更新至14.04,无法连接无线网络

更新至14.04,无法连接无线网络

所以我拿出了 5 年多前的上网本,将 Ubuntu 更新到 14.04 版(从 10.04 版开始),现在它可以看到无线连接,并且显示已连接,但它不会在浏览器中加载任何页面,也不会加载路由器的站点。我可以通过以太网连接。

请注意,我是 Linux 新手,我只知道通过谷歌搜索这个问题并看到其他人发布了这些命令 - 如果还有其他我应该发布的内容,请告诉我,如果你能像我 5 岁的孩子一样解释解决方案,它可能会有很大帮助!

我已经尝试过的解决方案:

  • sudo apt-get 更新

  • sudo apt-get 安装固件-b43-安装程序

命令iwconfig

wlan0    IEEE 802.11abg  ESSID:"aterm-f78fa8-g"
         Mode:Managed  Frequency:2.457 GHz  Access Point: 10:66:82:4D:34:DC
         Bit Rate=26 Mb/s  Tx-Power=200 dBm
         Retry  long limit:7  RTS thr:off  Fragment thr:off
         Encryption key:off
         Link Quality=70/70  Signal level=-22 dBm
         Rx invalid nwid:0  Rx invalid crypt: 0  Rx invalid frag:0
         Tx excessive retries:0  Invalid misc:0  Missed beacon:0

lo       no wireless extensions

eth0     no wireless extensions

sudo lspci-v

05:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adaptor (rev 01)
        Subsystem: Askey Computer Corp. Device 7179
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at f0100000 (64-bit, non-prefetchable) {size=16K]
        Capabilities: [40] Power Management version 3
        Capabilities: [58] Vendor Specific Information: Len=78 <?>
        Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+
        Capabilities: [d0] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [13c] Virtual Channel
        Capabilities: [160] Device Serial Number 00-00-9f-ff-ff-52-b4-74
        Capabilities: [16c] Power Budgeting <?>
        Kernel driver in use: wl

sudo lshw -c 网络

*-network
        description: Ethernet interface
        product: RTL8101E/RTL8102EPCI Express Fast Ethernet controller
        vendor: Realtek Semiconductor Co., Ltd.
        physical id: 0
        bus info: pci@0000:09:00.0
        logical name: eth0
        version: 05
        serial: e8:11:32:2c:5c:d6
        size: 10Mbit/s
        capacity: 100Mbit/s
        width: 64 bits
        clock: 33MHz
        capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
        configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8105e-1.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s
        resources: irq:44 ioport:2000(size=256) memory:f050c000-f050cfff memory:f0508000-f050bfff

答案1

您的iwconfig输出未提及任何有关电源管理的信息。请尝试以下操作:

  1. 启动终端(++ Ctrl)并输入:AltT
    sudo touch /etc/pm/power.d/wireless
  2. sudo chmod 755 /etc/pm/power.d/wireless
  3. sudo gedit /etc/pm/power.d/wireless
  4. 将以下内容复制粘贴到打开的文件中:
    !/bin/sh /sbin/iwconfig wlan0 power on

  5. 保存文件并关闭 gedit。

  6. sudo reboot

答案2

也许您需要重新启动 NetworkManager。试sudo service network-manager restart一次。它可能只是一个临时解决方案(最有可能),或者由于某种原因它可能永久起作用。(我不知道,也许 networkmanager 只是需要被唤醒?

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