[Mesa-dev] [Bug 76224] New: client with DISPLAY set to REMOTEHOST:0 tries to load local, unconfigured DRI drivers and fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76224

          Priority: medium
            Bug ID: 76224
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: client with DISPLAY set to REMOTEHOST:0 tries to load
                    local, unconfigured DRI drivers and fails
          Severity: critical
    Classification: Unclassified
                OS: Linux (All)
          Reporter: freedesktop at tlinx.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: GLX
           Product: Mesa

This is a regression from the pre-DRI and/or pre-wayland versions (i.e. -- this
used to work.  

Now, when a Mesa-using program tries to open/use OpenGL, it ignores the value
of the DISPLAY and tries to load a driver on the local host.  This fails as the
local system, being a [rendering, et al.] server has no local display but
expects to send it's output to a remote client.

This works for X-only programs -- and used to work OpenGL.  In fact, the
infrastructure still works (good news) -- it correctly detects the remote
client's OpenGL abilities, supported features, extensions, etc...  But,
having detected such, it still tries to load a local client -- swrast seems to
be the default but why it is loading when it isn't rendering locally isn't
clear (maybe it's a default?)

I note, that another remote technology XDMCP (I'm just using DISPLAY 
forwarded back to the host over tcp) also stopped working around the same time.
I don't know if it is related or not, but since it involves a  remote X
display, it seems possible.

This seems  to have started in my opensuse's,  post 12.1 release.

Current Mesa version is at 9.2.3. w/Xorg-x11 @ 7.6_1 in opensuse 13.1.

I did report it this to open suse, but they claim remote display of opengl is
not something they can support -- but it used to be a supported technology that
worked.


glxinfo displays:

> LIBGL_DEBUG=verbose glxinfo 2>&1       
name of display: athenae.hs.tlinx.org:0
libGL: OpenDriver: trying /usr/lib64/dri/updates/tls/swrast_dri.so
libGL: OpenDriver: trying /usr/lib64/dri/updates/swrast_dri.so
libGL: Can't open configuration file /home/law/.drirc: No such file or
directory.
libGL error: failed to load driver: swrast
display: athenae.hs.tlinx.org:0  screen: 0
direct rendering: No (If you want to find out why, try setting
LIBGL_DEBUG=verbose)
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
   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_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,   
GLX_SGI_make_current_read, GLX_SGI_swap_control
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
   GLX_ARB_create_context, GLX_ARB_create_context_profile,   
GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float,   
GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample,   
GLX_EXT_create_context_es2_profile, GLX_EXT_fbconfig_packed_float,   
GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context,   
GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating,   
GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer,   
GLX_MESA_multithread_makecurrent, GLX_MESA_swap_control,   
GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGIS_multisample,   
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group,   
GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync
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_multithread_makecurrent, GLX_OML_swap_method,    GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,    GLX_SGI_make_current_read,
GLX_SGI_swap_control
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce GTX 590/PCIe/SSE2
OpenGL version string: 1.4 (4.4.0)
OpenGL extensions:
   GL_ARB_depth_texture, GL_ARB_draw_buffers, GL_ARB_fragment_program,   
GL_ARB_fragment_program_shadow, GL_ARB_framebuffer_object, 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_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_texture_rg, GL_ARB_transpose_matrix,
GL_ARB_vertex_program,    GL_ARB_window_pos, GL_ATI_draw_buffers,
GL_ATI_texture_float,    GL_ATI_texture_mirror_once, 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_draw_range_elements,    GL_EXT_fog_coord, GL_EXT_framebuffer_blit,
GL_EXT_framebuffer_multisample,    GL_EXT_framebuffer_object,
GL_EXT_framebuffer_sRGB,    GL_EXT_multi_draw_arrays,
GL_EXT_packed_depth_stencil,    GL_EXT_packed_pixels, 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_compression_dxt1,    GL_EXT_texture_compression_s3tc,
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,
GL_EXT_texture_lod_bias, GL_EXT_texture_mirror_clamp,    GL_EXT_texture_object,
GL_EXT_texture_rectangle, GL_EXT_vertex_array,    GL_IBM_rasterpos_clip,
GL_IBM_texture_mirrored_repeat,    GL_INGR_blend_func_separate,
GL_NV_blend_square,    GL_NV_copy_depth_to_color, GL_NV_depth_clamp,
GL_NV_fog_distance,    GL_NV_fragment_program, GL_NV_fragment_program2,   
GL_NV_fragment_program_option, GL_NV_light_max_exponent,   
GL_NV_multisample_filter_hint, GL_NV_packed_depth_stencil,   
GL_NV_point_sprite, GL_NV_texgen_reflection,    GL_NV_texture_compression_vtc,
GL_NV_texture_env_combine4,    GL_NV_texture_rectangle, GL_NV_vertex_program,
GL_NV_vertex_program1_1,    GL_NV_vertex_program2,
GL_NV_vertex_program2_option,    GL_NV_vertex_program3,
GL_SGIS_generate_mipmap,    GL_SGIS_texture_border_clamp,
GL_SGIS_texture_edge_clamp,    GL_SGIS_texture_lod, GL_SGIX_depth_texture,
GL_SGIX_shadow,    GL_SUN_multi_draw_arrays, GL_SUN_slice_accum

====
Any help in tracking this down and/or getting this working would be great!

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