https://bugzilla.kernel.org/show_bug.cgi?id=113861
--- Comment #5 from centuryplague@yandex.com --- I've attached my dmesg run under 4.1.18 LTS. This was a boot under a regular user (user doesn't matter, happens with root), and first command was "startx", which polls eternally, the CTRL+C 500 times, then saved dmesg output.
There is no xorg log produced in any location.