touchpad setting missing when using a wireless keyboard with touchpad

[Krister Swenson]

1. Plug in a wireless keyboard with a built-in trackpad (I have the logitech K400 Plus).
2. open dconf-editor
3. go to org > gnome > settings-daemon > peripherals
4. see that there is no "touchpad" entry

My laptop has a touchpad entry that allows me to adjust touchpad-specific parameters.
I would expect these to show up with the wireless keyboard/touchpad.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: dconf-cli 0.24.0-2
ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
Uname: Linux 4.2.0-23-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Jan 9 14:41:02 2016
InstallationDate: Installed on 2015-09-30 (100 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
JournalErrors:
 No journal files were found.
 -- No entries --
SourcePackage: d-conf
UpgradeStatus: Upgraded to wily on 2015-11-01 (68 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.