Christopher, I installed the kernel from Wily release and the problem is still there: the computer hangs just before shutting down.
$ uname -a Linux 4.2.0-30-generic #36~14.04.1-Ubuntu SMP Fri Feb 26 18:49:23 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Christopher, I installed the kernel from Wily release and the problem is still there: the computer hangs just before shutting down.
$ uname -a
Linux 4.2.0-30-generic #36~14.04.1-Ubuntu SMP Fri Feb 26 18:49:23 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux