更新驱动
http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=13&PFid=5&Level=5&Conn=4&DownTypeID=3&GetDown=false#2
选择上面这个链接中unix条目下那个“LINUX driver for kernel 3.x and 2.6.x and 2.4.x”、版本为“8.039”的文件下载
解压: tar xf r8168-8.039.00.tar.bz2
cd r8168-8.039.00
sudo ./autorun.sh
重启ubuntu
done !!!
原文:http://www.cnblogs.com/bushe/p/4455696.html