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I'm using Ubuntu 12.04 LTS on my Aspire 3820TG which comes with an Artheros AR9287. Somehow the Wireless performance is to put it mildly sub-optimal. I thought it might have something to do with the Txpower which is only at 13 dBm but unfortunately I'm unable to set it to a higher level. Any ideas how to increase the sending power or how to improve the performance in general?

Thanks a lot in advance

JO

JOHO
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2 Answers2

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This bug has been driving me nuts for several months. I tried several fixes (nohwcrypt=1, blacklisting various drivers, etc.) Nothing worked for more than a few minutes until I tried the solution here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1046800

The place to download the updated kernel stuff is here: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6.3-quantal/

(I have precise, not quantal, but it doesn't seem to make a difference.)

You will need to get the following header packages:

  • linux-headers specific to your architecture (i386 or x64)
  • linux-headers (all)

You will also need to get the following kernel packages:

  • linux-image for your architecture
  • linux-image-extras for your architecture

Once you have the packages, you can install each one like this:

sudo dpkg -i (name of file)

That done, reboot the machine, and you should be good.

After running for half an hour, this is the statistics (mtr) for pinging my router:

Loss%   Snt   Last   Avg  Best  Wrst StDev
 0.1%  1715    2.0   4.6   1.5 460.1  21.0

This is NOT as reliable as it is in Windows, so I think the driver maintainers still have some work to do. However, it's orders of magnitude better than it was before!

Eric Carvalho
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Huns
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I had the same problem on another chipset. I solved it by updating the kernel from 3.2 to 3.4.

This is how to install this kernel:

http://linuxmx.it/guide/ubuntu/334-kernel-3-4-su-ubuntu-12-04-e-derivate-2.html

However the only little problem i had with this kernel, was that Nvidia propietary drivers was dissapeared.

Mariusz B.
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