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Thread: 17.04 updrade wired ethernet show 'device not managed'

  1. #1
    Join Date
    May 2011
    Beans
    40

    17.04 updrade wired ethernet show 'device not managed'

    Hi,

    I upgraded to 17.04 yesterday and now my Qualcom Atheros Killer E2400 Gigabit Ethernet controllers are not working. Network Manager tells me that the devices are not managed. Wireless works, but wired does not. Previous to the upgrade, wireless was disabled and all networking went over the wired connections. No problems.

    ifconfig -a shows

    Code:
    enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.1.7  netmask 255.255.255.0  broadcast 192.168.1.255
            inet6 fe80::82fa:5bff:fe2c:1ba5  prefixlen 64  scopeid 0x20<link>
            ether 80:fa:5b:2c:1b:a5  txqueuelen 1000  (Ethernet)
            RX packets 14191  bytes 2521883 (2.5 MB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 20131  bytes 23185754 (23.1 MB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
            device interrupt 18   
    
    enp4s0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
            ether 80:fa:5b:2c:1b:a4  txqueuelen 1000  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 0  bytes 0 (0.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
            device interrupt 19   
    
    lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
            inet 127.0.0.1  netmask 255.0.0.0
            inet6 ::1  prefixlen 128  scopeid 0x10<host>
            loop  txqueuelen 1000  (Local Loopback)
            RX packets 713  bytes 286073 (286.0 KB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 713  bytes 286073 (286.0 KB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
    wlp5s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 192.168.1.20  netmask 255.255.255.0  broadcast 192.168.1.255
            inet6 fe80::2319:4938:994d:a346  prefixlen 64  scopeid 0x20<link>
            ether a4:34:d9:65:02:34  txqueuelen 1000  (Ethernet)
            RX packets 734  bytes 111677 (111.6 KB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 208  bytes 30961 (30.9 KB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    


    but then sudo dhclient eth0 returns 'Cannot find device "eth0"./

    I have deleted and added both connections using Network Manager, and when I checked
    /etc/NetworkManager/NetworkManager.conf
    it showed managed=false, which I have now changed, but it has not helped and Network Manager still tells me the devices are not managed.

    Code:
    [main]
    plugins=ifupdown,keyfile
    
    [ifupdown]
    managed=true
    
    


    I followed suggestions from this forum for device not managed threads, but they are all older, and may not related to 17.04, none of them helped in any case.

    My system is Xubuntu running XFCE. The devices both work when I reboot into Windows, so I am fairly sure it is not a hardware issue.

    Racconstrait

  2. #2
    Join Date
    May 2011
    Beans
    40

    Re: 17.04 updrade wired ethernet show 'device not managed'

    Working with System76 support, they noticed this bug and solution:

    https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1638842
    https://bugs.launchpad.net/ubuntu/+s...r/+bug/1658921

    The current fix is to run this command:

    Code:
    sudo touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf
    That worked. See message 6 and 7 in the thread for 1658921

    Raccoon
    Last edited by raccoonstrait; April 19th, 2017 at 12:22 AM.

  3. #3
    Join Date
    Oct 2005
    Location
    Warwick, RI
    Beans
    13
    Distro
    Kubuntu Breezy 5.10

    Re: 17.04 updrade wired ethernet show 'device not managed'

    The solution above did not work for me.

    However, the following did work for me:

    Code:
    sudo vi /etc/NetworkManager/NetworkManager.conf
    Here is what my default file looked like:
    Code:
    [main]
    plugins=ifupdown,keyfile,ofono
    dns=dnsmasq
    
    [ifupdown]
    managed=false
    Under
    Code:
    [ifupdown]
    , I changed
    Code:
    managed=false
    to
    Code:
    managed=true
    Then,
    Code:
    sudo service network-manager restart
    Enjoy!

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