Wifi won't work without ethernet (Ubuntu 12.04)

Posted by alok on Ask Ubuntu See other posts from Ask Ubuntu or by alok
Published on 2012-06-30T20:31:08Z Indexed on 2012/06/30 21:25 UTC
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I have a strange problem. I am running Ubuntu 12.04 on a Dell Studio 1558 laptop. I'm usually unable to access Wifi (I have a BCM43224 wireless card with the STA proprietary driver installed.) So I have to unplug the ethernet cable from my Wifi router and stick it into my laptop's ethernet port to access the Internet. But when I stick the cable back into the Wifi router and try connecting to Wifi, Wifi inexplicably starts working. How can I get Wifi to work all the time without having to 'jumpstart' it with an ethernet connection?

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