That solution worked great for the OP there because they needed the suggested driver. However, yours is a rather common card, not as new as theirs, and thus it depends on a rather common driver. Your attempt to install that one and wifi working better must have been just coincidence, I don't think installing that driver would have helped your card in any way.
Originally Posted by Murdoc_of_puts
Also, since you are using kernel 3.13, your driver is newer than I usually suggest with this card (driver from kernel 3.12). So I doubt if changing driver is going to help.
However, there is something that you should try with the router -
The Access-Point you are currently connected to as per the report is using the dreaded TKIP encryption while the WPA2 standard requires AES (CCMP). I hate these vendors who allow such weird combinations, it shouldn't be an option in the first place. Apparently, most of your neighbours (or surrounding Access-Points in the same building) seem to be fond of TKIP and WPA/WPA2 mixed mode, plus, many of them are using channel "6" simultaneously to add to the problem. Please try the following in the router -
Change the encryption algorithm to AES (CCMP)
. The encryption type is good (WPA2), so leave it unchanged, just change the algorithm only. Even if it doesn't seem to help, keep this setting.
Try changing the channel to 1 or 11
. Channel 11 seems to be least used among all the surrounding Access-Points, so it should be best for you, but 1 is not too crowded either. Reboot the router after Saving any changes you make.
If you are using any of those routers/Access-Points that are using WPA/WPA2 mixed mode, change their encryption too to pure WPA2-PSK with AES (CCMP)
as suggested above.
Along with the above changes in the router, try some driver parameters in Ubuntu as suggested in this post : http://ubuntuforums.org/showpost.php?p=12815912
. If any of them seem helpful, you can make them permanent as suggested in posts #16 and #18 in the same thread.
For now, try these and let us know if the performance improves.