#0  g_logv (log_domain=log_domain@entry=0x7f644889f96a "Cogl", log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=<optimised out>, args=<optimised out>) at /build/buildd/glib2.0-2.37.0/./glib/gmessages.c:981
  [Error: /build/buildd/glib2.0-2.37.0/./glib/gmessages.c was not found in source tree]
#1  0x00007f64488972b1 in _cogl_set_error (error=error@entry=0x0, domain=<optimised out>, code=code@entry=0, format=format@entry=0x7f644889f8c8 "Failed to create an OpenGL framebuffer object") at ./cogl-error.c:78
  [Error: ./cogl-error.c was not found in source tree]
#2  0x00007f644884542d in _cogl_offscreen_gl_allocate (offscreen=0x39039c0, error=0x0) at ./driver/gl/cogl-framebuffer-gl.c:844
  [Error: ./driver/gl/cogl-framebuffer-gl.c was not found in source tree]
#3  0x00007f644888ef39 in cogl_framebuffer_allocate (framebuffer=framebuffer@entry=0x39039c0, error=error@entry=0x0) at ./cogl-framebuffer.c:727
  [Error: ./cogl-framebuffer.c was not found in source tree]
#4  0x00007f6448844e2d in _cogl_framebuffer_gl_flush_state (draw_buffer=0x39039c0, read_buffer=0x39039c0, state=(COGL_FRAMEBUFFER_STATE_BIND | COGL_FRAMEBUFFER_STATE_VIEWPORT | COGL_FRAMEBUFFER_STATE_DITHER | COGL_FRAMEBUFFER_STATE_PROJECTION | COGL_FRAMEBUFFER_STATE_COLOR_MASK | COGL_FRAMEBUFFER_STATE_FRONT_FACE_WINDING)) at ./driver/gl/cogl-framebuffer-gl.c:311
  [Error: ./driver/gl/cogl-framebuffer-gl.c was not found in source tree]
#5  0x00007f644888d96e in _cogl_journal_flush (journal=0x3838da0) at ./cogl-journal.c:1313
  [Error: ./cogl-journal.c was not found in source tree]
#6  0x00007f644888eb2c in _cogl_framebuffer_flush_journal (framebuffer=<optimised out>) at ./cogl-framebuffer.c:595
  [Error: ./cogl-framebuffer.c was not found in source tree]
#7  0x00007f644885bf38 in cogl_flush () at ./cogl.c:314
  [Error: ./cogl.c was not found in source tree]
#8  0x00007f64488916c0 in cogl_onscreen_swap_buffers (onscreen=0x1a3d9d0) at ./cogl-onscreen.c:184
  [Error: ./cogl-onscreen.c was not found in source tree]
#9  0x00007f644cecd075 in clutter_stage_cogl_redraw (stage_window=0x18cc2f0) at ./cogl/clutter-stage-cogl.c:643
  [Error: ./cogl/clutter-stage-cogl.c was not found in source tree]
#10 0x00007f644cf30513 in clutter_stage_do_redraw (stage=0x1a50f70) at ./clutter-stage.c:1180
  [Error: ./clutter-stage.c was not found in source tree]
#11 _clutter_stage_do_update (stage=0x1a50f70) at ./clutter-stage.c:1238
  [Error: ./clutter-stage.c was not found in source tree]
#12 0x00007f644cf16f78 in master_clock_update_stages (master_clock=0x1998a00, stages=0x3130970) at ./clutter-master-clock.c:457
  [Error: ./clutter-master-clock.c was not found in source tree]
#13 clutter_clock_dispatch (source=source@entry=0x19a0df0, callback=<optimised out>, user_data=<optimised out>) at ./clutter-master-clock.c:589
  [Error: ./clutter-master-clock.c was not found in source tree]
#14 0x00007f644bb32226 in g_main_dispatch (context=0x146f920) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3058
  [Error: /build/buildd/glib2.0-2.37.0/./glib/gmain.c was not found in source tree]
#15 g_main_context_dispatch (context=context@entry=0x146f920) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3634
  [Error: /build/buildd/glib2.0-2.37.0/./glib/gmain.c was not found in source tree]
#16 0x00007f644bb32578 in g_main_context_iterate (context=0x146f920, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimised out>) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3705
  [Error: /build/buildd/glib2.0-2.37.0/./glib/gmain.c was not found in source tree]
#17 0x00007f644bb3297a in g_main_loop_run (loop=0x1472430) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3899
  [Error: /build/buildd/glib2.0-2.37.0/./glib/gmain.c was not found in source tree]
#18 0x00007f644dad9bb1 in meta_run () at core/main.c:556
  [Error: core/main.c was not found in source tree]
#19 0x0000000000401c19 in main (argc=1, argv=0x7fffdedbb408) at main.c:430
  425:   if (session_mode == NULL)
  426:     session_mode = is_gdm_mode ? "gdm" : "user";
  427: 
  428:   _shell_global_init ("session-mode", session_mode, NULL);
  429: 
  430:   ecode = meta_run ();
  431: 
  432:   if (g_getenv ("GNOME_SHELL_ENABLE_CLEANUP"))
  433:     {
  434:       g_printerr ("Doing final cleanup...\n");
  435:       g_object_unref (shell_global_get ());