我正在使用 Zotac ZBOX IQ-01，上面装有 Ubuntu 14.04。它一直运行良好，直到我重新启动它，启动时开始出现一条消息，提示网络已断开连接。可用的 WiFi 网络不再出现，如果我尝试：
$ ifcongig
出现以下内容：
eth0 Link encap:Ethernet HWaddr 00:01:2e:4e:fb:da
inet addr:192.168.2.114 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::201:2eff:fe4e:fbda/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:695 errors:0 dropped:0 overruns:0 frame:0
TX packets:691 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:242341 (242.3 KB) TX bytes:136667 (136.6 KB)
eth1 Link encap:Ethernet HWaddr 00:01:2e:4e:fb:db
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:575 errors:0 dropped:0 overruns:0 frame:0
TX packets:575 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:52103 (52.1 KB) TX bytes:52103 (52.1 KB)
你可以看到 wlan0 不再可见，并且执行完
$ iwconfig
我得到：
eth0 no wireless extensions.
eth1 no wireless extensions.
lo no wireless extensions.
如果我尝试：
lspci
我得到：
00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d5)
00:1c.4 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #5 (rev d5)
00:1c.5 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #6 (rev d5)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation H87 Express LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)
WiFi 适配器是 Intel(R) 双频 Wireless-AC 3160 型号：3160HMW。它似乎也是一个蓝牙控制器，但蓝牙似乎可以继续正常工作。
发生了什么？我该怎么办？是硬件故障吗？也许是升级后控制器出现故障？谢谢！
答案1
检查 iwlwifi 模块是否已加载。您可以输入以下命令来执行此操作：
lsmod | grep iwlwifi
如果结果为空，请尝试输入：
modprobe iwlwifi
如果这不能恢复你的 wifi 适配器，请尝试输入
dmesg | grep iwl
看看这是否可以给你提供一些提示，说明为什么你仍然遇到问题。