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On 2017-09-24T14:38:38+00:00 Zdzichu wrote:

Sumary says it all. The ON/OFF switch in screen sharing tab is stuck in
OFF position and is not reacting to clicks. Thus, screen sharing cannot
be enabled.

Logs show only:
2017-09-24T16:11:34+0200 mother.pipebreaker.pl gnome-control-c[25851] Failed to 
enable service vino-server: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: 
Sharing cannot be enabled on this network, status is '0'

control-center-3.26.0-1.fc27.x86_64
vino-3.22.0-4.fc27.x86_64

Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-control-
center/+bug/1733322/comments/0

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On 2017-11-22T13:18:47+00:00 Emil Styrke wrote:

This happens to me as well.  In my case it is because I have only wired
network access, but the network connection is "unmanaged" by
NetworkManager (and does not show up on the networks page of gnome-
control-center).  This in turn leads to the networks list in the sharing
dialog being empty.

I had to jump through various hoops to get NetworkManager to manage the
wired connection (I'm running Ubuntu 17.10 'Artful'), but as soon as the
connection showed up on the networks page, the sharing dialog started
working too.

This exact same issue also affects the file sharing dialog, btw.

Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-control-
center/+bug/1733322/comments/4

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On 2017-11-22T16:37:07+00:00 Jeremy Bicha wrote:

To clarify, Emil installed Ubuntu 17.10 starting from a server install
which I believe does not use NetworkManager by default. I believe the
vast majority of people using Ubuntu won't be affected by this issue.

https://launchpad.net/bugs/1733322

Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-control-
center/+bug/1733322/comments/7

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On 2017-12-18T21:22:37+00:00 45you-pop999grunt wrote:

I have this problem too for my wired connection only.
It is managed by Network Manager and yet it doesn't appear on the the Network 
List.
If I connect to a Wifi network that will appear on the list and allow me to 
toggle on/off.

Ubuntu 17.10 (not headless server edition!)
vino 3.8.1-0ubuntu12
gnome 3.26

Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-control-
center/+bug/1733322/comments/8

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On 2017-12-18T21:46:26+00:00 45you-pop999grunt wrote:

I have tried the workaounds listed here
https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1733322

> 1. Change "managed=false" to "managed=true" in 
> /etc/NetworkManager/NetworkManager.conf as suggested in 
> https://askubuntu.com/a/2905
> 2. Touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf as 
> suggested in 
> https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1676547
> 3. Change renderer to NetworkManager in /etc/netplan/01-netcfg.yaml

(I didn't need to do 3 as it was already set like that)

But its still broken.

Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-control-
center/+bug/1733322/comments/9

------------------------------------------------------------------------
On 2017-12-19T16:59:45+00:00 45you-pop999grunt wrote:

Just realized I have the same error in my syslog as Tomasz:

gnome-control-c[27434]: Failed to enable service vino-server:
GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Sharing cannot be
enabled on this network, status is '0'

Reply at: https://bugs.launchpad.net/ubuntu/+source/gnome-control-
center/+bug/1733322/comments/10


** Changed in: gnome-control-center
       Status: Unknown => Confirmed

** Changed in: gnome-control-center
   Importance: Unknown => Medium

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/1733322

Title:
  Unable to enable file or screen sharing with unmanaged network
  connection

Status in gnome-control-center:
  Confirmed
Status in gnome-control-center package in Ubuntu:
  Triaged

Bug description:
  I have installed Ubuntu Server 17.10.  At request from a colleague I
  then tried to install ubuntu-desktop and enable screen sharing.
  However, this did not work as expected.  When trying to enable screen
  sharing (same goes for file sharing), the enable button just jumps
  straight back to disabled when toggling it.  I assumed this had
  something to do with the fact that the "networks" list at the bottom
  of the sharing dialog was empty. This appears in the syslog when
  trying to toggle:

  Nov 20 11:31:06 bcubuntu3 gnome-control-c[1054]: Failed to enable
  service vino-server:
  GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Sharing cannot be
  enabled on this network, status is '0'

  This computer has only a single wired network connection (no wifi).
  This connection shows in the system menu as "Wired unmanaged" which
  seems to be the reason that it doesn't show up in the sharing dialogs.

  As a workaround, I tried the following things:

  1. Change "managed=false" to "managed=true" in 
/etc/NetworkManager/NetworkManager.conf as suggested in 
https://askubuntu.com/a/2905
  2. Touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf as 
suggested in 
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1676547
  3. Change renderer to NetworkManager in /etc/netplan/01-netcfg.yaml

  1 and 2 was not enough to get NetworkManager to manage the wired
  interface, but 3, possibly together with one or both of the previous
  steps did the trick.

  When I finally got NetworkManager to manage the wired connection, it
  did show up in the sharing dialogs, and I was able to enable screen
  sharing. However, it would seem reasonable to be able to enable
  sharing even on unmanaged interfaces by some mechanism, especially
  since unmanaged interfaces seem to be the norm these days.

  ~$ lsb_release -rd
  Description:    Ubuntu 17.10
  Release:        17.10

  gnome-control-center:
    Installed: 1:3.26.1-0ubuntu5
    Candidate: 1:3.26.1-0ubuntu5
    Version table:
   *** 1:3.26.1-0ubuntu5 500
          500 http://se.archive.ubuntu.com/ubuntu artful-updates/main amd64 
Packages
          100 /var/lib/dpkg/status
       1:3.26.1-0ubuntu4 500
          500 http://se.archive.ubuntu.com/ubuntu artful/main amd64 Packages

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