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I am using Ubuntu 12.04 on my Dell Inspiron 1545 and I can successfully connect to the Internet using an Ethernet cable but not when I try and connect through the wifi.

Any help would be appreciated.

My Wireless Card Details:-

Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)

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    Please edit your question to add details of your wireless card from the terminal command: lspci -nn | grep 0280 – chili555 Aug 25 '13 at 16:02
  • Check this askubuntu.com/questions/141834/… – user187181 Aug 25 '13 at 16:02
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Please obtain a working ethernet connection, open a terminal and do:

sudo apt-get install firmware-b43-lpphy-installer

After it completes, detach the ethernet and do:

sudo modprobe -r b43 && sudo modprobe b43

Your wireless should be working. In a few cases, it takes a reboot.

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