Ethernet-соединение не работает - активация сети не удалась

Значит, я знаю, что есть похожие проблемы, но пока не могу решить свою ни одним из решений:

Я пытаюсь подключиться к сети LAN с моего Thinkpad P14 (Intel ) работает с Ubuntu 20.04 Desktop.Я продолжаю получать: « Ошибка активации сетевого подключения », и у меня заканчиваются возможные решения. У меня нет доступа к маршрутизатору, и точно такое же кабельное соединение работает, например, для ноутбука с Windows, поэтому я не думаю, что это может быть кабель или соединение.

Я пробовал:

1. полную переустановку Ubuntu
2. шаги, описанные в этом сообщении
3. переустановку диспетчера сети
4. перезапуск диспетчера сети
5. различные кабели локальной сети
6. установку HWE: ]sudo apt install linux-generic-hwe-20.04

Согласно выводу журнала (sudo journalctl -b 0 -u NetworkManager) запрос dhcp истекает по тайм-ауту: выход

Вот вывод lshw -C network

*-network:0               
       description: Wireless interface
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       logical name: wlp0s20f3
       version: 20
       serial: a0:e7:0b:d2:f7:21
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.11.0-40-generic firmware=59.601f3a66.0 QuZ-a0-hr-b0-59.u ip=10.181.78.114 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: iomemory:600-5ff irq:16 memory:6053bc4000-6053bc7fff
  *-network:1
       description: Ethernet interface
       product: Ethernet Connection (13) I219-V
       vendor: Intel Corporation
       physical id: 1f.6
       bus info: pci@0000:00:1f.6
       logical name: enp0s31f6
       version: 20
       serial: 90:2e:16:93:b9:4d
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.11.0-40-generic duplex=full firmware=0.8-3 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:149 memory:bec80000-bec9ffff
  *-network
       description: Ethernet interface
       physical id: 2
       bus info: usb@2:3.3
       logical name: enx34298f70f2f4
       serial: 34:29:8f:70:f2:f4
       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=v1.11.11 duplex=half firmware=rtl8153a-4 v2 02/07/20 link=no multicast=yes port=MII speed=10Mbit/s

вывод nmcli connection:

NAME                     UUID                                  TYPE      DEVICE    
netplan-enp0s31f6        d4735e4b-9bfa-3052-b1c4-ef3302803c9a  ethernet  enp0s31f6 

Настройка другого клиента dhcp (как предложено в этом сообщении ) Я могу, по крайней мере, изменить логи:

nov 25 14:40:09 l dhclient[10449]: DHCPDISCOVER on enp0s31f6 to 255.255.255.255 port 67 interval 10 (xid=0x4c152271)
nov 25 14:40:10 l NetworkManager[9427]: <info>  [1637847610.7508] device (enp0s31f6): state change: ip-config -> deactivating (reason 'user-requested', sys-iface-state: 'managed')
nov 25 14:40:10 l NetworkManager[9427]: <info>  [1637847610.7514] manager: NetworkManager state is now DISCONNECTING
nov 25 14:40:10 l NetworkManager[9427]: <info>  [1637847610.7527] audit: op="device-disconnect" interface="enp0s31f6" ifindex=2 pid=9100 uid=1000 result="success"
nov 25 14:40:10 l NetworkManager[9427]: <info>  [1637847610.7622] device (enp0s31f6): state change: deactivating -> disconnected (reason 'user-requested', sys-iface-state: 'managed')
nov 25 14:40:10 l NetworkManager[9427]: <info>  [1637847610.7658] dhcp4 (enp0s31f6): canceled DHCP transaction, DHCP client pid 10449
nov 25 14:40:10 l NetworkManager[9427]: <info>  [1637847610.7658] dhcp4 (enp0s31f6): state changed unknown -> done
nov 25 14:40:11 l NetworkManager[9427]: <info>  [1637847611.0623] manager: NetworkManager state is now DISCONNECTED
nov 25 14:40:11 l NetworkManager[9427]: <info>  [1637847611.5681] device (enp0s31f6): Activation: starting connection 'netplan-enp0s31f6' (d4735e4b-9bfa-3052-b1c4-ef3302803c9a)
nov 25 14:40:11 l NetworkManager[9427]: <info>  [1637847611.5682] audit: op="connection-activate" uuid="d4735e4b-9bfa-3052-b1c4-ef3302803c9a" name="netplan-enp0s31f6" pid=9100 uid=1000 result="success"
nov 25 14:40:11 l NetworkManager[9427]: <info>  [1637847611.5685] device (enp0s31f6): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
nov 25 14:40:11 l NetworkManager[9427]: <info>  [1637847611.5694] manager: NetworkManager state is now CONNECTING
nov 25 14:40:11 l NetworkManager[9427]: <info>  [1637847611.5699] device (enp0s31f6): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
nov 25 14:40:11 l NetworkManager[9427]: <info>  [1637847611.5712] device (enp0s31f6): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
nov 25 14:40:11 l NetworkManager[9427]: <info>  [1637847611.5719] dhcp4 (enp0s31f6): activation: beginning transaction (timeout in 45 seconds)
nov 25 14:40:11 l NetworkManager[9427]: <info>  [1637847611.5755] dhcp4 (enp0s31f6): dhclient started with pid 10539
nov 25 14:40:11 l dhclient[10539]: DHCPDISCOVER on enp0s31f6 to 255.255.255.255 port 67 interval 3 (xid=0x7d307302)
nov 25 14:40:11 l dhclient[10539]: Can't create /run/NetworkManager/dhclient-enp0s31f6.pid: Permission denied
nov 25 14:40:14 l dhclient[10539]: DHCPDISCOVER on enp0s31f6 to 255.255.255.255 port 67 interval 8 (xid=0x7d307302)

Заранее большое спасибо.

Редактировать 1 По запросу @heynnema вывод cat /etc/network/interfaces

# interfaces(5) file used by ifup(8) and ifdown(8)
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

Вывод cat /etc/netplan/*.yaml:

network:
  ethernets:
    enp0s31f6:
      dhcp4: true
  version: 2
# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager
network:
  version: 2
  renderer: NetworkManager

Edit 2 Выполнив шаги @heynnema ниже, я все еще получаю ту же ошибку, вот вывод journalctl -b 0 -u NetworkManager:

nov 29 08:53:12 l NetworkManager[1034]: <info>  [1638172392.1044] device (enp0s31f6): Activation: starting connection 'Wired connection 1' (5f5a5254-5476-3279-9b2a-cfc3981d7e66)
nov 29 08:53:12 l NetworkManager[1034]: <info>  [1638172392.1046] audit: op="connection-activate" uuid="5f5a5254-5476-3279-9b2a-cfc3981d7e66" name="Wired connection 1" pid=3796 uid=1000 result="succe>
nov 29 08:53:12 l NetworkManager[1034]: <info>  [1638172392.1047] device (enp0s31f6): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
nov 29 08:53:12 l NetworkManager[1034]: <info>  [1638172392.1054] manager: NetworkManager state is now CONNECTING
nov 29 08:53:12 l NetworkManager[1034]: <info>  [1638172392.1058] device (enp0s31f6): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
nov 29 08:53:12 l NetworkManager[1034]: <info>  [1638172392.1069] device (enp0s31f6): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
nov 29 08:53:12 l NetworkManager[1034]: <info>  [1638172392.1075] dhcp4 (enp0s31f6): activation: beginning transaction (timeout in 45 seconds)
nov 29 08:53:12 l NetworkManager[1034]: <info>  [1638172392.1114] dhcp4 (enp0s31f6): dhclient started with pid 3874
nov 29 08:53:12 l dhclient[3874]: DHCPDISCOVER on enp0s31f6 to 255.255.255.255 port 67 interval 3 (xid=0xbf0c12b)
nov 29 08:53:12 l dhclient[3874]: Can't create /run/NetworkManager/dhclient-enp0s31f6.pid: Permission denied
nov 29 08:53:15 l dhclient[3874]: DHCPDISCOVER on enp0s31f6 to 255.255.255.255 port 67 interval 8 (xid=0xbf0c12b)
nov 29 08:53:23 l dhclient[3874]: DHCPDISCOVER on enp0s31f6 to 255.255.255.255 port 67 interval 11 (xid=0xbf0c12b)
nov 29 08:53:34 l dhclient[3874]: DHCPDISCOVER on enp0s31f6 to 255.255.255.255 port 67 interval 21 (xid=0xbf0c12b)
nov 29 08:53:55 l dhclient[3874]: DHCPDISCOVER on enp0s31f6 to 255.255.255.255 port 67 interval 12 (xid=0xbf0c12b)
nov 29 08:53:57 l NetworkManager[1034]: <warn>  [1638172437.5143] dhcp4 (enp0s31f6): request timed out
nov 29 08:53:57 l NetworkManager[1034]: <info>  [1638172437.5144] dhcp4 (enp0s31f6): state changed unknown -> timeout
nov 29 08:53:57 l NetworkManager[1034]: <info>  [1638172437.5144] device (enp0s31f6): state change: ip-config -> failed (reason 'ip-config-unavailable', sys-iface-state: 'managed')
nov 29 08:53:57 l NetworkManager[1034]: <info>  [1638172437.5154] manager: NetworkManager state is now DISCONNECTED
nov 29 08:53:57 l NetworkManager[1034]: <warn>  [1638172437.5171] device (enp0s31f6): Activation: failed for connection 'Wired connection 1'
nov 29 08:53:57 l NetworkManager[1034]: <info>  [1638172437.5177] device (enp0s31f6): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
nov 29 08:53:57 l NetworkManager[1034]: <info>  [1638172437.5584] dhcp4 (enp0s31f6): canceled DHCP transaction, DHCP client pid 3874
nov 29 08:53:57 l NetworkManager[1034]: <info>  [1638172437.5585] dhcp4 (enp0s31f6): state changed timeout -> done

Согласно этому сообщению на форуме (который однако для Ubuntu Sever) может быть проблема с файлами .leases, однако в моем файле /etc/passwd нет пользователя dhcp. Вот содержимое моего каталога /var/lib/dhcp:

drwxr-xr-x  2 root root 4096 nov  9 13:11 .
drwxr-xr-x 70 root root 4096 nov 22 15:02 ..
-rw-r--r--  1 root root    0 nov 25 14:23 dhclient.leases

Редактировать 3

По запросу @heynnema: Вывод ls -la /etc/network/interfaces.d

total 8
drwxr-xr-x 2 root root 4096 mag  3  2019 .
drwxr-xr-x 7 root root 4096 nov 25 14:26 .

Вывод ls -la /run/NetworkManager/:

total 8
drwxr-xr-x  5 root root  160 nov 29 12:16 .
drwxr-xr-x 38 root root 1060 nov 29 12:15 ..
drwxr-xr-x  2 root root   60 nov 29 12:14 conf.d
drwxr-xr-x  2 root root   80 nov 29 12:23 devices
-rw-r--r--  1 root root  274 nov 29 12:16 no-stub-resolv.conf
srwxr-xr-x  1 root root    0 nov 29 12:14 private-dhcp
-rw-r--r--  1 root root   74 nov 29 12:16 resolv.conf

Вывод grep -i -v "#" /etc/dhcp/dhclient.conf:

option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;

send host-name = gethostname();
request subnet-mask, broadcast-address, time-offset, routers,
    domain-name, domain-name-servers, domain-search, host-name,
    dhcp6.name-servers, dhcp6.domain-search, dhcp6.fqdn, dhcp6.sntp-servers,
    netbios-name-servers, netbios-scope, interface-mtu,
    rfc3442-classless-static-routes, ntp-servers;

timeout 300;