I tried an older upstream kernel (v4.0-vivid) and the errant log messages do not appear:
$ uname -r 4.0.0-040000-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1492632 Title: [Ubuntu 15.10] Intel Display i915 driver crashes, Asus Zenbook 303LA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1492632/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs