NM failed to initialize WiFi driver (after boot/ return from suspend)

[Vincent Thiele]

Since 15.10 my network is not working because of this bug.
I got this error:
Nov 22 03:45:23 arbeits-pc NetworkManager[685]: <warn> (wlan0): failed to initialize WiFi driver
Nov 22 03:45:23 arbeits-pc NetworkManager[685]: <warn> wlan0: factory failed to create device: (unknown)
Nov 22 03:45:23 arbeits-pc NetworkManager[685]: (NetworkManager:685): GLib-GObject-CRITICAL **: object NMDeviceWifi 0xeda450 finalized while still in-construction
Nov 22 03:45:23 arbeits-pc NetworkManager[685]: (NetworkManager:685): GLib-GObject-CRITICAL **: Custom constructor for class NMDeviceWifi returned NULL (which is invalid). Please use GInitable instead.
Nov 22 03:45:23 arbeits-pc NetworkManager[685]: <info> wpa_supplicant running
Nov 22 03:45:23 arbeits-pc NetworkManager[685]: <info> devices added (path: /sys/devices/pci0000:00/0000:00:1a.0/usb5/5-1/5-1.4/5-1.4:1.0/net/wlxf81a67191694, iface: wlxf81a67191694)
Nov 22 03:45:23 arbeits-pc NetworkManager[685]: <info> device added (path: /sys/devices/pci0000:00/0000:00:1a.0/usb5/5-1/5-1.4/5-1.4:1.0/net/wlxf81a67191694, iface: wlxf81a67191694): no ifupdown configuration found.

Only workaround: sudo systemctl restart network-manager.service

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: network-manager 1.0.4-0ubuntu5.1
ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
Uname: Linux 4.2.0-18-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Nov 22 11:23:48 2015
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-11-21 (0 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
IpRoute:
 default via 192.168.1.1 dev wlxf81a67191694 proto static metric 600
 169.254.0.0/16 dev wlxf81a67191694 scope link metric 1000
 192.168.1.0/24 dev wlxf81a67191694 proto kernel scope link src 192.168.1.126 metric 600
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
RfKill:

SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH
 wlxf81a67191694 wifi connected /org/freedesktop/NetworkManager/Devices/2 WG-WLAN c2683c87-f2df-40a9-b40b-d2b4ec6f1d12 /org/freedesktop/NetworkManager/ActiveConnection/0
 eno1 ethernet unavailable /org/freedesktop/NetworkManager/Devices/0 -- -- --
 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/1 -- -- --
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.

[Vincent Thiele (vincentthiele)]

This error is in the systemd boot logs: nm_device_get_device_type: assertion 'NM_IS_DEVICE (self)' failed

[Launchpad Janitor (janitor)]

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

[Ferhat (ferhat-akguen)]

It seems to be the cause of my problem:
http://askubuntu.com/questions/742347/wifi-r8712u-is-only-working-after-doing-rmmod-modprobe

ar 5 21:28:12 ferhat-X58A-UD5 NetworkManager[882]: <info> urfkill disappeared from the bus
Mar 5 21:28:12 ferhat-X58A-UD5 NetworkManager[882]: <info> ofono is now available
Mar 5 21:28:12 ferhat-X58A-UD5 NetworkManager[882]: <warn> failed to enumerate oFono devices: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.ofono was not provided by any .service files
Mar 5 21:28:12 ferhat-X58A-UD5 NetworkManager[882]: <info> ModemManager available in the bus
Mar 5 21:28:12 ferhat-X58A-UD5 NetworkManager[882]: <info> wpa_supplicant running
Mar 5 21:28:13 ferhat-X58A-UD5 NetworkManager[882]: <error> [1457209693.030273] [platform/wifi/wifi-utils-wext.c:519] wext_get_range(): (wlan0): couldn't get driver range information (19).
Mar 5 21:28:13 ferhat-X58A-UD5 NetworkManager[882]: <info> (wlan0): driver WEXT range request failed
Mar 5 21:28:13 ferhat-X58A-UD5 NetworkManager[882]: <warn> (wlan0): failed to initialize WiFi driver
Mar 5 21:28:13 ferhat-X58A-UD5 NetworkManager[882]: (NetworkManager:882): GLib-GObject-CRITICAL **: object NMDeviceWifi 0xfa83d0 finalized while still in-construction
Mar 5 21:28:13 ferhat-X58A-UD5 NetworkManager[882]: (NetworkManager:882): GLib-GObject-CRITICAL **: Custom constructor for class NMDeviceWifi returned NULL (which is invalid). Please use GInitable instead.
Mar 5 21:28:13 ferhat-X58A-UD5 NetworkManager[882]: <warn> wlan0: factory failed to create device: (unknown)
Mar 5 21:28:13 ferhat-X58A-UD5 NetworkManager[882]: <info> devices added (path: /sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0/net/wlx0087401008be, iface: wlx0087401008be)
Mar 5 21:28:13 ferhat-X58A-UD5 NetworkManager[882]: <info> device added (path: /sys/devices/pci0000:00/0000:00:1a.7/usb1/1-4/1-4:1.0/net/wlx0087401008be, iface: wlx0087401008be): no ifupdown configuration found.
Mar 5 21:28:17 ferhat-X58A-UD5 NetworkManager[882]: <info> startup complete