y  .  3  3  2  0  0  8  8  0  0  0  0  0 0 None
0x52  0 tc  0  8  0 r  y  .  3  3  2  0  0  8  8 16 16 16  0  0 0 Slow
0x53  0 tc  0 16  0 r  .  .  5  6  5  0  0  0  0  0  0  0  0  0 0 None
0x54  0 tc  0 16  0 r  .  .  5  6  5  0  0  0  0 16 16 16  0  0 0 Slow
0x55  0 tc  0 16  0 r  y  .  5  6  5  0  0  0  0  0  0  0  0  0 0 None
0x56  0 tc  0 16  0 r  y  .  5  6  5  0  0  0  0 16 16 16  0  0 0 Slow
0x57  0 tc  0 16  0 r  .  .  5  6  5  0  0  0  8  0  0  0  0  0 0 None
0x58  0 tc  0 16  0 r  .  .  5  6  5  0  0  0  8 16 16 16  0  0 0 Slow
0x59  0 tc  0 16  0 r  y  .  5  6  5  0  0  0  8  0  0  0  0  0 0 None
0x5a  0 tc  0 16  0 r  y  .  5  6  5  0  0  0  8 16 16 16  0  0 0 Slow
0x5b  0 tc  0 16  0 r  .  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
0x5c  0 tc  0 16  0 r  .  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
0x5d  0 tc  0 16  0 r  y  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
0x5e  0 tc  0 16  0 r  y  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
0x5f  0 tc  0 16  0 r  .  .  5  6  5  0  0 16  8  0  0  0  0  0 0 None
0x60  0 tc  0 16  0 r  .  .  5  6  5  0  0 16  8 16 16 16  0  0 0 Slow
0x61  0 tc  0 16  0 r  y  .  5  6  5  0  0 16  8  0  0  0  0  0 0 None
0x62  0 tc  0 16  0 r  y  .  5  6  5  0  0 16  8 16 16 16  0  0 0 Slow
0x63  0 tc  0 24  0 r  .  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0x64  0 tc  0 24  0 r  .  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0x65  0 tc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0x66  0 tc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0x67  0 tc  0 24  0 r  .  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0x68  0 tc  0 24  0 r  .  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0x69  0 tc  0 24  0 r  y  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0x6a  0 tc  0 24  0 r  y  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0x6b  0 tc  0 24  0 r  .  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0x6c  0 tc  0 24  0 r  .  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0x6d  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0x6e  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0x6f  0 tc  0 24  0 r  .  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0x70  0 tc  0 24  0 r  .  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0x71  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0x72  0 tc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0x73  0 tc  0 32  0 r  .  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0x74  0 tc  0 32  0 r  .  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0x75  0 tc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0x76  0 tc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0x77  0 tc  0 32  0 r  .  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0x78  0 tc  0 32  0 r  .  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0x79  0 tc  0 32  0 r  y  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0x7a  0 tc  0 32  0 r  y  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0x7b  0 tc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0x7c  0 tc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0x7d  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0x7e  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0x7f  0 tc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0x80  0 tc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0x81  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0x82  0 tc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0x83  0 dc  0  8  0 r  .  .  3  3  2  0  0  0  0  0  0  0  0  0 0 None
0x84  0 dc  0  8  0 r  .  .  3  3  2  0  0  0  0 16 16 16  0  0 0 Slow
0x85  0 dc  0  8  0 r  y  .  3  3  2  0  0  0  0  0  0  0  0  0 0 None
0x86  0 dc  0  8  0 r  y  .  3  3  2  0  0  0  0 16 16 16  0  0 0 Slow
0x87  0 dc  0  8  0 r  .  .  3  3  2  0  0  0  8  0  0  0  0  0 0 None
0x88  0 dc  0  8  0 r  .  .  3  3  2  0  0  0  8 16 16 16  0  0 0 Slow
0x89  0 dc  0  8  0 r  y  .  3  3  2  0  0  0  8  0  0  0  0  0 0 None
0x8a  0 dc  0  8  0 r  y  .  3  3  2  0  0  0  8 16 16 16  0  0 0 Slow
0x8b  0 dc  0  8  0 r  .  .  3  3  2  0  0  8  0  0  0  0  0  0 0 None
0x8c  0 dc  0  8  0 r  .  .  3  3  2  0  0  8  0 16 16 16  0  0 0 Slow
0x8d  0 dc  0  8  0 r  y  .  3  3  2  0  0  8  0  0  0  0  0  0 0 None
0x8e  0 dc  0  8  0 r  y  .  3  3  2  0  0  8  0 16 16 16  0  0 0 Slow
0x8f  0 dc  0  8  0 r  .  .  3  3  2  0  0  8  8  0  0  0  0  0 0 None
0x90  0 dc  0  8  0 r  .  .  3  3  2  0  0  8  8 16 16 16  0  0 0 Slow
0x91  0 dc  0  8  0 r  y  .  3  3  2  0  0  8  8  0  0  0  0  0 0 None
0x92  0 dc  0  8  0 r  y  .  3  3  2  0  0  8  8 16 16 16  0  0 0 Slow
0x93  0 dc  0 16  0 r  .  .  5  6  5  0  0  0  0  0  0  0  0  0 0 None
0x94  0 dc  0 16  0 r  .  .  5  6  5  0  0  0  0 16 16 16  0  0 0 Slow
0x95  0 dc  0 16  0 r  y  .  5  6  5  0  0  0  0  0  0  0  0  0 0 None
0x96  0 dc  0 16  0 r  y  .  5  6  5  0  0  0  0 16 16 16  0  0 0 Slow
0x97  0 dc  0 16  0 r  .  .  5  6  5  0  0  0  8  0  0  0  0  0 0 None
0x98  0 dc  0 16  0 r  .  .  5  6  5  0  0  0  8 16 16 16  0  0 0 Slow
0x99  0 dc  0 16  0 r  y  .  5  6  5  0  0  0  8  0  0  0  0  0 0 None
0x9a  0 dc  0 16  0 r  y  .  5  6  5  0  0  0  8 16 16 16  0  0 0 Slow
0x9b  0 dc  0 16  0 r  .  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
0x9c  0 dc  0 16  0 r  .  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
0x9d  0 dc  0 16  0 r  y  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
0x9e  0 dc  0 16  0 r  y  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
0x9f  0 dc  0 16  0 r  .  .  5  6  5  0  0 16  8  0  0  0  0  0 0 None
0xa0  0 dc  0 16  0 r  .  .  5  6  5  0  0 16  8 16 16 16  0  0 0 Slow
0xa1  0 dc  0 16  0 r  y  .  5  6  5  0  0 16  8  0  0  0  0  0 0 None
0xa2  0 dc  0 16  0 r  y  .  5  6  5  0  0 16  8 16 16 16  0  0 0 Slow
0xa3  0 dc  0 24  0 r  .  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xa4  0 dc  0 24  0 r  .  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xa5  0 dc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xa6  0 dc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xa7  0 dc  0 24  0 r  .  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0xa8  0 dc  0 24  0 r  .  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0xa9  0 dc  0 24  0 r  y  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0xaa  0 dc  0 24  0 r  y  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0xab  0 dc  0 24  0 r  .  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xac  0 dc  0 24  0 r  .  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xad  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xae  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xaf  0 dc  0 24  0 r  .  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xb0  0 dc  0 24  0 r  .  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xb1  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xb2  0 dc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xb3  0 dc  0 32  0 r  .  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xb4  0 dc  0 32  0 r  .  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xb5  0 dc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xb6  0 dc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xb7  0 dc  0 32  0 r  .  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0xb8  0 dc  0 32  0 r  .  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0xb9  0 dc  0 32  0 r  y  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0xba  0 dc  0 32  0 r  y  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0xbb  0 dc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xbc  0 dc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xbd  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xbe  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xbf  0 dc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xc0  0 dc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xc1  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xc2  0 dc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow


[-- Attachment #3: glxinfo.RHEL --]
[-- Type: application/octet-stream, Size: 8682 bytes --]

name of display: h01.uit.tufts.edu:13.0
display: h01.uit.tufts.edu:13  screen: 0
direct rendering: No
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
    GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_OML_swap_method, 
    GLX_SGI_make_current_read, GLX_SGIS_multisample, GLX_SGIX_hyperpipe, 
    GLX_SGIX_swap_barrier, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_MESA_copy_sub_buffer, GLX_INTEL_swap_event
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_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_OML_swap_method, GLX_SGI_make_current_read, GLX_SGIS_multisample, 
    GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_EXT_texture_from_pixmap
OpenGL vendor string: Mesa Project
OpenGL renderer string: Software Rasterizer
OpenGL version string: 1.4 (2.1 Mesa 7.8.2)
OpenGL extensions:
    GL_ARB_depth_texture, GL_ARB_draw_buffers, GL_ARB_fragment_program, 
    GL_ARB_fragment_program_shadow, GL_ARB_imaging, GL_ARB_multisample, 
    GL_ARB_multitexture, GL_ARB_occlusion_query, GL_ARB_point_parameters, 
    GL_ARB_point_sprite, 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_ARB_texture_mirrored_repeat, 
    GL_ARB_texture_non_power_of_two, GL_ARB_texture_rectangle, 
    GL_ARB_transpose_matrix, 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_copy_texture, GL_EXT_draw_range_elements, GL_EXT_fog_coord, 
    GL_EXT_framebuffer_object, GL_EXT_multi_draw_arrays, GL_EXT_packed_pixels, 
    GL_EXT_paletted_texture, GL_EXT_point_parameters, GL_EXT_polygon_offset, 
    GL_EXT_rescale_normal, GL_EXT_secondary_color, 
    GL_EXT_separate_specular_color, GL_EXT_shadow_funcs, 
    GL_EXT_shared_texture_palette, GL_EXT_stencil_two_side, 
    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_lod_bias, GL_EXT_texture_mirror_clamp, 
    GL_EXT_texture_object, GL_EXT_texture_rectangle, GL_EXT_vertex_array, 
    GL_3DFX_texture_compression_FXT1, GL_APPLE_packed_pixels, 
    GL_ATI_draw_buffers, GL_ATI_texture_env_combine3, 
    GL_ATI_texture_mirror_once, GL_ATIX_texture_env_combine3, 
    GL_IBM_texture_mirrored_repeat, GL_INGR_blend_func_separate, 
    GL_MESA_pack_invert, GL_MESA_ycbcr_texture, GL_NV_blend_square, 
    GL_NV_depth_clamp, GL_NV_fragment_program, GL_NV_fragment_program_option, 
    GL_NV_light_max_exponent, GL_NV_point_sprite, GL_NV_texgen_reflection, 
    GL_NV_texture_env_combine4, GL_NV_texture_rectangle, GL_NV_vertex_program, 
    GL_NV_vertex_program1_1, 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_SGIX_shadow_ambient, 
    GL_SUN_multi_draw_arrays

   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
0xc3 24 tc  0 24  0 r  .  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xc4 24 tc  0 24  0 r  .  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xc5 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xc6 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xc7 24 tc  0 24  0 r  .  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0xc8 24 tc  0 24  0 r  .  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0xc9 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0xca 24 tc  0 24  0 r  y  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0xcb 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xcc 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xcd 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xce 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xcf 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xd0 24 tc  0 24  0 r  .  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xd1 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xd2 24 tc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xd3 24 tc  0 32  0 r  .  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xd4 24 tc  0 32  0 r  .  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xd5 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xd6 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xd7 24 tc  0 32  0 r  .  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0xd8 24 tc  0 32  0 r  .  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0xd9 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0xda 24 tc  0 32  0 r  y  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0xdb 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xdc 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xdd 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xde 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xdf 24 tc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xe0 24 tc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xe1 24 dc  0 24  0 r  .  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xe2 24 dc  0 24  0 r  .  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xe3 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  0  0  0  0  0  0 0 None
0xe4 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  0 16 16 16  0  0 0 Slow
0xe5 24 dc  0 24  0 r  .  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0xe6 24 dc  0 24  0 r  .  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0xe7 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  8  0  0  0  0  0 0 None
0xe8 24 dc  0 24  0 r  y  .  8  8  8  0  0  0  8 16 16 16  0  0 0 Slow
0xe9 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xea 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xeb 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  0  0  0  0  0  0 0 None
0xec 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  0 16 16 16  0  0 0 Slow
0xed 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xee 24 dc  0 24  0 r  .  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xef 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  8  0  0  0  0  0 0 None
0xf0 24 dc  0 24  0 r  y  .  8  8  8  0  0 24  8 16 16 16  0  0 0 Slow
0xf1 24 dc  0 32  0 r  .  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xf2 24 dc  0 32  0 r  .  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xf3 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  0  0  0  0  0  0 0 None
0xf4 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  0 16 16 16 16  0 0 Slow
0xf5 24 dc  0 32  0 r  .  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0xf6 24 dc  0 32  0 r  .  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0xf7 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  8  0  0  0  0  0 0 None
0xf8 24 dc  0 32  0 r  y  .  8  8  8  8  0  0  8 16 16 16 16  0 0 Slow
0xf9 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xfa 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xfb 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
0xfc 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  0 16 16 16 16  0 0 Slow
0xfd 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0xfe 24 dc  0 32  0 r  .  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0xff 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8  0  0  0  0  0 0 None
0x100 24 dc  0 32  0 r  y  .  8  8  8  8  0 24  8 16 16 16 16  0 0 Slow
0x42 32 tc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None

[-- Attachment #4: Type: text/plain, Size: 223 bytes --]

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: Server segmentation fault at address 0x306 using ParaView
  2010-12-15 16:14           ` Ken Olum
@ 2011-01-02 18:11             ` Jon TURNEY
  2011-01-04 16:08               ` Ken Olum
  0 siblings, 1 reply; 10+ messages in thread
From: Jon TURNEY @ 2011-01-02 18:11 UTC (permalink / raw)
  To: cygwin-xfree; +Cc: kdo

On 15/12/2010 16:14, Ken Olum wrote:
> On the Mandriva 2010.1 host, /usr/lib64/libGL.so.1 is from
> lib64mesagl1-7.8.1-6mdv2010.1.  On the RHEL host, it is from
> mesa-libGL-6.5.1-7.8.el5.

Thanks.

I was able to reproduce your problem using Centos 5.5 (no RHEL for me :-))

> I have not tried other OpenGL programs, but I can run glxinfo without
> a crash on either machine.  I attach the results.  They are not the
> same.  In particular, I was surprised to find that RHEL reports
> "direct rendering: No" while Mandriva reports "direct rendering: Yes",
> although I don't know if this matters when one is running over the
> network anyway.

Yes, this is the significant difference:  The more recent libGL is able to
provide direct rendering using the xlib driver, where the software OpenGL
renderer is used at the client to render to a pixmap, which is then
transferred using xlib to the server.

Unfortunately, some rather fragile linkage tricks are used at the moment to
make indirect rendering function dispatch work, and it seems they have been
broken when we updated to mesa 7.8.

I've updated them to fix the problem, and uploaded a Xserver snapshot at [1].
 Please give that a try and see if it fixes your problem, if you can.

I would suggest that for an application like ParaView, you will probably get
much better performance if you use the experimental hardware accelerated
OpenGL -wgl mode, see [2] for details.

[1] ftp://cygwin.com/pub/cygwinx/XWin.20110102-git-29db9091c6ae4995.exe.bz2
[2] http://cygwin.com/ml/cygwin-xfree-announce/2010-11/msg00000.html

-- 
Jon TURNEY
Volunteer Cygwin/X X Server maintainer

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: Server segmentation fault at address 0x306 using ParaView
  2011-01-02 18:11             ` Jon TURNEY
@ 2011-01-04 16:08               ` Ken Olum
  2011-01-05 16:59                 ` Jon TURNEY
  0 siblings, 1 reply; 10+ messages in thread
From: Ken Olum @ 2011-01-04 16:08 UTC (permalink / raw)
  To: cygwin-xfree

   From: Jon TURNEY <jon.turney@dronecode.org.uk>
   Date: Sun, 02 Jan 2011 18:08:02 +0000

   I've updated them to fix the problem, and uploaded a Xserver snapshot at [1].
   [1] ftp://cygwin.com/pub/cygwinx/XWin.20110102-git-29db9091c6ae4995.exe.bz2

This new snapshot works properly and does not crash.  Thanks very much!

   I would suggest that for an application like ParaView, you will probably get
   much better performance if you use the experimental hardware accelerated
   OpenGL -wgl mode

I'll try this.  Should I prefer direct rendering from remote machines
that support that and only use AIGLX when I would have indirect
rendering anyway, or should I explicitly request indirect rendering in
order to use AIGLX in all cases?  Thanks again.

                                        Ken

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: Server segmentation fault at address 0x306 using ParaView
  2011-01-04 16:08               ` Ken Olum
@ 2011-01-05 16:59                 ` Jon TURNEY
  0 siblings, 0 replies; 10+ messages in thread
From: Jon TURNEY @ 2011-01-05 16:59 UTC (permalink / raw)
  To: cygwin-xfree, kdo

On 04/01/2011 16:08, Ken Olum wrote:
>    From: Jon TURNEY <jon.turney@dronecode.org.uk>
>    Date: Sun, 02 Jan 2011 18:08:02 +0000
> 
>    I've updated them to fix the problem, and uploaded a Xserver snapshot at [1].
>    [1] ftp://cygwin.com/pub/cygwinx/XWin.20110102-git-29db9091c6ae4995.exe.bz2
> 
> This new snapshot works properly and does not crash.  Thanks very much!

Thanks for testing. I'll make an updated package with this change when I can.

>    I would suggest that for an application like ParaView, you will probably get
>    much better performance if you use the experimental hardware accelerated
>    OpenGL -wgl mode
> 
> I'll try this.  Should I prefer direct rendering from remote machines
> that support that and only use AIGLX when I would have indirect
> rendering anyway, or should I explicitly request indirect rendering in
> order to use AIGLX in all cases?  Thanks again.

There's a trade-off here between rendering performance (software rending vs.
hardware acceleration) and network latency (just sending the image vs. sending
lots of OpenGL commands (some of which might be synchronous, requiring a
round-trip for the response))

So, the short answer is, you should try both and see which performs best :-)

Provided your server isn't on the moon, I would guess that ParaView would
behave better with indirect but accelerated rendering, but that's just
speculation.

I'm not sure of the reasoning for mesa making direct using software rendering
the default for remote clients, I'm not sure exactly what kind of client it
helps with.

Possibly the UG should have some words discussing this issue.

-- 
Jon TURNEY
Volunteer Cygwin/X X Server maintainer

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^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2011-01-05 16:59 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-11-29  0:27 Server segmentation fault at address 0x306 using ParaView Ken Olum
2010-12-14 14:54 ` Jon TURNEY
2010-12-14 16:07   ` Ken Olum
2010-12-14 17:11     ` Jon TURNEY
2010-12-14 17:52       ` Ken Olum
2010-12-15 15:00         ` Jon TURNEY
2010-12-15 16:14           ` Ken Olum
2011-01-02 18:11             ` Jon TURNEY
2011-01-04 16:08               ` Ken Olum
2011-01-05 16:59                 ` Jon TURNEY

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