New wireless adapter problems

[whowantspi]

I have been using an Edimax EW-7811Un wireless adapter with no problems other than limited range. To try to get better range I purchased one that is almost like this one.
http://www.premiertek.net/products/netw ... 8191S.html

I don't see the exact same one so what I got maybe last years model. It reports as having a Realtek RTL8191SU chipset. It connects, but drops the connection about a minute later. I have tried it plugged directly into the Pi as well as with a powered hub. The Pi and the hub have their own 5v 2a powersupply thats well regulated. If I reboot it will connect and then drop every time. I first thought that it may have been a defective unit so I tried it with a windows 7 computer and it has worked fine for the last 5 days. Being new to Linux, I don't have a clue where to start trouble shooting. If I'm not able to get this one working, is there a model that is known to work with the Pi that works long range (50 meters or more)? Any help would be appreciated.

Max

[Cloudcentric]

I have never had an issues with these ones http://www.ebay.co.uk/itm/New-Rasberry- ... 0826199518

[pjc123]

I have a Edimax EW-7811Un clone as well as a TP-Link TL-WN722N. The TP-Link gets better reception and range, and that is its claim to fame, but I never tested the actual distance; this is something I am eventually going to test. It comes with a detachable antenna, and I have also ordered a higher gain antenna as well. Another option is Alfa high gain adapters, although I can't verify that anyone has been able to get those to work with the pi.

[whowantspi]

Since it works fine on a window 7 box I would think this is a driver issue. Is there a way of getting updated drivers? Apt-get install realtek says they are already installed.

I found drivers at this site. The first group is for the 8191SU

http://www.realtek.com/downloads/downlo ... loads=true

Can anyone help me install these. I haven't a clue what to do.

Max

[pjc123]

You have to use software that is written for an ARM processor.

To update all your software first run the following to get the list of packages:

sudo apt-get update

When that has completed, then run the following to upgrade everything:

sudo apt-get upgrade

Then restart the pi (Turn off and back on or reboot) so everything gets re-initialized.

If that does not help, then you can update the firmware:

sudo rpi-update