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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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    You bought a piece of shit consumer router. Tough luck. Buy something better next time around. Cisco/Meraki/Aruba/Xirrus/Brocade Feb 24 '13 at 14:05
  • @TomO'Connor, That's not a helpful comment. I had Cisco router previously, and had equally horrible performance.
    – Cerin
    Feb 24 '13 at 16:53
  • It's an Asus. Serverfault is a community for professional server, networking and related infrastructure. Asus are none of those. Feb 24 '13 at 17:09
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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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