双系统win7和ubuntu14.04, ubuntu搜得到但是连不上wifi

[laocan]

双系统win7和ubuntu14.04, ubuntu搜得到但是连不上wifi

ubuntu 的信号比win7下要差好多，同一个wifi下，手机速度很快，但ubuntu搜得到wifi，但是连接一直不成功。最后只能用usb线，让手机给ubuntu提供网络。

本子是thinkpad t430u
硬件信息：
*-network
description: Network controller
product: BCM4313 802.11bgn Wireless Network Adapter
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:03:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=bcma-pci-bridge latency=0
resources: irq:17 memory:e4700000-e4703fff

*-network:0
description: Wireless interface
physical id: 2
logical name: wlan0
serial: 20:16:d8:1f:fa:42
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=brcmsmac driverversion=3.13.0-39-generic firmware=610.812 link=no multicast=yes wireless=IEEE 802.11bgn

这里信息有些不是很懂，求助~~
谢谢！

[poloshiao]

把下面指令 複製 貼進終端機 執行
0. uname -r
1. sudo lspci -knn
2. sudo lshw -numeric -class network
3. sudo ifconfig -a
4. sudo route -nv
5. sudo rfkill list all
把結果直接 選取 / 複製 / 貼上來