Error reading PHY register

Ifconfig显示网卡总是报错，IP配置无效，重启也无效，日志错误有如下内容：

May  7 17:16:05 localhost kernel: e1000e 0000:02:00.0: eth1: Reset adapter

May  7 17:16:05 localhost kernel: e1000e 0000:02:00.0: eth1: Error reading PHY register

ethtool查看显示也不正常

ethtool eth0

Settings for eth0:

        Supported ports: [ TP ]

        Supported link modes:   10baseT/Half 10baseT/Full 

                                100baseT/Half 100baseT/Full 

                                1000baseT/Full 

        Supported pause frame use: No

        Supports auto-negotiation: Yes

        Advertised link modes:  10baseT/Half 10baseT/Full 

                                100baseT/Half 100baseT/Full 

                                1000baseT/Full 

        Advertised pause frame use: No

        Advertised auto-negotiation: Yes

        Speed: Unknown!

        Duplex: Unknown!

解决办法，升级网卡驱动，下载相应的驱动包，首先查看网卡的型号：

lspci -v | grep Ethernet -A 1

02:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection

Subsystem: Intel Corporation Device 0000

--

03:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection

Subsystem: Intel Corporation Device 0000
在查看驱动类型： ethtool -i eth0 
driver: e1000e

version: 1.4.4-k

firmware-version: 2.3-13

bus-info: 0000:02:00.0
驱动为e1000e，然后下载相应的驱动，此例中选择最新的2.0驱动，地址为：
wget  stable/2.0.0/e1000e-2.0.0.tar.gz
tar zxf e1000e-2.0.0.tar.gz && cd e1000e-2.0.0/src && make install
rmmod e1000e;modprobe e1000e （远程连接，必须两个命令一起使用，否则网卡就断了）
然后重启。


转自：http://blog.sina.com.cn/s/blog_48e344da01014zpt.html