It looks like the current kernel on this system is 3.16.0-23. Can you apply the latest updates and see if this issue still happens with the latest kernel in -updates, which is 3.13.0-37.64.
It looks like the current kernel on this system is 3.16.0-23. Can you apply the latest updates and see if this issue still happens with the latest kernel in -updates, which is 3.13.0-37.64.