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I have installed Ubuntu on my 6-year-old Acer Aspire 4310 and I love it's lightning speed. But now I have a big problem, that is it cannot connect to any wireless network which worked well in my Windows. The wireless switch is not responding to me (I guess it only works on Windows). There are also no wireless toggle switch on my keyboard.

I have installed my driver, yeah, a proprietary driver and I don't see my wireless network anymore, even the enabling and disabling button in the System Settings are missing. I was able to connect my wireless network during the Ubuntu installation. So what's the problem? I cannot find wlan0 in the ifconfig output.

I can still see the enable and disable button in the System Settings before I installed the driver. Now, even after removing the driver, it will no longer display. I wanted my WiFi back. Please help.

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i can connect with the ethernet cable –  angjinhang Sep 13 '12 at 2:32
    
Type on Terminal: sudo lspci and look for the wifi device, and post it here. –  ThiagoPonte Sep 13 '12 at 2:37
    
@ThiagoPonte, no need for sudo with lspci. :~) –  mikewhatever Sep 13 '12 at 2:55
    
Thanks for the info. –  ThiagoPonte Sep 14 '12 at 11:08
    
Take a look in this question and specially in answer "Wireless Cards". Then edit your question and add more informations. –  NikTh Oct 21 '12 at 12:28
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