Ubuntu 14.04 中的 Wifi 和以太网网络停止工作

Question

我有一个 System76 Kudu Professional 版本 kudp1，它附带 ubuntu 13.10，但我将其升级到 14.04。上次升级后，它停止检测以太网和 wifi 网络。

nm 工具输出：

NetworkManager Tool
State: disconnected

sudo lshw -C 网络输出：

*-network UNCLAIMED     
     description: Network controller
     product: Wireless 7260
     vendor: Intel Corporation
     physical id: 0
     bus info: pci@0000:04:00.0
     version: 73
     width: 64 bits
     clock: 33MHz
     capabilities: pm msi pciexpress bus_master cap_list
     configuration: latency=0
     resources: memory:f7d00000-f7d01fff
*-network UNCLAIMED
     description: Ethernet controller
     product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
     vendor: Realtek Semiconductor Co., Ltd.
     physical id: 0.2
     bus info: pci@0000:05:00.2
     version: 0a
     width: 64 bits
     clock: 33MHz
     capabilities: pm msi pciexpress msix vpd bus_master cap_list
     configuration: latency=0
     resources: ioport:e000(size=256) memory:f0004000-f0004fff memory:f0000000-f0003fff

系统配置输出：

lo        no wireless extensions.

纳米输出：

RUNNING         STATE           WIFI-HARDWARE   WIFI       WWAN-HARDWARE   WWAN      
running         disconnected    enabled         enabled    enabled         enabled

在此先感谢所有关注此问题的人。