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I bought an Asus RT-N53 wifi router, and I'm having nightmarish performance issues with it. I have WPA2/AES encryption enabled, and I can connect to it from from an Ubuntu 12.04 laptop, but after a few minutes the network becomes completely unresponsive.

The connection doesn't appear to get dropped or disconnected (e.g. Network Manager shows it's still connected), but ping and traceroute just hang. If I do nothing, it seems to fix itself after 5-10 minutes, but it's infuriating to have my Internet connection randomly disappear. If I use a wired connection, this doesn't happen, so it's definitely not a problem with my actual Internet connection. If I manually turn my laptop's wifi on and off, the connection immediately comes back.

How would I diagnose what's causing this?

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closed as off topic by Michael Hampton, HopelessN00b, EEAA, Tom O'Connor, Dave M Feb 24 '13 at 16:36

Questions on Server Fault are expected to relate to server, networking, or related infrastructure administration within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

I think you should check:

  • Signal strenght changing router or client position
  • Change WiFi signal channel
  • Try to use WiFi with another device and another OS if is possible
  • Double check your configuration, thinking that some notebooks are not completely support 802.11n, so try also 802.11g configuration
  • Change the authentication in WPA(2)/PSK
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