Realtek r8168イーサネットカードを起動できません

私はArch Linuxで作業してきましたが、99％の時間はWLANを介してインターネットに接続されていますが、時々Ethernet接続を使用する必要があるので、今日何か奇妙なことを見ました。私のeth0デバイスがダウンして起動しません。頑張った

# ip link set eth0 up
# ifconfig eth0 up

ただし、ip link上記のいずれかのコマンドの後に、次が表示されます。

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT qlen 1000
    link/ether 8c:a9:82:01:13:6e brd ff:ff:ff:ff:ff:ff
5: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT qlen 1000
    link/ether 14:da:e9:0c:a9:d6 brd ff:ff:ff:ff:ff:ff

出力lspci -v：

08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
        Subsystem: ASUSTeK Computer Inc. U6V/U31J laptop
        Flags: bus master, fast devsel, latency 0, IRQ 48
        I/O ports at 8000 [size=256]
        Memory at d3804000 (64-bit, prefetchable) [size=4K]
        Memory at d3800000 (64-bit, prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: r8168

出力dmesg | grep r8168：

[    7.642820] r8168 Gigabit Ethernet driver 8.032.00-NAPI loaded
[    7.642964] r8168 0000:08:00.0: irq 48 for MSI/MSI-X
[    7.798226] r8168: This product is covered by one or more of the following patents: US5,307,459, US5,434,872, US5,732,094, US6,570,884, US6,115,776, and US6,327,625.
[    7.798232] r8168  Copyright (C) 2012  Realtek NIC software team <[email protected]> 
[   19.263312] r8168: eth0: link down
[  404.826781] r8168 Gigabit Ethernet driver 8.032.00-NAPI loaded
[  404.827275] r8168 0000:08:00.0: irq 48 for MSI/MSI-X
[  404.981486] r8168: This product is covered by one or more of the following patents: US5,307,459, US5,434,872, US5,732,094, US6,570,884, US6,115,776, and US6,327,625.
[  404.981491] r8168  Copyright (C) 2012  Realtek NIC software team <[email protected]> 
[  405.011797] r8168: eth0: link down

出力dmesg | grep eth0：

[    7.798230] eth0: Identified chip type is 'RTL8168E/8111E'.
[   19.263312] r8168: eth0: link down
[   19.263709] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[  404.981490] eth0: Identified chip type is 'RTL8168E/8111E'.
[  405.011797] r8168: eth0: link down
[  405.012293] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready