~$ lspci | grep Network
06:00.0 Network controller: Intel Corporation WiMAX/WiFi Link 5150
~$ rfkill list all
0: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
1: i2400m-usb:1-1.1:1.0: WiMAX
Soft blocked: yes
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes
~$ sudo rfkill unblock all
但 WiFi 仍处于禁用状态。以下是一些信息：
~$ sudo lshw -class network
*-network DISABLED
description: Wireless interface
product: WiMAX/WiFi Link 5150
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:06:00.0
logical name: wlan0
version: 00
serial: 00:16:eb:2b:1d:90
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.2.0-37-generic firmware=8.24.2.2 latency=0 link=no multicast=yes wireless=IEEE 802.11abg
我也尝试过：
- 将所有 BIOS 设置恢复为默认设置。
- 取出电池。
几天前它还有效，但现在我真的不知道该怎么办。有人能帮我吗？
更新：
~$ dmesg | grep iwl
[ 14.184885] iwlwifi 0000:06:00.0: found PCI INT A -> IRQ 10
[ 14.184885] iwlwifi 0000:06:00.0: sharing IRQ 10 with 0000:00:1c.0
[ 14.184885] iwlwifi 0000:06:00.0: sharing IRQ 10 with 0000:00:1c.4
[ 14.184885] iwlwifi 0000:06:00.0: sharing IRQ 10 with 0000:01:00.1
[ 14.184885] iwlwifi 0000:06:00.0: setting latency timer to 64
[ 14.184885] iwlwifi 0000:06:00.0: pci_resource_len = 0x00002000
[ 14.184885] iwlwifi 0000:06:00.0: pci_resource_base = ffffc90002184000
[ 14.184885] iwlwifi 0000:06:00.0: HW Revision ID = 0x0
[ 14.184885] iwlwifi 0000:06:00.0: irq 19 for MSI/MSI-X
[ 14.184885] iwlwifi 0000:06:00.0: Detected Intel(R) WiMAX/WiFi Link 5150 ABG, REV=0x44
[ 14.184885] iwlwifi 0000:06:00.0: L1 Disabled; Enabling L0S
[ 14.204887] iwlwifi 0000:06:00.0: device EEPROM VER=0x223, CALIB=0x4
[ 14.204887] iwlwifi 0000:06:00.0: Device SKU: 0Xb0
[ 14.204887] iwlwifi 0000:06:00.0: Valid Tx ant: 0X1, Valid Rx ant: 0X3
[ 15.048939] iwlwifi 0000:06:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
[ 15.048939] iwlwifi 0000:06:00.0: RF_KILL bit toggled to disable radio.
[ 15.104943] iwlwifi 0000:06:00.0: loaded firmware version 8.24.2.2
这是模块：
~$ lsmod
Module Size Used by
vesafb 13844 1
joydev 17693 0
ums_realtek 18248 0
snd_hda_codec_hdmi 32474 4
uas 18180 0
arc4 12529 2
nvidia 12319264 52
i2400m_usb 36569 0
i2400m 108026 1 i2400m_usb
wimax 34762 1 i2400m
rfcomm 47604 12
bnep 18281 2
parport_pc 32866 0
ppdev 17113 0
binfmt_misc 17540 1
snd_hda_codec_conexant 62358 1
snd_hda_intel 33773 7
snd_hda_codec 127706 3 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel
snd_hwdep 17764 1 snd_hda_codec
snd_pcm 97275 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
uvcvideo 72627 0
videodev 98259 1 uvcvideo
v4l2_compat_ioctl32 17128 1 videodev
btusb 18332 2
bluetooth 180153 23 rfcomm,bnep,btusb
psmouse 97485 0
snd_seq_midi 13324 0
snd_rawmidi 30748 1 snd_seq_midi
snd_seq_midi_event 14899 1 snd_seq_midi
mac_hid 13253 0
serio_raw 13211 0
iwlwifi 397059 0
mac80211 506862 1 iwlwifi
cfg80211 205774 2 iwlwifi,mac80211
snd_seq 61929 2 snd_seq_midi,snd_seq_midi_event
snd_timer 29990 3 snd_pcm,snd_seq
snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq
snd 79041 22 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
mei 41616 0
soundcore 15091 1 snd
snd_page_alloc 18529 2 snd_hda_intel,snd_pcm
lp 17799 0
parport 46562 3 parport_pc,ppdev,lp
usb_storage 49198 1 ums_realtek
usbhid 47238 0
hid 99636 1 usbhid
r8169 62154 0
答案1
此问题与 wifi linux 驱动程序效率低下有关。如果您有其他操作系统（例如 windows 7,8 ..）登录该操作系统并使用 fn + F6 打开 wifi 开关。在 Windows 中启用 wifi 适配器后，重新启动系统并登录 ubuntu 。然后您就可以使用 wifi 功能了。
干杯 Ubuntu 极客