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I have just installed Ubuntu 12.04 LTS along with the standard Windows 7 on my new HP pavillion g6 (AMD).

They both work fine but when I am running Ubuntu, the wifi signal strength shows low (occasionally disconnecting). If I run Windows 7, the signal is always very strong and it never disconnects.

How can that be and is there a fix?

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Welcome to Ask Ubuntu! We need more hardware information to help you, can you look at this question and then edit your question adding the information. –  Jorge Castro May 9 '12 at 1:57
    
@Hub, you have to install the wi-fi drivers to get full signal. You can search for additional drivers on dash and then install the driver. –  Ankit Nov 23 '12 at 10:48
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2 Answers

Did you try this?

sudo iwconfig wlan0 power off

(Assuming wlan0 is the wireless interface you're running.)

This may fix the problem. This does not turn off your wireless card; rather, it disables power management for your wireless card. See man iwconfig for details.

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I had the same problem on my HP.

I just changed default Ubuntu wireless driver to Broadcom in "System settings"-> "Software sources" -> "Additional drivers".

Everything works fine for now.

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