This is what I got after running
1) sudo killall fwupd
2) sudo /usr/lib/x86_64-linux-gnu/fwupd/fwupd -v 2>&1 | tee fwupd_debug.log

21:57:58	Verbose debugging enabled (on console 0)
21:57:58	adding plugin /usr/lib/x86_64-linux-gnu/fwupd-plugins-1/libfu_plugin_steelseries.so
21:57:58	adding plugin /usr/lib/x86_64-linux-gnu/fwupd-plugins-1/libfu_plugin_test.so
21:57:58	performing init() on test
21:57:58	Loading fallback values from /etc/fwupd.conf
21:57:58	adding udev device: /sys/devices/pci0000:00/0000:00:02.0/0000:01:00.0
21:57:58	fixing GUID 0x10de:0x1040->693025a1-4a7d-53b8-864e-c7f3e5866ec0
21:57:58	emit added from Udev: ro__sys_devices_pci0000_00_0000_00_02_0_0000_01_00_0
Failed to coldplug: UEFI firmware updating not supported
***
21:57:58	Failed to coldplug: UEFI firmware updating not supported
***
21:57:58	emit added from USB: usb:00:04
21:57:58	emit added from USB: usb:00:03
###############################################################################        @0551ms AsStore:load 551ms
###############################################################################        @0551ms AsStore:load{per-system} 551ms
#                                                                                      @0005ms AsStore:app-info{/usr/share/app-info/xmls/org.freedesktop.fwupd.xml} 5ms
 #                                                                                     @0022ms AsStore:app-info{/var/lib/app-info/yaml/in.archive.ubuntu.com_ubuntu_dists_xenial_multiverse_dep11_Components-amd64.yml.gz} 11ms
 #                                                                                     @0022ms AsStore:store-from-file 11ms
   ###                                                                                 @0046ms AsStore:app-info{/var/lib/app-info/yaml/in.archive.ubuntu.com_ubuntu_dists_xenial-updates_main_dep11_Components-amd64.yml.gz} 23ms
   ###                                                                                 @0046ms AsStore:store-from-file 23ms
      ##########################################################                       @0452ms AsStore:app-info{/var/lib/app-info/yaml/in.archive.ubuntu.com_ubuntu_dists_xenial_universe_dep11_Components-amd64.yml.gz} 406ms
      ##########################################################                       @0452ms AsStore:store-from-file 406ms
                                                                 #############         @0547ms AsStore:app-info{/var/lib/app-info/yaml/in.archive.ubuntu.com_ubuntu_dists_xenial_main_dep11_Components-amd64.yml.gz} 94ms
                                                                 #############         @0547ms AsStore:store-from-file 94ms
                                                                                  ###  @0593ms FuMain:coldplug 24ms
                                                                                  ##   @0584ms FuMain:coldplug{Udev} 15ms
                                                                                  #    @0578ms FuProviderUdev:coldplug{usb} 9ms
                                                                                   #   @0584ms FuProviderUdev:coldplug{pci} 5ms
                                                                                    #  @0593ms FuMain:coldplug{USB} 8ms
                                                                                     # @0593ms FuProviderUsb:added{258a:0001} 5ms
21:57:58	FuMain: acquired name: org.freedesktop.fwupd
21:57:59	devices now in store:
21:57:59	1	com.steelseries.rival-legacy.firmware	Rival SteelSeries
21:57:59	2	UEFI-dummy-dev0	UEFI Updates
21:57:59	3	com.via.VL811.firmware	VL811 Firmware
21:57:59	4	com.via.VL811+.firmware	VL811+ Firmware
21:57:59	5	com.via.VL812.firmware	VL812 Firmware
21:57:59	6	com.via.VL812_B2.firmware	VL812 B2 Firmware
21:57:59	7	com.dell.uefi124c207d.firmware	XPS 15 9550/Precision 5510 System Update
21:57:59	8	com.dell.uefi33773727.firmware	XPS 13 9350 System Update
21:57:59	9	com.dell.uefi43ca3264.firmware	OptiPlex 7440 AIO System Update
21:57:59	10	com.dell.uefia0a3aa54.firmware	Embedded Box PC 5000 System Update
21:57:59	11	com.dell.uefiaee2604a.firmware	Embedded Box PC 3000 System Update
21:57:59	12	com.dell.uefie0f614ed.firmware	Edge Gateway 5000/5100 System Update
21:57:59	13	com.hughski.ColorHug.firmware	ColorHug
21:57:59	14	com.hughski.ColorHug2.firmware	ColorHug2
21:57:59	15	com.hughski.ColorHugALS.firmware	ColorHugALS