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  Why does my Intel card consistently pick 2.4 GHz over 5 GHz?
http://kb.netgear.com/app/answers/detail/a_id/24246/~/what-i...

"Overall the 5GHz has shorter range compared to the 2.4GHz. It is recommended to select the 2.4 GHz if you using computers and wireless devices to access the Internet for simple browsing and email. These applications do not take too much bandwidth and work fine at a greater distance.

However, if you are in a place which is crowded with more wireless signals, it is advisable to use the 5GHz network to avoid interferences. Furthermore, the 5GHz is most suited for devices which require uninterrupted wider bandwidth for video/audio streaming or multimedia content."

  I can sit literally right next to an AP and get a connection on the lowest basic rate
It's possible that Linux is more likely to reduce your rate in the face of increasing errors and noise, whereas other OSes/drivers might ignore the noise/errors and keep the rate the same, regardless of literally not having the advertised throughput.

  In any case, even the WPA2 setup is slow for some reason, it's not just DHCP.
Both your DHCP client and your WPA client are not optimized for speed on Linux, they are optimized for reliability.

  it's not unusual at all to be stuck at some low-speed AP when a higher-speed one is available
Yeah; your wireless client isn't going to change APs until it loses signal.

Most of these complaints are industry issues that have different proprietary fixes intended to appease consumers, but none of them are recommended or required by the industry.



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