我一直在努力尝试激活我的以太网连接但没有成功。我在戴尔 xps8900 上使用 ubuntu 14.04 LTS。我有一个带有 Windows 7 的双启动，以太网在这个上运行良好。这是我尝试过的：
1) 验证网卡：
>lspci
00:00.0 Host bridge: Intel Corporation Device 191f (rev 07)
00:01.0 PCI bridge: Intel Corporation Device 1901 (rev 07)
00:14.0 USB controller: Intel Corporation Device a12f (rev 31)
00:14.2 Signal processing controller: Intel Corporation Device a131 (rev 31)
00:16.0 Communication controller: Intel Corporation Device a13a (rev 31)
00:17.0 RAID bus controller: Intel Corporation 82801 SATA Controller [RAID mode] (rev 31)
00:1c.0 PCI bridge: Intel Corporation Device a110 (rev f1) …