On Tue, 2010-10-12 at 14:17 -0700, Mark Hedges wrote: > Package: linux-source-2.6.32 > Version: 2.6.32-23 > Severity: normal > > > Oct 12 14:08:36 maggie kernel: [435532.500060] No probe response from AP 00:0f:66:0b:45:5a after 500ms, disconnecting. > Oct 12 14:08:36 maggie wpa_supplicant: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys > Oct 12 14:08:36 maggie NetworkManager: <info> (wlan0): supplicant connection state: completed -> disconnected > Oct 12 14:08:36 maggie NetworkManager: <info> (wlan0): supplicant connection state: disconnected -> scanning > > This happens from time to time and is a little annoying. When it happens, > I'm able to reconnect. Other people in the cafe don't seem to have any > service interruption. Is there a way this probe timeout could be increased > to accommodate a buggy AP? This probe timeout is applied by the software 802.11 stack (mac80211), not specifically the iwl3945 driver. If I understand correctly, it repeats the probe request up to 5 times if no response is received. Thus this disconnection occurs only when communication with the AP has been broken for 2.5 seconds. I doubt that increasing this time limit will fix the problem; more likely there is a bug elsewhere that causes frames to be dropped or sent at too low a power level. Please test Linux 2.6.36-rc6 as packaged in experimental and report whether this makes any difference. Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse.
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