Thanks for the update. This indicates an Ubuntu sauce patch is the cause of the regression.
To confirm this, can you test the v3.13.11-ckt39 upstream kernel? This is the kernel Ubuntu 3.13.0-101 is based on:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.11-ckt39-trusty/
Thanks for the update. This indicates an Ubuntu sauce patch is the cause of the regression.
To confirm this, can you test the v3.13.11-ckt39 upstream kernel? This is the kernel Ubuntu 3.13.0-101 is based on:
http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.13.11- ckt39-trusty/