Lambda Quad: No ethernet after force reboot

Technical Help
1

Lost internet connection on the the Lambda Quad after a force reboot. Ethernet cable functioning (tested and working in my tensorbook ):

Below are lspci, lshw, ethtool, journalctrl outputs.

BTW, Ethernet port on motherboard, no additional network cards.

Any suggestions?
Ravi

lspci -vmm | grep -B1 -A2 ‘^Class.*Ethernet’

returns nothing.

lshw -c network

returns
*-network:0
description: Ethernet interface
physical id: 2
logical name: enx00e04c0c0c72
serial: 00:e0:4c:0c:0c:72
size: 10Mbit/s
capacity: 1Gbit/s
capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8152 driverversion=v1.09.11 duplex=half link=no multicast=yes port=MII speed=10Mbit/s
*-network:1
description: Ethernet interface
physical id: 3
logical name: docker0
serial: 02:42:95:3f:e5:89
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.17.0.1 link=no multicast=yes

journalctl -u NetworkManager

returns (clipped)
Jul 10 19:56:47 ravi-dl1 NetworkManager[1085]: [1562813807.8780] Loaded device plugin: NMWifiFactory (/usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wifi.so)
Jul 10 19:56:47 ravi-dl1 NetworkManager[1085]: [1562813807.8788] device (lo): carrier: link connected
Jul 10 19:56:47 ravi-dl1 NetworkManager[1085]: [1562813807.8793] manager: (lo): new Generic device (/org/freedesktop/NetworkManager/Devices/1)
Jul 10 19:56:47 ravi-dl1 NetworkManager[1085]: [1562813807.8802] manager: (enp2s0f0): new Ethernet device (/org/freedesktop/NetworkManager/Devices/2)
Jul 10 19:56:47 ravi-dl1 NetworkManager[1085]: [1562813807.8812] keyfile: add connection in-memory (8ff0efa1-520e-321b-8946-20caf69ac447,“Wired connection 1”)
Jul 10 19:56:47 ravi-dl1 NetworkManager[1085]: [1562813807.8815] settings: (enp2s0f0): created default wired connection ‘Wired connection 1’
Jul 10 19:56:47 ravi-dl1 NetworkManager[1085]: [1562813807.8822] device (enp2s0f0): state change: unmanaged → unavailable (reason ‘managed’, sys-iface-state: ‘external’)
Jul 10 19:56:48 ravi-dl1 NetworkManager[1085]: [1562813808.1500] manager: (enp2s0f1): new Ethernet device (/org/freedesktop/NetworkManager/Devices/3)
Jul 10 19:56:48 ravi-dl1 NetworkManager[1085]: [1562813808.1508] keyfile: add connection in-memory (0b1f3d1a-4c69-3bfe-b7f5-d35f08236ddd,“Wired connection 2”)
Jul 10 19:56:48 ravi-dl1 NetworkManager[1085]: [1562813808.1511] settings: (enp2s0f1): created default wired connection ‘Wired connection 2’
Jul 10 19:56:48 ravi-dl1 NetworkManager[1085]: [1562813808.1516] device (enp2s0f1): state change: unmanaged → unavailable (reason ‘managed’, sys-iface-state: ‘external’)
Jul 10 19:56:48 ravi-dl1 NetworkManager[1085]: [1562813808.4235] modem-manager: ModemManager available
Jul 10 19:56:51 ravi-dl1 NetworkManager[1085]: [1562813811.9164] device changed (path: /sys/devices/pci0000:00/0000:00:01.1/0000:02:00.0/net/enp2s0f0, iface: enp2s0f0)
Jul 10 19:56:51 ravi-dl1 NetworkManager[1085]: [1562813811.9167] device changed (path: /sys/devices/pci0000:00/0000:00:01.1/0000:02:00.1/net/enp2s0f1, iface: enp2s0f1)
Jul 10 19:56:52 ravi-dl1 NetworkManager[1085]: [1562813812.0311] device changed (path: /sys/devices/virtual/net/lo, iface: lo)
Jul 10 19:56:54 ravi-dl1 NetworkManager[1085]: [1562813814.4196] manager: startup complete
Jul 10 19:58:24 ravi-dl1 NetworkManager[1085]: [1562813904.5681] device (enp2s0f1): carrier: link connected
Jul 10 19:58:24 ravi-dl1 NetworkManager[1085]: [1562813904.5685] device (enp2s0f1): state change: unavailable → disconnected (reason ‘carrier-changed’, sys-iface-state: ‘managed’)
Jul 10 19:58:24 ravi-dl1 NetworkManager[1085]: [1562813904.5698] policy: auto-activating connection ‘Wired connection 2’
Jul 10 19:58:24 ravi-dl1 NetworkManager[1085]: [1562813904.5711] device (enp2s0f1): Activation: starting connection ‘Wired connection 2’ (0b1f3d1a-4c69-3bfe-b7f5-d35f08236ddd)
Jul 10 19:58:24 ravi-dl1 NetworkManager[1085]: [1562813904.5713] device (enp2s0f1): state change: disconnected → prepare (reason ‘none’, sys-iface-state: ‘managed’)
Jul 10 19:58:24 ravi-dl1 NetworkManager[1085]: [1562813904.5714] manager: NetworkManager state is now CONNECTING
Jul 10 19:58:24 ravi-dl1 NetworkManager[1085]: [1562813904.5718] device (enp2s0f1): state change: prepare → config (reason ‘none’, sys-iface-state: ‘managed’)
Jul 10 19:58:24 ravi-dl1 NetworkManager[1085]: [1562813904.5726] device (enp2s0f1): state change: config → ip-config (reason ‘none’, sys-iface-state: ‘managed’)
Jul 10 19:58:24 ravi-dl1 NetworkManager[1085]: [1562813904.5735] dhcp4 (enp2s0f1): activation: beginning transaction (timeout in 45 seconds)
Jul 10 19:58:24 ravi-dl1 NetworkManager[1085]: [1562813904.5762] dhcp4 (enp2s0f1): dhclient started with pid 5970
Jul 10 19:58:24 ravi-dl1 dhclient[5970]: DHCPDISCOVER on enp2s0f1 to 255.255.255.255 port 67 interval 3 (xid=0xff2dd368)
Jul 10 19:58:27 ravi-dl1 dhclient[5970]: DHCPDISCOVER on enp2s0f1 to 255.255.255.255 port 67 interval 8 (xid=0xff2dd368)
Jul 10 19:58:31 ravi-dl1 dhclient[5970]: DHCPREQUEST of 10.10.10.133 on enp2s0f1 to 255.255.255.255 port 67 (xid=0x68d32dff)
Jul 10 19:58:31 ravi-dl1 dhclient[5970]: DHCPOFFER of 10.10.10.133 from 10.10.10.1
Jul 10 19:58:31 ravi-dl1 dhclient[5970]: DHCPACK of 10.10.10.133 from 10.10.10.1
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0365] dhcp4 (enp2s0f1): address 10.10.10.133
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0366] dhcp4 (enp2s0f1): plen 24 (255.255.255.0)
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0366] dhcp4 (enp2s0f1): gateway 10.10.10.1
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0366] dhcp4 (enp2s0f1): lease time 86400
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0367] dhcp4 (enp2s0f1): hostname ‘ravi-dl1’
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0367] dhcp4 (enp2s0f1): nameserver ‘10.10.10.1’
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0367] dhcp4 (enp2s0f1): domain name ‘dojo’
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0367] dhcp4 (enp2s0f1): state changed unknown → bound
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0389] device (enp2s0f1): state change: ip-config → ip-check (reason ‘none’, sys-iface-state: ‘managed’)
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0402] device (enp2s0f1): state change: ip-check → secondaries (reason ‘none’, sys-iface-state: ‘managed’)
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0406] device (enp2s0f1): state change: secondaries → activated (reason ‘none’, sys-iface-state: ‘managed’)
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0409] manager: NetworkManager state is now CONNECTED_LOCAL
Jul 10 19:58:31 ravi-dl1 dhclient[5970]: bound to 10.10.10.133 – renewal in 42659 seconds.
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0415] manager: NetworkManager state is now CONNECTED_SITE
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0417] policy: set ‘Wired connection 2’ (enp2s0f1) as default for IPv4 routing and DNS
Jul 10 19:58:31 ravi-dl1 NetworkManager[1085]: [1562813911.0422] device (enp2s0f1): Activation: successful, device activated.
Jul 10 20:01:43 ravi-dl1 NetworkManager[1085]: [1562814103.3501] manager: NetworkManager state is now CONNECTED_GLOBAL
Jul 10 20:12:59 ravi-dl1 NetworkManager[1085]: [1562814779.3992] modem-manager: ModemManager no longer available
Jul 10 20:12:59 ravi-dl1 NetworkManager[1085]: [1562814779.7740] error requesting auth for org.freedesktop.NetworkManager.wifi.share.protected: Authorization check failed: Refusing activation, D-Bus is shutting down.
Jul 10 20:12:59 ravi-dl1 NetworkManager[1085]: [1562814779.7741] error requesting auth for org.freedesktop.NetworkManager.wifi.share.open: Authorization check failed: Refusing activation, D-Bus is shutting down.
Jul 10 20:14:29 ravi-dl1 systemd[1]: Stopping Network Manager…
Jul 10 20:14:29 ravi-dl1 NetworkManager[1085]: [1562814869.5047] caught SIGTERM, shutting down normally.
Jul 10 20:14:29 ravi-dl1 NetworkManager[1085]: [1562814869.5080] exiting (success)
Jul 10 20:14:29 ravi-dl1 systemd[1]: Stopped Network Manager.

ethtool enx00e04c0c0c72

returns
Settings for enx00e04c0c0c72:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 32
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00007fff (32767)
drv probe link timer ifdown ifup rx_err tx_err tx_queued intr tx_done rx_status pktdata hw wol
Link detected: no

2

Just got off the phone with Gerome (Jerome?) @ Lambda Labs support.

He had me pop the cmos battery from the motherboard, powercycle for 30 secs and voila, the network cards are back to life!

Fantastic!

Thanks a bunch Gerome!

Here is the output showing the interfaces once again! enp2s0f0 / enp2s0f1

ifconfig

docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:74:3e:82:1e  txqueuelen 0  (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

enp2s0f0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether 0c:9d:92:1f:e2:d5  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

enp2s0f1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.0.196  netmask 255.255.255.0  broadcast 10.0.0.255
        inet6 2601:647:cb02:e520::b16b  prefixlen 128  scopeid 0x0<global>
        inet6 2601:647:cb02:e520:5ac:35e7:4a21:50e1  prefixlen 64  scopeid 0x0<global>
        inet6 2601:647:cb02:e520:4add:6496:a82d:7059  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::8f4d:de9a:46f9:cf88  prefixlen 64  scopeid 0x20<link>
        ether 0c:9d:92:1f:e2:d6  txqueuelen 1000  (Ethernet)
        RX packets 19088  bytes 19975514 (19.9 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 12707  bytes 2505512 (2.5 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enx00e04c0c0c72: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether 00:e0:4c:0c:0c:72  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

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 1230  bytes 225942 (225.9 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1230  bytes 225942 (225.9 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0