配备 BCM4313 无线网卡的 Dell Inspiron N4010 无法扫描/检测接入点

配备 BCM4313 无线网卡的 Dell Inspiron N4010 无法扫描/检测接入点

我有一台配备有 Broadcomm 4313 Wi-FI 芯片的戴尔 Inspiron N4010 笔记本电脑,并且安装了 Wi-FI 驱动程序,我可以打开 Wi-FI,但它无法检测接入点,甚至无法检测为测试而创建的临时网络。我同时启动了 Ubuntu 和 Windows,之前在 10.10 中也遇到过同样的问题,但重新启动并切换 Wi-FI 后问题解决了,但不知道。我包括了以下命令的输出。

saikiran@saikiran-Inspiron-N4010:~$ sudo lshw -class network
  *-network               
       description: Wireless interface
       product: BCM4313 802.11b/g/n Wireless LAN Controller
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wlan0
       version: 01
       serial: 70:f1:a1:8b:7a:38
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=brcmsmac driverversion=3.0.0-12-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
       resources: irq:17 memory:f0300000-f0303fff
  *-network
       description: Ethernet interface
       product: AR8152 v1.1 Fast Ethernet
       vendor: Atheros Communications
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: eth0
       version: c1
       serial: b8:ac:6f:5a:6f:a6
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-NAPI firmware=N/A latency=0 link=no multicast=yes port=twisted pair
       resources: irq:45 memory:f0200000-f023ffff ioport:3000(size=128)

saikiran@saikiran-Inspiron-N4010:~$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=19 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off

ppp0      no wireless extensions.

saikiran@saikiran-Inspiron-N4010:~$ rfkill list
0: dell-wifi: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: dell-bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
3: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

saikiran@saikiran-Inspiron-N4010:~$ sudo iwlist scan
[sudo] password for saikiran: 
lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

wlan0     No scan results

ppp0      Interface doesn't support scanning.

ubuntu 在启动时会扫描网络吗?

更新:我重新安装了操作系统,同时尝试 liveCD Wi-FI 运行并检测 AP(接入点),而无需安装 prosperities 驱动程序。安装后,同样的问题再次出现。

更新:我重新安装了操作系统和驱动程序,还安装了 ia32-libs,突然 wifi 检测到接入点,但有些不稳定,当它检测不到时必须关闭 wifi 重新启动。有时当你关闭和打开 wifi 时,它会说设备尚未准备好我必须重新启动才能使其工作。有人能解释一下这次失败吗?

答案1

您应该使用网络管理器连接到无线网络。它会定期扫描无线网络。检查您的笔记本电脑是否有一些硬件按钮可以打开/关闭 Wi-Fi。

或者您可以使用 LAN 电缆连接到互联网并安装 WiCd。

答案2

尝试禁用硬件驱动程序。

奇怪的是,当我在同一硬件上安装 11.10 时,它在安装时显示网络。后来,当操作系统启动并且 Broadcom 驱动程序处于活动状态时,我看不到任何网络。禁用硬件驱动程序,然后就好了。我猜这只是一些错误。

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