I've retested with the latest kernel on Mint 17.0, 3.13.46, and despite bug 76554 being marked as resolved and there being some signs that a fix may be backported into the 3.13 kernel series for Ubuntu.
So if 76554's fix is in kernel 3.13.0-46, then 76554 hasn't resolved the bug I raised here.
I've retested with the latest kernel on Mint 17.0, 3.13.46, and despite bug 76554 being marked as resolved and there being some signs that a fix may be backported into the 3.13 kernel series for Ubuntu.
So if 76554's fix is in kernel 3.13.0-46, then 76554 hasn't resolved the bug I raised here.