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Wifi - 安装 Ubuntu 12.04 后无线网络不工作

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Wifi - 安装 Ubuntu 12.04 后无线网络不工作

我已经在我的 Dell Vostro 3460 上安装了 ubuntu 12.04。最初有线和无线都无法工作。

安装compat-wireless-2012-07-03-pc.tar.bz2有线网络后一切正常，但无线无法使用。以前在 ubuntu 11.10 上，两者均可正常工作。目前，在 Win7 上，两个网络均可正常工作。

lspci：

00:00.0 Host bridge: Intel Corporation Ivy Bridge DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Ivy Bridge PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation Panther Point USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation Panther Point MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 1 (rev c4)
00:1c.4 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 5 (rev c4)
00:1d.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation Panther Point LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation Panther Point 6 port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation Panther Point SMBus Controller (rev 04)
01:00.0 VGA compatible controller: NVIDIA Corporation Device 0de9 (rev a1)
02:00.0 Network controller: Broadcom Corporation Device 4365 (rev 01)
03:00.0 Ethernet controller: Atheros Communications Inc. AR8161 Gigabit Ethernet (rev 10)

iwconfig：

lo        no wireless extensions.
eth0      no wireless extensions.

ifconfig：

eth0      Link encap:Ethernet  HWaddr 84:8f:69:d4:35:9b  
          inet addr:10.24.22.72  Bcast:10.24.31.255  Mask:255.255.224.0
          inet6 addr: fe80::868f:69ff:fed4:359b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15332 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10425 errors:0 dropped:0 overruns:0 carrier:1
          collisions:0 txqueuelen:1000 
          RX bytes:9262594 (9.2 MB)  TX bytes:1572030 (1.5 MB)
          Interrupt:16 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1432 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1432 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:145656 (145.6 KB)  TX bytes:145656 (145.6 KB)

答案1

我有一台最近刚刚设置的 Vostro 1500，我必须进行 BIOS 更新才能使无线网络正常工作。

答案2

可能是 wifi 驱动程序问题。

尝试这样

首先我们必须删除 bcmwl 内核源：sudo apt-get remove bcmwl-kernel-source

然后再次安装：sudo apt-get install bcmwl-kernel-source

答案3

新安装后无法检测到 Wifi 或出现此类问题的另一个原因可能是无线网络适配器驱动程序存在问题。

您可以首先检查您的电脑上有哪个 Wifi 网络适配器。

lshw -C network

我的无线 N/W 适配器是 Realtek rtl8723be。因此我安装了以下驱动程序：

https://github.com/lwfinger/rtlwifi_new

谢谢。

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