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Recently I was unable to open Settings in Ubuntu 19.10
I tried to reinstall gnome-control-center, but didn't work.
I cannot open system settings in ubuntu 17.10
It doesnt open the Users Settings, System Settings
Cannot open gnome-control-center in ubuntu 17.04

This is the output in terminal

When running in superuser # gnome-control-center Bail out! ERROR:../shell/cc-shell-model.c:458:cc_shell_model_set_panel_visibility: assertion failed: (valid)
When running in normal user $ gnome-control-center /sys/firmware/dmi/tables/smbios_entry_point: Permission denied /dev/mem: Permission denied Segmentation fault (core dumped)

EDIT: Working Solution - Settings not opening on Ubuntu 19.10

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  • "This it the output" - knowing what command was executed might help us understand more clearly (and allow us to try the command on our boxes so we have a comparison of normal messages etc), but I get the sense that you've added packages for another release, or intended for another OS (thus ABI/API breakage & segfaults) , but it could also memory failure (which wouldn't be very consistent) & many other things.
    – guiverc
    Dec 29, 2019 at 5:13
  • @guiverc added the command. and btw, I installed xfce4. Is that the problem then?
    – Nusry
    Dec 29, 2019 at 5:16
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    Does this answer your question? Settings not opening on Ubuntu 19.10
    – vanadium
    Dec 29, 2019 at 11:55
  • @vanadium It has a part of the solution. It doesn't solve the 'Devices' section in settings issue
    – Nusry
    Jan 6, 2020 at 14:27

1 Answer 1

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Found the solution from this question:
Settings not opening on Ubuntu 19.10

And it is to reset the last panel using this command:
gsettings set org.gnome.ControlCenter last-panel ''
and installing hidpi-daemon for Devices section in settings
sudo apt install hidpi-daemon

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