This seems to be a timing thing.
I'm having the same problem and my log lists
NetworkManager: <info> (wlan0): supplicant connection state change: 0 -> 2
NetworkManager: <info> (wlan0): supplicant connection state change: 2 -> 0
NetworkManager: <info> (wlan0): supplicant connection state change: 0 -> 2
NetworkManager: <info> (wlan0): supplicant connection state change: 2 -> 0
NetworkManager: <info> wlan0: link timed out.
NetworkManager: <info> (wlan0): supplicant connection state change: 0 -> 2
NetworkManager: <info> (wlan0): supplicant connection state change: 2 -> 0
NetworkManager: <info> Activation (wlan0/wireless): association took too long.
NetworkManager: <info> (wlan0): device state change: 5 -> 6
NetworkManager: <info> Activation (wlan0/wireless): asking for new secrets
Sometime, very occasionally, it will authenticate and then it seems to
stay authenticated. I'm sat about 6 feet from the AP aerial so I get
something like 97% signal strength according to nm-tool. But, this looks
a little strange as they seem to be the same MAC (unless I'm
misunderstanding what the output of nm-tool gives)
Wireless Access Points
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 98
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 95
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 92
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 93
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 91
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 93
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 99
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 98
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 98
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 97
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 97
<Network Name>: Infra, 00:1B:90:57:36:40, Freq 2422 MHz, Rate 54
Mb/s, Strength 97
I sometimes had this issue with 8.04 as well but the 8.10 RC seems to be
worse.
Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron]
Network Connection (rev 61)
Linux xxxxxxxxx 2.6.27-7-generic #1 SMP Fri Oct 24 06:40:41 UTC 2008 x86_64
GNU/Linux
Samsung X65 laptop.
--
[Intrepid] iwl3945 + iwl4965 -- network-manager will not connect to a WPA EAP
(Enterprise) network (disassociating by local choice (reason=3) )
https://bugs.launchpad.net/bugs/272185
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