Ubuntu,ThinkPad E420 Wifi不能連網問題 // 列印系統資訊cxl@cxl-ThinkPad-E420:~$ cat /etc/lsb-release; uname -aDISTRIB_ID=Ubuntu www.2cto.com DISTRIB_RELEASE=11.10DISTRIB_CODENAME=oneiricDISTRIB_DESCRIPTION="Ubuntu 11.10"Linux cxl-ThinkPad-E420 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux // lspci -nnk, lspci 列出所有PCI裝置, -nn列出vendor的裝置好和名稱,k顯示核心或核心模組處理的裝置.cxl@cxl-ThinkPad-E420:~$ lspci -nnk | grep -iA2 net03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 06)Subsystem: Lenovo Device [17aa:21e2]Kernel driver in use: r8169--09:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter [10ec:8176] (rev 01)Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:8195]Kernel driver in use: rtl8192ce www.2cto.com // 類似ipconfig,配置無線網路介面cxl@cxl-ThinkPad-E420:~$ iwconfiglo 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工具使用的裝置狀態.cxl@cxl-ThinkPad-E420:~$ rfkill list all0: hci0: BluetoothSoft blocked: noHard blocked: no1: acer-wireless: Wireless LANSoft blocked: yesHard blocked: no2: tpacpi_bluetooth_sw: BluetoothSoft blocked: no www.2cto.com Hard blocked: no3: phy0: Wireless LANSoft blocked: noHard blocked: no // 列出已經安裝的模組cxl@cxl-ThinkPad-E420:~$ lsmodModule Size Used bybnep 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 3 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intelsnd_hwdep 13668 1 snd_hda_codecacer_wmi 23948 0 sparse_keymap 13890 1 acer_wmisnd_pcm 96755 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codecsnd_seq_midi 13324 0 snd_rawmidi 30547 1 snd_seq_midiuvcvideo 72711 0 videodev 93004 1 uvcvideov4l2_compat_ioctl32 17083 1 videodevsnd_seq_midi_event 14899 1 snd_seq_midisnd_seq 61896 2 snd_seq_midi,snd_seq_midi_eventbtusb 18600 2 www.2cto.com bluetooth 166112 23 bnep,rfcomm,btusbpsmouse 73882 0 serio_raw 13166 0 rtl8192ce 84775 0 rtl8192c_common 75767 1 rtl8192certlwifi 110972 1 rtl8192cemac80211 310872 3 rtl8192ce,rtl8192c_common,rtlwifisnd_timer 29991 2 snd_pcm,snd_seqsnd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seqcfg80211 199587 2 rtlwifi,mac80211snd 68266 15 snd_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_devicenvram 14413 1 thinkpad_acpiwmi 19256 1 acer_wmiradeon 1015995 0 ttm 76805 1 radeoni915 566711 3 soundcore 12680 1 sndsnd_page_alloc 18529 2 snd_hda_intel,snd_pcmdrm_kms_helper 42558 2 radeon,i915drm 236330 6 radeon,ttm,i915,drm_kms_helpermei 41480 0 i2c_algo_bit 13423 2 radeon,i915video 19412 1 i915lp 17799 0 www.2cto.com parport 46562 3 parport_pc,ppdev,lpsdhci_pci 14032 0 sdhci 32166 1 sdhci_pciahci 26002 3 libahci 26861 1 ahcir8169 52788 0 --------------solution-----------:sudo rmmod -f acer-wmi //移除 acer-wmi模組,-f force a mod unload sudo rfkill unblock all //rfkill 打卡或者關閉無線裝置的命令, unblock 開啟無線裝置,all 所有的 作者 iamcxl369