[ethernet]ubuntu更换网卡驱动

问题：

网络不能ping通，dmesg显示很多

[6127619.851454] r8169 ::00.0: eth0: link up
[6127758.849559] r8169 ::00.0: eth0: link up
[6133605.103557] r8169 ::00.0: eth0: link up
[6137391.798434] r8169 ::00.0: eth0: link up

重启后变好，等不久又不能ping通。

思路：

1.lspci 、lshw查看硬件型号，

:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111// PCI Express Gigabit Ethernet Controller (rev 0c)

2.查看驱动状态。

lsmod：
r8169
modinfo r8169

filename:       /lib/modules/3.2.--generic/kernel/drivers/net/ethernet/realtek/r8169.ko
firmware:       rtl_nic/rtl8168f-.fw
firmware:       rtl_nic/rtl8168f-.fw
firmware:       rtl_nic/rtl8105e-.fw
firmware:       rtl_nic/rtl8168e-.fw
firmware:       rtl_nic/rtl8168e-.fw
firmware:       rtl_nic/rtl8168e-.fw
firmware:       rtl_nic/rtl8168d-.fw
firmware:       rtl_nic/rtl8168d-.fw
version:        .3LK-NAPI
license:        GPL
description:    RealTek RTL- Gigabit Ethernet driver
author:         Realtek and the Linux r8169 crew <netdev@vger.kernel.org>
srcversion:     68C95644833EA999EB53AF1
alias:          pci:v00000001d00008168sv*sd00002410bc*sc*i*
alias:          pci:v00001737d00001032sv*sd00000024bc*sc*i*
alias:          pci:v000016ECd00000116sv*sd*bc*sc*i*
alias:          pci:v00001259d0000C107sv*sd*bc*sc*i*
alias:          pci:v00001186d00004302sv*sd*bc*sc*i*
alias:          pci:v00001186d00004300sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008169sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008168sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008167sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008136sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008129sv*sd*bc*sc*i*
depends:
intree:         Y
vermagic:       3.2.--generic SMP mod_unload modversions
parm:           use_dac:Enable PCI DAC. Unsafe on  bit PCI slot. (int)
parm:           debug:Debug verbosity level (=none, ..., =all) (int)

为什么硬件型号是r8168，而驱动型号是r8169呢，应该是这个问题。因为ubuntu驱动中没有r8168型号的驱动。要自己手动更换。

下载驱动：

驱动地址：http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=13&PFid=5&Level=5&Conn=4&DownTypeID=3&GetDown=false#2

参考文档：http://ubuntuforums.org/showthread.php?t=1992200

截取步骤：

) Download the driver and expand it into a new directory. cd to the top directory in the expanded directory.
) sudo make clean modules
) sudo make install
) Verify that new file r8168.ko exists in directory /lib/modules/3.2.--generic/kernel/drivers/net/ethernet/realtek/
) blacklist r8169
) Edit /etc/initramfs-tools/modules and add a line with "r8168" on it.
) sudo depmod -a
 ) sudo update-initramfs -v -u -k `uname -r`
) Reboot