Diagnóstico de la conexión Ethernet de Ubuntu

Diagnóstico de la conexión Ethernet de Ubuntu

Estoy ejecutando Ubuntu 18.04.4 LTS, con Cinnamon como entorno de escritorio.

Ayer se me desconectó la conexión Ethernet y ahora ya no puedo usar Internet; en Chromium el error es DNS_PROBE_FINISHED_NO_INTERNET. Sin embargo, en mi Administrador de red, todavía estoy conectado a la "Conexión por cable 1".

¿Qué pasos debo seguir para diagnosticar dónde está el problema? ¿Necesito proporcionar más información? No estoy familiarizado con las redes. Actualmente estoy usando un módem móvil como reemplazo.

¡Gracias!

Salida de varios comandos que pueden ser útiles:

ifconfig - enp10s0 es el ethernet que está teniendo problemas.

enp10s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.7  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fd80::d95c:db70:d668:7afc  prefixlen 64  scopeid 0x0<global>
        inet6 fd80::2de8:4bea:acf9:bc9a  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::2618:40ca:20d3:6055  prefixlen 64  scopeid 0x20<link>
        ether 70:85:c2:55:07:64  txqueuelen 1000  (Ethernet)
        RX packets 2134  bytes 163311 (163.3 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1895  bytes 168216 (168.2 KB)
        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 2864  bytes 234021 (234.0 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2864  bytes 234021 (234.0 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

ruta


Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         _gateway        0.0.0.0         UG    20100  0        0 enp10s0
link-local      0.0.0.0         255.255.0.0     U     1000   0        0 enp10s0
192.168.1.0     0.0.0.0         255.255.255.0   U     100    0        0 enp10s0

hacer ping-c4 8.8.8.8

PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
From 192.168.1.1 icmp_seq=1 Destination Net Unreachable
From 192.168.1.1 icmp_seq=2 Destination Net Unreachable
From 192.168.1.1 icmp_seq=3 Destination Net Unreachable
From 192.168.1.1 icmp_seq=4 Destination Net Unreachable

--- 8.8.8.8 ping statistics ---
4 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3035ms

sudo ethtool enp10s0

Settings for enp10s0:
    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
    Link partner advertised link modes:  10baseT/Half 10baseT/Full 
                                         100baseT/Half 100baseT/Full 
                                         1000baseT/Full 
    Link partner advertised pause frame use: Symmetric
    Link partner advertised auto-negotiation: Yes
    Link partner advertised FEC modes: Not reported
    Speed: 1000Mb/s
    Duplex: Full
    Port: MII
    PHYAD: 0
    Transceiver: internal
    Auto-negotiation: on
    Supports Wake-on: pumbg
    Wake-on: g
    Current message level: 0x00000033 (51)
                   drv probe ifdown ifup
    Link detected: yes

ruta IP

default via 192.168.1.1 dev enp10s0 proto dhcp metric 20100 
169.254.0.0/16 dev enp10s0 scope link metric 1000 
192.168.1.0/24 dev enp10s0 proto kernel scope link src 192.168.1.7 metric 100 

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