I'm seeing the same on a freshly installed system. I'm seeing the same as Tyson in #8, where I can get all the attached devices as root but not as my user:
non-root: jinxos@XeistIII:~$ colormgr get-devices Object Path: /org/freedesktop/ColorManager/devices/cups_Pixma Owner: root Created: January 23 2016, 07:31:20 PM Modified: January 23 2016, 07:31:20 PM Type: printer Enabled: Yes Embedded: No Model: Canon MG6200 series Vendor: Canon Serial: cnijnet:/2C-9E-FC-8E-08-40 Format: ColorModel.MediaType.Resolution Scope: temp Colorspace: rgb Device ID: cups-Pixma Profile 1: Pixma-RGB.. Profile 2: Pixma-Gray.. Metadata: OwnerCmdline=/usr/sbin/cupsd -l root: jinxos@XeistIII:~$ sudo colormgr get-devices [sudo] password for jinxos: Object Path: /org/freedesktop/ColorManager/devices/xrandr_Hewlett_Packard_HP_Z27x_CNK5330BRZ_gdm_120 Owner: gdm Created: January 23 2016, 05:56:15 PM Modified: January 23 2016, 10:43:19 PM Type: display Enabled: Yes Embedded: No Model: HP Z27x Vendor: Hewlett Packard Serial: CNK5330BRZ Seat: seat0 Scope: temp Colorspace: rgb Device ID: xrandr-Hewlett Packard-HP Z27x-CNK5330BRZ Profile 1: icc-ecaa5c83fd2db8999f63cfa4f7478f00 /home/jinxos/.local/share/icc/HP Z27x #1 2016-01-23 22-35 D6500 2.2 M-S XYZLUT+MTX.icc Profile 2: icc-73c6ec25ff27e989e48440e4e149c742 /home/jinxos/.local/share/icc/edid-fb6327973b44c6bc9a4e23a17ac98bb7.icc Profile 3: icc-048a08b1c7a050523f138845412ce054 /var/lib/gdm/.local/share/icc/edid-fb6327973b44c6bc9a4e23a17ac98bb7.icc Metadata: XRANDR_name=DP-2 Metadata: OutputPriority=primary Metadata: OwnerCmdline=/usr/lib/gnome-settings-daemon/gnome-settings-daemon Metadata: OutputEdidMd5=fb6327973b44c6bc9a4e23a17ac98bb7 Object Path: /org/freedesktop/ColorManager/devices/cups_Pixma Owner: root Created: January 23 2016, 07:31:20 PM Modified: January 23 2016, 07:31:20 PM Type: printer Enabled: Yes Embedded: No Model: Canon MG6200 series Vendor: Canon Serial: cnijnet:/2C-9E-FC-8E-08-40 Format: ColorModel.MediaType.Resolution Scope: temp Colorspace: rgb Device ID: cups-Pixma Profile 1: Pixma-RGB.. Profile 2: Pixma-Gray.. Metadata: OwnerCmdline=/usr/sbin/cupsd -l Object Path: /org/freedesktop/ColorManager/devices/sane_Canon_PIXMA_MG6200 Owner: colord Created: January 23 2016, 07:31:47 PM Modified: January 23 2016, 07:31:47 PM Type: scanner Enabled: Yes Embedded: No Model: Canon PIXMA MG6200 Vendor: CANON Serial: pixma:MG6200_192.168.1.107 Scope: normal Colorspace: rgb Device ID: sane-Canon PIXMA MG6200 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1514990 Title: Primary screen not listed in Gnome color manager To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/colord/+bug/1514990/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs