Ubuntu,ThinkPad E420 Wifi不能联网问题

Ubuntu,ThinkPad E420 wifi不能联网问题



// 打印系统信息

cxl@cxl-ThinkPad-E420:~$ cat/etc/lsb-release; uname -a

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=11.10

DISTRIB_CODENAME=oneiric

DISTRIB_DESCRIPTION="Ubuntu11.10"

Linux cxl-ThinkPad-E420 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 714:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux



// lspci-nnk, lspci 列出所有PCI设备, -nn列出vendor的设备好和名称，k显示内核或内核模块处理的设备.

cxl@cxl-ThinkPad-E420:~$ lspci -nnk |grep -iA2 net

03:00.0 Ethernet controller [0200]: Realtek SemiconductorCo., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev06)

Subsystem: Lenovo Device [17aa:21e2]

Kernel driver in use:r8169

--

09:00.0 Network controller [0280]: RealtekSemiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter [10ec:8176] (rev01)

Subsystem: Realtek Semiconductor Co., Ltd. Device[10ec:8195]

Kernel driver in use: rtl8192ce
  

//类似ipconfig,配置无线网络接口

cxl@cxl-ThinkPad-E420:~$iwconfig

lo        no wireless extensions.



eth0     no wireless extensions.



wlan0     IEEE 802.11bgn ESSID:off/any  

          Mode:Managed  Access Point: Not-Associated  Tx-Power=20 dBm  

          Retry  long limit:7   RTS thr=2347 B  Fragment thr:off

          Power Management:off



//列出所有的可被rfkill工具使用的设备状态.

cxl@cxl-ThinkPad-E420:~$ rfkill listall

0: hci0: Bluetooth

Soft blocked: no

Hard blocked:no

1: acer-wireless: Wireless LAN

Soft blocked: yes

Hardblocked: no

2: tpacpi_bluetooth_sw: Bluetooth

Soft blocked: no  

Hard blocked: no

3: phy0: Wireless LAN

Soft blocked:no

Hard blocked: no



// 列出已经安装的模块

cxl@cxl-ThinkPad-E420:~$lsmod

Module                  Size  Usedby

bnep                   18436  2

rfcomm                47946  8

parport_pc             36962  0

ppdev                  17113  0

binfmt_misc            17540 1

snd_hda_codec_hdmi     32040  1

snd_hda_codec_conexant   62197  1

joydev                 17693  0

arc4                   12529  2

thinkpad_acpi          81819 0

snd_hda_intel          33390  2

snd_hda_codec        104802  3snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel

snd_hwdep             13668  1 snd_hda_codec

acer_wmi               23948  0

sparse_keymap          13890  1 acer_wmi

snd_pcm               96755  3snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec

snd_seq_midi          13324  0

snd_rawmidi            30547  1snd_seq_midi

uvcvideo               72711  0

videodev               93004  1 uvcvideo

v4l2_compat_ioctl32   17083  1 videodev

snd_seq_midi_event     14899  1snd_seq_midi

snd_seq                61896  2snd_seq_midi,snd_seq_midi_event

btusb                  18600  2    

bluetooth             166112  23bnep,rfcomm,btusb

psmouse                73882  0

serio_raw              13166  0

rtl8192ce              84775 0

rtl8192c_common        75767  1rtl8192ce

rtlwifi               110972  1rtl8192ce

mac80211              310872  3rtl8192ce,rtl8192c_common,rtlwifi

snd_timer              29991  2snd_pcm,snd_seq

snd_seq_device         14540  3snd_seq_midi,snd_rawmidi,snd_seq

cfg80211              199587  2rtlwifi,mac80211

snd                    68266  15snd_hda_codec_hdmi,snd_hda_codec_conexant,thinkpad_acpi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device

nvram                 14413  1 thinkpad_acpi

wmi                    19256  1acer_wmi

radeon               1015995  0

ttm                   76805  1 radeon

i915                  566711  3

soundcore              12680  1 snd

snd_page_alloc        18529  2 snd_hda_intel,snd_pcm

drm_kms_helper         42558  2radeon,i915

drm                   236330  6radeon,ttm,i915,drm_kms_helper

mei                    41480  0

i2c_algo_bit           13423  2radeon,i915

video                  19412  1i915

lp                     17799  0  

parport               46562  3 parport_pc,ppdev,lp

sdhci_pci              14032  0

sdhci                  32166  1sdhci_pci

ahci                   26002  3

libahci                26861  1 ahci

r8169                 52788  0



--------------solution-----------:

sudormmod -f acer-wmi   //移除 acer-wmi模块，-f force a mod unload

sudo rfkillunblock all        //rfkill 打卡或者关闭无线设备的命令, unblock 打开无线设备，all所有的