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全新安装 ubuntu 12.04 后 Dell E6500 无线无法工作

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全新安装 ubuntu 12.04 后 Dell E6500 无线无法工作

我刚刚安装了 ubuntu 12.04。安装后，无线无法使用。在极少数情况下，它有时会显示无线可用但频率非常低。当我将笔记本电脑和模式放在它旁边时，就会发生这种情况。我验证了它在 Windows XP 上运行良好（我的另一台笔记本电脑）。

请帮助我，我对这个新版本感到非常沮丧，并且自从上周以来一直在努力寻求解决方案。

以下是我在 google.com 帮助下在终端中运行的代码列表。这可能有助于解决我的问题。

================================================================

cat /etc/lsb-release; uname -a
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
Linux Chunmun 3.2.0-27-generic-pae #43-Ubuntu SMP Fri Jul 6 15:06:05 UTC 2012 i686 i686 i386 GNU/Linux


nprakash@Chunmun:~$  lspci -nnk | grep -iA2 net
00:19.0 Ethernet controller [0200]: Intel Corporation 82567LM Gigabit Network Connection [8086:10f5] (rev 03)
    Subsystem: Dell Device [1028:024f]
    Kernel driver in use: e1000e

0c:00.0 Network controller [0280]: Intel Corporation Ultimate N WiFi Link 5300 [8086:4235]
    Subsystem: Intel Corporation Device [8086:1121]
    Kernel driver in use: iwlwifi

系统盘

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 0c45:63f0 Microdia 
Bus 003 Device 006: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 005 Device 002: ID 0a5c:5801 Broadcom Corp. BCM5880 Secure Applications Processor with fingerprint swipe sensor
Bus 003 Device 007: ID 413c:8157 Dell Computer Corp. Integrated Keyboard
Bus 003 Device 008: ID 413c:8158 Dell Computer Corp. Integrated Touchpad / Trackstick
Bus 003 Device 009: ID 413c:8156 Dell Computer Corp. Wireless 370 Bluetooth Mini-card

================================================================

iwconfig

lo        no wireless extensions.

wlan0     IEEE 802.11abg  ESSID:"ghar"  
      Mode:Managed  Frequency:2.462 GHz  Access Point: 80:A1:D7:7C:30:50   
      Bit Rate=1 Mb/s   Tx-Power=15 dBm   
      Retry  long limit:7   RTS thr:off   Fragment thr:off
      Power Management:off
      Link Quality=29/70  Signal level=-81 dBm  
      Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
      Tx excessive retries:5  Invalid misc:1117   Missed beacon:0

eth0      no wireless extensions.


rfkill list

0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

答案1

在终端上轻松完成此操作，它将起作用：

sudo apt-get install linux-firmware-nonfree
sudo modprobe -r b43
sudo modprobe b43

瞧，成功了。

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