# run this command and then the 'ls' command detailed further down once the
# install has completed
# the kernel version you see will be 3.19.xx 

sudo dkms install -m hp-wmi -v 1.01           

Kernel preparation unnecessary for this kernel.  Skipping...
applying patch bugzilla-69131.patch...patching file hp-wmi.c
Hunk #1 succeeded at 901 (offset 18 lines).


Building module:
cleaning build area....
make KERNELRELEASE=4.1.0+ -C /lib/modules/4.1.0+/build SUBDIRS=/var/lib/dkms/hp-wmi/1.01/build modules....
cleaning build area....

DKMS: build completed.

hp-wmi.ko:
Running module version sanity check.
 - Original module
 - Installation
   - Installing to /lib/modules/4.1.0+/updates/dkms/

depmod.......

DKMS: install completed.

# if you saw all the above output then...
# run this command to check the module is present
ls -al /lib/modules/$(uname -r)/updates/dkms/

-rw-r--r-- 1 root root    26264 Aug 18 23:41 hp-wmi.ko