我有 AsRock X399 Taichi 主板，带有两个以太网卡和一个 Wi-Fi。我使用 Ubuntu Mate 18.04 的默认网络小程序断开以太网连接（仅具有 Wi-Fi 连接），这导致网卡无人认领。
我尝试删除所有 udev 规则/etc/udev/rules.d并重新加载该卡的内核模块，但没有成功。我也无法使用上述小程序手动添加它（它没有显示该卡），我也不能 ifconfig up。
两个 NIC 在 LiveCD 上均可正常工作。
lshw -c network：
*-network UNCLAIMED
description: Ethernet controller
product: I211 Gigabit Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:04:00.0
version: 03
width: 32 bits
clock: 33MHz
capabilities: pm msi msix pciexpress cap_list
configuration: latency=0
resources: memory:efa00000-efa1ffff ioport:6000(size=32) memory:efa20000-efa23fff
*-network
description: Wireless interface
product: Intel Corporation
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:05:00.0
logical name: wlp5s0
version: 10
serial: 28:c6:3f:15:46:2c
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-45-generic firmware=29.1044073957.0 ip=192.168.100.132 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:104 memory:ef900000-ef901fff
*-network
description: Ethernet interface
product: I211 Gigabit Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:06:00.0
logical name: enp6s0
version: 03
serial: 70:85:c2:64:1f:1c
size: 1Gbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi msix pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=igb driverversion=5.4.0-k duplex=full firmware=0. 4-1 ip=192.168.8.104 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:33 memory:ef800000-ef81ffff ioport:5000(size=32) memory:ef820000-ef823fff
lspci -knn | grep Net -A3; rfkill list：
04:00.0 Ethernet controller [0200]: Intel Corporation I211 Gigabit Network Connection [8086:1539] (rev 03)
Subsystem: ASRock Incorporation I211 Gigabit Network Connection [1849:1539]
Kernel modules: igb
05:00.0 Network controller [0280]: Intel Corporation Device [8086:24fb] (rev 10)
Subsystem: Intel Corporation Device [8086:2110]
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
06:00.0 Ethernet controller [0200]: Intel Corporation I211 Gigabit Network Connection [8086:1539] (rev 03)
Subsystem: ASRock Incorporation I211 Gigabit Network Connection [1849:1539]
Kernel driver in use: igb
Kernel modules: igb
08:00.0 PCI bridge [0604]: PLX Technology, Inc. PEX8112 x1 Lane PCI Express-to-PCI Bridge [10b5:8112] (rev aa)