Comment 19 for bug 1721637

I'm experiencing this as well. When I try to install gnome-control-center I get:

sudo apt install gnome-control-center
dave@dave-K55A:~$ sudo apt install gnome-control-center
[sudo] password for dave:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 gnome-control-center : Depends: colord (>= 0.1.30)
E: Unable to correct problems, you have held broken packages.

I haven't fiddled with anything, I haven't moved the dock... How can I be missing colord, system settings? I've got to calibrate and profile a new monitor.

I'm not a noob, I just install or update and work. I don't mess with anything!