Ubuntu
mesa package

  1. Bug #2037497
  2. Comment #7

Comment 7 for bug 2037497

Revision history for this message
Daniel van Vugt (vanvugt) wrote : Re: gnome-shell crashed with SIGSEGV in ?? (iris_dri.so) from end_query() from cogl_gl_create_timestamp_query() from cogl_onscreen_egl_swap_buffers_with_damage()

It appears 'pipe' is NULL in the Mesa source at:

static void
end_query(struct gl_context *ctx, struct gl_query_object *q)
{
   struct st_context *st = st_context(ctx);
   struct pipe_context *pipe = ctx->pipe;
   bool ret = false;

   st_flush_bitmap_cache(st_context(ctx));

   if ((q->Target == GL_TIMESTAMP ||
        q->Target == GL_TIME_ELAPSED) &&
       !q->pq) {
      q->pq = pipe->create_query(pipe, PIPE_QUERY_TIMESTAMP, 0);
      q->type = PIPE_QUERY_TIMESTAMP;
   }

I can't reproduce the problem myself so I wonder are you using two GPUs? Do you have a monitor plugged into an Nvidia GPU?