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。