我在 asrock Z370M Pro 4（Giga PHY Intel® I219V）上运行 Ubuntu 16.04。
我的有线连接总是会随机中断。它可以工作 20/30 秒，最多一分钟，然后会断开 20-30 秒，最多 2 分钟。
以下是一些终端输出：
dmesg | grep e100
[ 0.924486] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[ 0.924486] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[ 0.993761] e1000e 0000:00:1f.6: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[ 1.196239] e1000e 0000:00:1f.6 0000:00:1f.6 (uninitialized): registered PHC clock
[ 1.263770] e1000e 0000:00:1f.6 eth0: (PCI Express:2.5GT/s:Width x1) 70:85:c2:82:8d:3e
[ 1.263771] e1000e 0000:00:1f.6 eth0: Intel(R) PRO/1000 Network Connection
[ 1.263879] e1000e 0000:00:1f.6 eth0: MAC: 12, PHY: 12, PBA No: FFFFFF-0FF
[ 1.264564] e1000e 0000:00:1f.6 eno1: renamed from eth0
[ 6.082388] e1000e: eno1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
sudo lshw -C network
*-network
description: Ethernet interface
product: Ethernet Connection (2) I219-V
vendor: Intel Corporation
physical id: 1f.6
bus info: pci@0000:00:1f.6
logical name: eno1
version: 00
serial: 70:85:c2:82:8d:3e
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=3.2.6-k duplex=full firmware=0.2-4 ip=192.168.0.71 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:125 memory:df200000-df21ffff
ip -c a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 70:85:c2:82:8d:3e brd ff:ff:ff:ff:ff:ff
inet 192.168.0.71/24 brd 192.168.0.255 scope global dynamic eno1
valid_lft 8635954sec preferred_lft 8635954sec
inet6 fe80::231:1684:a81b:642e/64 scope link
valid_lft forever preferred_lft forever
lspci -nnk | grep 0200 -A2
00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (2) I219-V [8086:15b8]
DeviceName: Onboard - Ethernet
Subsystem: ASRock Incorporation Ethernet Connection (2) I219-V [1849:15b8]
systemctl status NetworkManager.service --no-pager -l
● NetworkManager.service - Network Manager
Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)
Active: active (running) since Čet 2019-05-23 07:39:33 CEST; 1h 10min ago
Docs: man:NetworkManager(8)
Main PID: 852 (NetworkManager)
CGroup: /system.slice/NetworkManager.service
├─ 852 /usr/sbin/NetworkManager --no-daemon
├─1252 /sbin/dhclient -d -q -sf /usr/lib/NetworkManager/nm-dhcp-helper -pf /var/run/dhclient-eno1.pid -lf /var/lib/NetworkManager/dhclient-5357f85c-b235-3538-afb1-dc96f8d64329-eno1.lease -cf /var/lib/NetworkManager/dhclient-eno1.conf eno1
└─1262 /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces --pid-file=/var/run/NetworkManager/dnsmasq.pid --listen-address=127.0.1.1 --cache-size=0 --conf-file=/dev/null --proxy-dnssec --enable-dbus=org.freedesktop.NetworkManager.dnsmasq --conf-dir=/etc/NetworkManager/dnsmasq.d
Svi 23 07:39:36 user-desktop dnsmasq[1262]: DBus support enabled: connected to system bus
Svi 23 07:39:36 user-desktop dnsmasq[1262]: warning: no upstream servers configured
Svi 23 07:39:36 user-desktop NetworkManager[852]: <info> [1558589976.8843] device (eno1): Activation: successful, device activated.
Svi 23 07:39:36 user-desktop NetworkManager[852]: <info> [1558589976.8854] dnsmasq[0x202ace0]: dnsmasq appeared as :1.42
Svi 23 07:39:36 user-desktop dnsmasq[1262]: setting upstream servers from DBus
Svi 23 07:39:36 user-desktop dnsmasq[1262]: using nameserver 192.168.0.150#53(via eno1)
Svi 23 07:39:36 user-desktop dnsmasq[1262]: using nameserver 193.198.184.130#53(via eno1)
Svi 23 07:39:41 user-desktop NetworkManager[852]: <info> [1558589981.7043] manager: startup complete
Svi 23 07:39:43 user-desktop NetworkManager[852]: <info> [1558589983.7035] manager: WiFi hardware radio set enabled
Svi 23 07:39:43 user-desktop NetworkManager[852]: <info> [1558589983.7035] manager: WWAN hardware radio set enabled
--- 8.8.8.8 ping statistics ---
701 packets transmitted, 359 received, 48% packet loss, time 708752ms
rtt min/avg/max/mdev = 49.605/49.798/57.470/0.700 ms
连接到同一交换机的其他电脑（Windows 系统）工作正常。
任何帮助深表感谢！
我是 Linux 的绝对初学者，因此在尝试提供帮助时请记住这一点。
谢谢！