I added the tag "kernel-bug-exists-upstream". To answer your questions:
(1) The problem has always existed - on Ubuntu 12.04, 14.04 and 16.04. (2) The new kernel (4.6) doesn't appear to make any difference.
I added the tag "kernel- bug-exists- upstream" . To answer your questions:
(1) The problem has always existed - on Ubuntu 12.04, 14.04 and 16.04.
(2) The new kernel (4.6) doesn't appear to make any difference.