Ubuntu 11.10 bcm4313 無綫上網超慢的解決方案

Ubuntu 11.10 還真是問題多多，感覺比11.04要差，更新了11.10後，發現無綫速度超慢，比以前慢太多，後來發現是Ubuntu11.10的默認的driver不行，把默認的driver放到blacklist裏面，install一個新的driver，就可以解決這個問題了（我用的網卡是BCM4313）

原文網址：

So, the latest ubuntu is out with the latest linux kernel and broadcom brcmsmac drivers.

As it happens the brcmsmac drivers suck. You can see the list of active wifi networks but won't be able to connect to them.

If the output of:

lspci -k | grep brcmsmac

includes:

Kernel driver in use: brcmsmac

Then you have this problem too.

To solve this, you'll need to install broadcom-sta driver and blacklist the default kernel one.

sudo apt-get install bcmwl-kernel-source

Then open /etc/modprobe.d/blacklist-bcm43.conf and add these lines:

blacklist brcmsmac blacklist bcma

Restart and check that:

lspci -k | grep wl

includes:

Kernel driver in use: wl

That should fix your wifi.

Hope ubuntu devs fix this and push out updates soon.

Bye!