Ethernet connection stopped working

Questions about cabled networking
Forum rules
Before you post please read how to get help
Post Reply
tony_a
Level 1
Level 1
Posts: 6
Joined: Wed Jul 11, 2018 4:07 am

Ethernet connection stopped working

Post by tony_a » Thu Jul 12, 2018 4:16 am

Hi,

I ran an update with update manager yesterday and when it finished my wired network connection would no longer connect to my network. The network still seems to be up and running fine (everything else on it is working okay).

Here's my system info and the results of a few commands I've tried:

Active Kernel: 4.4.0-127

Code: Select all

inxi -Fxz
System:    Host: tonys-computer Kernel: 4.4.0-127-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.6.7 (Gtk 3.18.9) Distro: Linux Mint 18.3 Sylvia
Machine:   Mobo: ASUSTeK model: Z10PE-D8 WS v: Rev 1.xx Bios: American Megatrends v: 3204 date: 12/18/2015
CPU(s):    2 Octa core Intel Xeon E5-2630 v3s (-HT-MCP-SMP-) cache: 40960 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 76631
           clock speeds: max: 3200 MHz 1: 1375 MHz 2: 1205 MHz 3: 1200 MHz 4: 1236 MHz 5: 1200 MHz 6: 1203 MHz
           7: 1285 MHz 8: 1286 MHz 9: 1278 MHz 10: 1292 MHz 11: 1388 MHz 12: 1200 MHz 13: 1200 MHz 14: 1331 MHz
           15: 1257 MHz 16: 1200 MHz 17: 1388 MHz 18: 1200 MHz 19: 1259 MHz 20: 1401 MHz 21: 1595 MHz
           22: 1200 MHz 23: 1260 MHz 24: 1233 MHz 25: 1200 MHz 26: 1200 MHz 27: 1200 MHz 28: 1200 MHz
           29: 1234 MHz 30: 1200 MHz 31: 1201 MHz 32: 1205 MHz
Graphics:  Card: NVIDIA GM204 [GeForce GTX 970] bus-ID: 03:00.0
           Display Server: X.Org 1.18.4 drivers: nvidia (unloaded: fbdev,vesa,nouveau)
           Resolution: 1280x1024@60.02hz, 1280x1024@60.02hz
           GLX Renderer: GeForce GTX 970/PCIe/SSE2 GLX Version: 4.5.0 NVIDIA 384.130 Direct Rendering: Yes
Audio:     Card-1 NVIDIA GM204 High Definition Audio Controller driver: snd_hda_intel bus-ID: 03:00.1
           Card-2 Intel C610/X99 series HD Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0
           Sound: Advanced Linux Sound Architecture v: k4.4.0-127-generic
Network:   Card-1: Intel I210 Gigabit Network Connection driver: igb v: 5.3.0-k port: 4000 bus-ID: 06:00.0
           IF: enp6s0 state: down mac: <filter>
           Card-2: Intel I210 Gigabit Network Connection driver: igb v: 5.3.0-k port: 3000 bus-ID: 07:00.0
           IF: enp7s0 state: up speed: 100 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 12002.4GB (3.6% used) ID-1: /dev/nvme0n1 model: N/A size: 256.1GB
           ID-2: /dev/sda model: WDC_WD4000F9YZ size: 4000.8GB temp: 34C
           ID-3: /dev/sdb model: WDC_WD4000F9YZ size: 4000.8GB temp: 34C
           ID-4: /dev/sdc model: WDC_WD4000F9YZ size: 4000.8GB temp: 34C
Partition: ID-1: / size: 109G used: 19G (19%) fs: ext4 dev: /dev/dm-0
           ID-2: /boot size: 472M used: 279M (63%) fs: ext2 dev: /dev/nvme0n1p1
           ID-3: swap-1 size: 137.32GB used: 0.00GB (0%) fs: swap dev: /dev/dm-1
RAID:      Device-1: /dev/md0 - active components: online: sdc1[3] sdb1[1] sda1[0]
           Info: raid: 5 report: 3/3 blocks: 7813771264 chunk size: 64k bitmap: true
Sensors:   System Temperatures: cpu: 45.0C mobo: N/A gpu: 0.0:43C
           Fan Speeds (in rpm): cpu: 0
Info:      Processes: 444 Uptime: 17 min Memory: 1186.3/128824.6MB Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.481) inxi: 2.2.35

Code: Select all

ifconfig
enp6s0    Link encap:Ethernet  HWaddr 9c:5c:8e:4f:f2:a1  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Memory:c7300000-c737ffff 

enp7s0    Link encap:Ethernet  HWaddr 9c:5c:8e:4f:f2:a2  
          inet6 addr: fe80::30e:4d41:f752:8b1a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:211 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:38385 (38.3 KB)
          Memory:c7200000-c727ffff 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:810 errors:0 dropped:0 overruns:0 frame:0
          TX packets:810 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:62244 (62.2 KB)  TX bytes:62244 (62.2 KB)

Code: Select all

ping 192.168.1.1
connect: Network is unreachable

Code: Select all

dmesg | tail
[   42.149130] NET: Registered protocol family 24
[   42.153971] Initializing XFRM netlink socket
[   42.155166] l2tp_core: L2TP core driver, V2.0
[   42.156340] l2tp_netlink: L2TP netlink interface
[   42.157621] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[   42.171017] NET: Registered protocol family 38
[   42.824452] nvidia-modeset: Allocated GPU:0 (GPU-348a5d55-12f9-8428-8df3-a5e0fc6bd4f3) @ PCI:0000:03:00.0
[   43.771865] mdmwebkit[2356]: segfault at 8 ip 00007f9e604aaacd sp 00007ffe272aea50 error 4 in libGL.so.384.130[7f9e603f9000+cb000]
[   44.391160] nvidia-modeset: Freed GPU:0 (GPU-348a5d55-12f9-8428-8df3-a5e0fc6bd4f3) @ PCI:0000:03:00.0
[   46.069925] nvidia-modeset: Allocated GPU:0 (GPU-348a5d55-12f9-8428-8df3-a5e0fc6bd4f3) @ PCI:0000:03:00.0

Code: Select all

dmesg | grep -i error
[    1.387255] ERST: Error Record Serialization Table (ERST) support is initialized.
[   10.907128] EXT4-fs (dm-0): re-mounted. Opts: errors=remount-ro
[   43.771865] mdmwebkit[2356]: segfault at 8 ip 00007f9e604aaacd sp 00007ffe272aea50 error 4 in libGL.so.384.130[7f9e603f9000+cb000]

Code: Select all

route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

Code: Select all

nmcli networking connectivity check
none

Code: Select all

nmcli general permission
PERMISSION                                                 VALUE   
org.freedesktop.NetworkManager.enable-disable-network      yes     
org.freedesktop.NetworkManager.enable-disable-wifi         yes     
org.freedesktop.NetworkManager.enable-disable-wwan         yes     
org.freedesktop.NetworkManager.enable-disable-wimax        yes     
org.freedesktop.NetworkManager.sleep-wake                  no      
org.freedesktop.NetworkManager.network-control             yes     
org.freedesktop.NetworkManager.wifi.share.protected        yes     
org.freedesktop.NetworkManager.wifi.share.open             yes     
org.freedesktop.NetworkManager.settings.modify.system      yes     
org.freedesktop.NetworkManager.settings.modify.own         yes     
org.freedesktop.NetworkManager.settings.modify.hostname    auth    
org.freedesktop.NetworkManager.settings.modify.global-dns  unknown 
org.freedesktop.NetworkManager.reload                      auth 

tony_a
Level 1
Level 1
Posts: 6
Joined: Wed Jul 11, 2018 4:07 am

Re: Ethernet connection stopped working

Post by tony_a » Fri Jul 13, 2018 2:39 am

Randomly my network connection just magically worked this morning. I have no idea why though. I'll keep an eye on it over the next few days and if it stays solid I'll mark this thread as solved.

Post Reply

Return to “Ethernet”