gnome-control-center won't install in Ubuntu 20.04.2 LTS

[Linda]

I wanted to possibly change my sleep and suspend settings, but I could find no Settings, or Control Panel, or any type of basic system settings. I saw Tweaks and suggestions to install new apps about Power & Battery, etc, but isn't there supposed to be some sort of main system settings? Every other computer, other Linux flavors, and previous incarnations of Ubuntu had a settings console.

Also, in the top right if I click on the drop down arrow, then the right arrow beside "Fully Charged", then "Power Settings", nothing happens. Similarly, if I click on the right arrow beside "On", then "Bluetooth Settings", nothing happens.

prompt> sudo apt install gnome-control-center

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: gnome-control-center-data (< 1:3.37) but 1:3.38.2-1ubuntu1pop1~1609361000~20.04~f56ab3c is to be installed
                        Recommends: rygel but it is not going to be installed or
                                    rygel-tracker but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

[Gunnar Hjalmarsson (gunnarhj)]

Apparently you have had (or still have) ppa:system76/pop enabled. So you didn't find a bug, but possibly you need support:

https://ubuntu.com/support/community-support