Ubuntu13.10安裝無線驅動

OS：Ubuntu 13.10桌面版

無線網卡：Broadcom BCM4312

情況描述：安裝完操作系統，發現無法通過WIFI上網。

解決思路：

A)去廠商官網下載和安裝Linux版網卡驅動

B)通過搜索引擎去嘗試解決問題

解決步驟：

1.去廠商官網下載網卡驅動的Linux版

a)確定無線網卡具體型號

administrator@Stevenash:~$ lspci |grep -i network
10:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)

b)官網驅動下載並提供安裝說明

http://www.broadcom.com/support/802.11/linux_sta.php

c)依照說明編譯並安裝驅動，由於沒有安全成功，忽略相關步驟，報錯信息如下：

/home/administrator/Downloads/hybird/src/wl/sys/wl_linux.c:3470:22: warning: assignment makes pointer from integer without a cast [enabled by default]
  if ((wl->proc_entry = create_proc_entry(tmp, 0644, NULL)) == NULL) {
                      ^
/home/administrator/Downloads/hybird/src/wl/sys/wl_linux.c:3475:16: error: dereferencing pointer to incomplete type
  wl->proc_entry->read_proc = wl_proc_read;
                ^
/home/administrator/Downloads/hybird/src/wl/sys/wl_linux.c:3476:16: error: dereferencing pointer to incomplete type
  wl->proc_entry->write_proc = wl_proc_write;
                ^
/home/administrator/Downloads/hybird/src/wl/sys/wl_linux.c:3477:16: error: dereferencing pointer to incomplete type
  wl->proc_entry->data = wl;
                ^
cc1: some warnings being treated as errors
make[2]: *** [/home/administrator/Downloads/hybird/src/wl/sys/wl_linux.o] Error 1
make[1]: *** [_module_/home/administrator/Downloads/hybird] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-3.11.0-12-generic'
make: *** [all] Error 2

2.通過搜索引擎去嘗試解決問題,長時間的搜索，終於找到解決方案

http://www.howopensource.com/2012/10/install-broadcom-sta-wireless-driver-in-ubuntu-12-10-12-04/

root@ubuntu:/# sudo apt-get install bcmwl-kernel-source
Reading package lists... Done
Building dependency tree     
Reading state information... Done
bcmwl-kernel-source is already the newest version.
The following packages were automatically installed and are no longer required:
  linux-headers-generic linux-image-generic
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@ubuntu:/# sudo modprobe -r b43 ssb wl
root@ubuntu:/# sudo modprobe wl

bcmwl-kernel-source文件存在系統鏡像中，需要把系統鏡像掛載。由於編譯產生的信息太多，有價值內容不多，故重新運行上述命令，只爲說明如何操作。

administrator@**:~$ sudo mkdir /media/cdrom
administrator@**:~$ sudo mount -o rw,loop /host/ubuntu-13.10-desktop-i386.iso  /media/cdrom
mount: block device /host/ubuntu-13.10-desktop-i386.iso is write-protected, mounting read-only