由于工作关系，需要安装ubuntu11.04，可是网络一直不稳定，经常掉线(同事的网络灰常)，ARM板和PC的tftp服务灰常不稳定，时而可以，时而不行，灰常郁闷，在网上终于找到一篇文章，跟我碰到问题一样，于是一步一步照着做，现在网络灰常稳定，再次感谢他们。

first:make user to root.

$su -root

1) Check to see if the r8169 module is loaded

-> lsmod | grep r816

r8168 41104 0

-> lspci -v

01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)

Subsystem: ASRock Incorporation Device 8168

Kernel driver in use: r8169

Kernel modules: r8169

2) Download the official Realtek driver

Realtek RTL8111/RTL8168

3) Remove the r8169 module

-> rmmod r8169

-> mv /lib/modules/`uname -r`/kernel/drivers/net/r8169.ko ~/r8169.ko.backup

( the ` is a backtick, it is not an apostrophe or single quote )

4) Build the new r8168 module for the kernel

-> bzip2 -d r8168-8.009.00.tar.bz2 (这儿的包名称有点儿变化,需要改动)

-> tar -xf r8168-8.009.00.tar

-> cd r8168-8.009.00

-> make clean modules

-> make install

5) Rebuild the kernel module dependencies

-> depmod -a

-> insmod ./src/r8168.ko

6) Remove the r8169 module from initrd

-> mv /initrd.img ~/initrd.img.backup

-> mkinitramfs -o /boot/initrd.img-`uname -r` `uname -r`

7) Add r8168 module to /etc/modules

-> echo "r8168" >> /etc/modules

Reboot, You are done!

9) Examine that ONLY the r8168 module is loaded for the interface

-> lspci -v

01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)

Subsystem: ASRock Incorporation Device 8168

Kernel driver in use: r8168

Kernel modules: r8168

链接：http://forum.ubuntu.org.cn/viewtopic.php?f=77&t=187659

由于工作关系，需要安装ubuntu11.04，可是网络一直不稳定，经常掉线(同事的网络灰常)，ARM板和PC的tftp服务灰常不稳定，时而可以，时而不行，灰常郁闷，在网上终于找到一篇文章，跟我碰到问题一样，于是一步一步照着做，现在网络灰常稳定，再次感谢他们。

first:make user to root.

$su -root

1) Check to see if the r8169 module is loaded

-> lsmod | grep r816

r8168 41104 0

-> lspci -v

01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)

Subsystem: ASRock Incorporation Device 8168

Kernel driver in use: r8169

Kernel modules: r8169

2) Download the official Realtek driver

Realtek RTL8111/RTL8168

3) Remove the r8169 module

-> rmmod r8169

-> mv /lib/modules/`uname -r`/kernel/drivers/net/r8169.ko ~/r8169.ko.backup

( the ` is a backtick, it is not an apostrophe or single quote )

4) Build the new r8168 module for the kernel

-> bzip2 -d r8168-8.009.00.tar.bz2 (这儿的包名称有点儿变化,需要改动)

-> tar -xf r8168-8.009.00.tar

-> cd r8168-8.009.00

-> make clean modules

-> make install

5) Rebuild the kernel module dependencies

-> depmod -a

-> insmod ./src/r8168.ko

6) Remove the r8169 module from initrd

-> mv /initrd.img ~/initrd.img.backup

-> mkinitramfs -o /boot/initrd.img-`uname -r` `uname -r`

7) Add r8168 module to /etc/modules

-> echo "r8168" >> /etc/modules

Reboot, You are done!

9) Examine that ONLY the r8168 module is loaded for the interface

-> lspci -v

01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)

Subsystem: ASRock Incorporation Device 8168

Kernel driver in use: r8168

Kernel modules: r8168

链接：http://forum.ubuntu.org.cn/viewtopic.php?f=77&t=187659