Public bug reported:
After upgrading ubuntu desktop from 19.10 to 20.04, it's impossible to enable
screen sharing.
It used to work fine on 19.10.
When clicking the enable/disable toggle, the following message is logged
in journalctl:
Failed to enable service vino-server:
GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Sharing cannot be
enabled on this network, status is '0'
This is reproducible on both computers I've upgraded. They're both on
the latest 20.04 package updates as of today.
I've done some research to rule out common faults:
$ cat /etc/netplan/01-network-manager-all.yaml
# Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
(Yes, I've ofc ran netplan apply, but the file already had this content
anyway.)
$ cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
Also, this seems unrelated to #1871787:
$ dpkg -l |grep gnome-settings-daemon
ii gnome-settings-daemon 3.36.0-1ubuntu2
ii gnome-settings-daemon-common 3.36.0-1ubuntu2
** Affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1876884
Title:
Unable to enable screen sharing after upgrade to 20.04
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