linux-kernel - Re: iwlagn is getting very shaky

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Date:	Thu, 20 Oct 2011 09:40:18 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Norbert Preining <preining@...ic.at>
Cc:	"Guy, Wey-Yi" <wey-yi.w.guy@...el.com>,
	David Rientjes <rientjes@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ipw3945-devel@...ts.sourceforge.net" 
	<ipw3945-devel@...ts.sourceforge.net>,
	"ilw@...ux.intel.com" <ilw@...ux.intel.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: iwlagn is getting very shaky

On Thu, 2011-10-20 at 13:59 +0900, Norbert Preining wrote:

> so I am now at the university, and it seems your last patch
> did wonder. Here a log after waking up from suspend at university...

For some value of wonder ...

> [17394.896199] wlan0: associated
> [17394.974620] iwlagn 0000:06:00.0: Encounter TX_STATUS_FAIL_PASSIVE_NO_RX, am I on 5.2G band? (2)
> [17394.976930] iwlagn 0000:06:00.0: Encounter TX_STATUS_FAIL_PASSIVE_NO_RX, am I on 5.2G band? (2)
> [17409.608674] iwlagn 0000:06:00.0: Tx aggregation enabled on ra = 00:24:c4:ab:bd:ef tid = 0
> [17409.616748] wlan0: direct probe to 00:24:c4:ab:bd:e0 (try 1/3)
> [17409.816093] wlan0: direct probe to 00:24:c4:ab:bd:e0 (try 2/3)
> [17410.016083] wlan0: direct probe to 00:24:c4:ab:bd:e0 (try 3/3)
> [17410.216086] wlan0: direct probe to 00:24:c4:ab:bd:e0 timed out
> [17419.285141] iwlagn 0000:06:00.0: Encounter TX_STATUS_FAIL_PASSIVE_NO_RX, am I on 5.2G band? (0)
> [17419.285315] iwlagn 0000:06:00.0: Encounter TX_STATUS_FAIL_PASSIVE_NO_RX, am I on 5.2G band? (0)
> [17419.286583] wlan0: deauthenticating from 00:24:c4:ab:bd:ef by local choice (reason=2)
> [17419.300296] cfg80211: Calling CRDA for country: JP
> [17419.309278] wlan0: authenticate with 00:24:c4:ab:bd:ef (try 1)
> [17419.310105] wlan0: authenticated
> [17419.317900] wlan0: associate with 00:24:c4:ab:bd:ef (try 1)

It seems a bit like the 5 GHz AP (:e0) just fails, and wpa_supplicant
selects a 2.4 GHz AP (:ef) now? Pure conjecture, I guess the AP could
also be on the same channel -- did you have scan information for these
APs?

johannes

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