Public bug reported:
It seems that network-manager (or maybe network-manager-kde) just
selects an AP by the Strength and do not take the frequency in account.
We have a large, crowded wireless network with APs supporting both
802.11a/n and 802.11b/g/n.
Sitting directly beneath the AP (output of nm-tool):
*h_da: Infra, 00:26:3E:14:72:02, Freq 2437 MHz, Rate 54 Mb/s,
Strength 100 WPA WPA2 Enterprise
h_da: Infra, 00:26:3E:14:72:03, Freq 5180 MHz, Rate 54 Mb/s,
Strength 85 WPA WPA2 Enterprise
As you can see the 802.11b/g/n band gets selected. But 802.11a/n would
be much better (less clients, less noise, more available frequencies
thus less overlapping).
It is not an option to enter the APs by BSSID to prefer 802.11a/n - our
university has many APs installed..
** Affects: ubuntu
Importance: Undecided
Status: New
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Network-manager should prefer 802.11a
https://bugs.launchpad.net/bugs/661016
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