https://bugs.freedesktop.org/show_bug.cgi?id=60182
--- Comment #37 from Weber K. weberkai@yahoo.com.br --- Hi!
Here RESOLVED.
Sorry for late response, I needed to upgrade my whole system to current for testing.
I have the same "new" glxgears messages if closed clicking in the close button. If press esc or with pkill then no error in the console. I think this is caused by the way glxgears implement main loop.
Thank you very much!