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I recently upgraded to Ubuntu 19.10, but I'm not able to open Settings.

killall gnome-control-center

gives

gnome-control-center: no process found

And also my laptop is hanging many times, I had to press the power button every time to restart. 

gnome-control-center --verbose

gives

Segmentation fault (core dumped)

but gnome-control-center --version gives gnome-control-center 3.34.1

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5
  • 1
    Upgrade pain. In many cases, it is much better not to upgrade an existing install, but to freshly reinstall a new Ubuntu version.
    – vanadium
    Oct 26, 2019 at 9:35
  • Is there a way other than reinstalling?
    – learner
    Oct 26, 2019 at 14:41
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    What's the output of this command: echo $XDG_CURRENT_DESKTOP
    – Gunnar Hjalmarsson
    Oct 28, 2019 at 3:15
  • @Gunnar it say's ubuntu:GNOME
    – learner
    Oct 28, 2019 at 8:08
  • I'm not convinced this is upgrade related. Having the same issue on my freshly installed 19.10 machine.
    – Ceisc
    Dec 10, 2019 at 10:30

2 Answers 2

Reset to default
10

It also happened to me when I tried to open Devices section.

Someone pointed out that you can reset the last panel using a terminal:

gsettings set org.gnome.ControlCenter last-panel ''

It does not solve the Devices section issue.

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  • 1
    I have seen that problem on non-GNOME desktops - it's this bug.
    – Gunnar Hjalmarsson
    Oct 28, 2019 at 3:17
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    Thank you very much it worked
    – learner
    Oct 28, 2019 at 8:39
  • @GunnarHjalmarsson apparently there is a fix released... wondering when we may get it
    – Alexandre
    Oct 28, 2019 at 20:10
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    @Alexandre: That "fix released" is about non-GNOME desktops (i.e. not the case for the OP of this question), and the "fix" consists of a proper error message instead of segfaulting. Not sure about the status of the issue on GNOME desktops.
    – Gunnar Hjalmarsson
    Oct 28, 2019 at 22:28
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    @learner: Ah, that may explain it. AFAIK g-c-c requires bot gnome-shell and mutter to work as expected, but hidmi-damon might be a way to work around that requirement.
    – Gunnar Hjalmarsson
    Oct 29, 2019 at 4:54
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try to take a screenshot of your screen, and look at the picture. If the setting is on the right side of the screen that means you have accidentally opened a join screen. You can search for turning a join screen from the terminal. Hope this would help.

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    May you edit your answer and explain a bit more about what a "join screen" is? Also, what you mean by "turning a join screen from terminal"? A screen shot may be helpful.
    – Gordster
    Mar 25, 2020 at 8:32
  • when I took a screenshot of my screen, it shows me that there were another that is functioning in which my settings windows are opened there. So what I am suggesting is that: first, take a screenshot of your screen and if you see an elonged photo of your screen that shows your settings window, if you see it then you can google the code to turn another screen off.
    – Ziya Alim
    Apr 25, 2020 at 12:23

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