Comment 2 for bug 834037

Forgot to add that my command line arguments have been set by grub to include "acpi_osi=Linux i8042.reset=1" for all of the above kernel installs to ensure hardware fn-keys work as intended. Will test with other command line options recommended in this article to see if they have any effect: http://www.phoronix.com/scan.php?page=article&item=intel_i915_power&num=1