[Bug 1568560] Re: nm_device_get_device_type: assertion 'NM_IS_DEVICE (self)' failed

[Diego Diniz L. de Oliveira]

Guys...I got this problem solved by running these commands...

Install WICD to manage the network

sudo apt-get install wicd-gtk

Stop and disable Network-Manager

sudo systemctl stop NetworkManager.service
sudo systemctl disable NetworkManager.service

and uninstall avahi-autoipd and isc-dhcp-client using synaptic

But now I'm having two problems, one, system setting is not working
'cause NetworkManager is disabled, two wicd sets a random ip even it's
configured as static so when I turn on the system or restart it, I have
to disconnect and connect again to wicd recognize the righ ip.

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https://bugs.launchpad.net/bugs/1568560

Title:
  nm_device_get_device_type: assertion 'NM_IS_DEVICE (self)' failed

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