can't open system settings(Ubuntu 17.10), icon is visible but settings don't display

Bug #1721637 reported by Andriy Chekhovych on 2017-10-05
42
This bug affects 9 people
Affects Status Importance Assigned to Milestone
gnome-control-center (Ubuntu)
Low
roman dovhan

Bug Description

When i click on system settings, icon is displaying but settings window doesn't visible. I have already reinstalled ubuntu desktop and gnome-control-center, but without any success.(reboot also didn't help).If i try to open gnome-control-center in terminal the same result only icon appearce

screenshot show modal, but i can not see it

Cleber Cassol (ccassol) wrote :

I'm having the same problem. Started soon after I changed the dock position from left to bottom. Have already tried to reinstall gnome-control-center, but to no avail. Rebooting won't help either.

Cleber Cassol (ccassol) wrote :

I believe I know what's happening: it looks like Ubuntu created a virtual screen. If I put my mouse pointer to the right, it vanishes the same way it does when there's a second monitor/screen attached to the system. Don't know how it happened, though, since I haven't changed my screen resolution or displays.

Cleber Cassol (ccassol) wrote :

Ok, a little workaround did restore the System Settings for me (assuming one had this problem after changing the dock position just like me):

- sudo apt install dconf-editor
- Navigate to org>gnome>shell-extensions>dash-to-dock>dock-position
- Restore dock position to it's default value

System Settings is working properly now. However, my mouse cursor still disappears if I move it to the screen edge to the right.

Viale Fabrice (viale-fabrice) wrote :

Same problem, and no apparent virtual screen is present.

Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in gnome-control-center (Ubuntu):
status: New → Confirmed
Viale Fabrice (viale-fabrice) wrote :

I have deactivated all the gnome extensions. Rebooting and the control center launch normally... So it's a workaround, before I isolate what is exactly the problem and possibly the extension (if only one is implicated).

Cleber Cassol (ccassol) wrote :

I don't know if it's related or not to the problem, but here it goes. I'm using Ubuntu 17.10 on a laptop that has a Nvidia 540M GPU and also an onboard Intel GPU. It seems Ubuntu is assigning a monitor for each (there's an unknown second monitor on my setup and I have no idea where it came from).

In the end, my solution was disabling that unknown monitor. That made the "virtual screen" I was referring to before disappear and the system settings app to work again. But, oddly, it only began malfunctioning after I moved the dock to the bottom position.

Sebastien Bacher (seb128) wrote :

The description and comments are a bit confusing. Does it has to do with misconfiguration of scrreens? Or a gnome-shell extension?
The screenshot in #comment1 looks right, what's the issue on it?

Changed in gnome-control-center (Ubuntu):
importance: Undecided → Low
status: Confirmed → Incomplete
Adrian Apthorp (adrian-w) wrote :

I had the same issue. In my case it turned out that gnome-control-center had been uninstalled. I'm not sure why, but reinstalling fixed it.

Dear friends
I have the same problem as you had. I read all the comments but I am new to ubuntu and sometimes I don't understand what you are talking about (technically speaking). For example, what does it mean:

- Navigate to org>gnome>shell-extensions>dash-to-dock>dock-position
- Restore dock position to it's default value

Is is a piece of code? Drag and drop? How do I navigate? or ...? (@Cleber Cassol). or how can I disable the unknown monitor (I have it as well) ? (@Cleber Cassol)?

I did everything to the best of my knowledge and based on the search results on the net but whenever I try to start setting a column blinks in the right side of the screen and nothing happens. Please help me since I am totally novice and can't go further into technical details.

Thanks

Hi!

To disable the phantom monitor, hit the super key (the one with the Windows
logo on it), the type Display. The app that handles the displays will be
shown, click on it. Once there, you're see two monitors, the real one to
the left and the phantom one to the right. Click on it and disable it
choosing the appropriate control (I don't have Ubuntu installed anymore, so
I'm telling you this by memory). It should be labeled "Activate", "Enabled"
or something similar.

Hope this helps!

Em dom, 7 de jan de 2018 20:50, Meysam Majnooni <email address hidden>
escreveu:

> Dear friends
> I have the same problem as you had. I read all the comments but I am new
> to ubuntu and sometimes I don't understand what you are talking about
> (technically speaking). For example, what does it mean:
>
> - Navigate to org>gnome>shell-extensions>dash-to-dock>dock-position
> - Restore dock position to it's default value
>
> Is is a piece of code? Drag and drop? How do I navigate? or ...?
> (@Cleber Cassol). or how can I disable the unknown monitor (I have it as
> well) ? (@Cleber Cassol)?
>
> I did everything to the best of my knowledge and based on the search
> results on the net but whenever I try to start setting a column blinks
> in the right side of the screen and nothing happens. Please help me
> since I am totally novice and can't go further into technical details.
>
> Thanks
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1721637
>
> Title:
> can't open system settings(Ubuntu 17.10), icon is visible but
> settings don't dislay
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1721637/+subscriptions
>

I am also experiencing this issue, when I click on settings it "loads" for a few seconds but nothing is displayed.

Alex (topic001) wrote :

вот же говно

Alex (topic001) wrote :

in dconf-editor everything is by default
gnome-control-center is not installed

still can not open:

- RMC-> Change background
- system settings window

how is it possible for the OS not to open system settings???

honestly i am frustrating with ubuntu

Alex (topic001) wrote :

back to confirmed and fix the problem

I installed Ubuntu 17.10.1 today on my laptop, and got the same problem. Opened settings and moved the dock to the bottom, and the settings window just disappeared. The answer given in the following link helped me to disable the second virtual monitor from the command line, and restored the settings window back to my normal laptop screen view:

Link: https://askubuntu.com/questions/366813/disable-second-non-existent-screen-from-command-line

Of course, this second monitor may come up again when you restart your machine, so it would be a good option to follow the latter part of the answer in above link, and put the command in a script which you can schedule to run at startup. This is a workaround though, and this not the proper fix, which hopefully may come in a future update/patch.

summary: can't open system settings(Ubuntu 17.10), icon is visible but settings
- don't dislay
+ don't display
David LaCivita (dlaciv12) wrote :

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!

Ales Kvapil (aleskva) wrote :

I started settings after installation and it worked. But when I clicked on Users tab, it freezed. So I clicked wait twice and then force close. Then I reinstalled and settings didn't work anymore.

I reinstalled gnome, disabled tweak extensions, removed .config and .cache and .local from home dir. After that gnome settings started to work again. From my testing there was some bug in .local settings as this was that that finally helped me.

Jeremy Bicha (jbicha) wrote :

David and Ales, please file new bugs since it's not clear that your bugs are the same as this bug.

Jeremy Bicha (jbicha) wrote :

Please run this command to file the bug so that information about your system is included that can help bug triage:

ubuntu-bug gnome-control-center

alireza (sarbazi) wrote :

Hello, 4 me the problem is solved after installing gnome-control-center.

sudo apet-get install gnome-control-center

roman dovhan (dovhanrg) on 2018-05-14
Changed in gnome-control-center (Ubuntu):
assignee: nobody → roman dovhan (dovhanrg)
roman dovhan (dovhanrg) wrote :

Here is how settings is "displayed", when control panel is in bottom of the display.

Pemba Tamang (pemba) wrote :

(@Cleber Cassol) This is an year old issue but I had the same problem yesterday. So I did what you said, I used the dconf editor and set the dock to left and the the system settings started working again. I also had the problem where my mouse was disappearing to the right. I opened
'Settings>Devices>Displays' where I saw that the Display Mode was set to 'Join Displays' by default. I changed it 'Single Display' and now the mouse works properly. I am using ubuntu on a lenovo G580 laptop and my BIOS is inaccessible. It seems ubuntu and lenovo don't work well there have been many similar issue. Forunaely my laptop boots properly I just can't access the BIOS, many however are not so lucky...

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