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Message-ID: <20111021012354.GA26758@gamma.logic.tuwien.ac.at>
Date: Fri, 21 Oct 2011 10:23:54 +0900
From: Norbert Preining <preining@...ic.at>
To: Johannes Berg <johannes@...solutions.net>
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 Do, 20 Okt 2011, Johannes Berg wrote:
> > [17409.616748] wlan0: direct probe to 00:24:c4:ab:bd:e0 (try 1/3)
..
> > [17419.285141] 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?
BSS 00:24:c4:ab:bd:e0 (on wlan0)
TSF: 8728607601135 usec (101d, 00:36:47)
freq: 2412
beacon interval: 102
capability: ESS ShortPreamble ShortSlotTime (0x0421)
signal: -62.00 dBm
last seen: 6012 ms ago
SSID: XXXXXX
Supported rates: 1.0* 2.0* 5.5* 6.0 9.0 11.0* 12.0 18.0
DS Parameter set: channel 1
TIM: DTIM Count 0 DTIM Period 1 Bitmap Control 0x0 Bitmap[0] 0x0
Country: JP Environment: Indoor/Outdoor
Channels [1 - 13] @ 20 dBm
ERP: Use_Protection
HT capabilities:
Capabilities: 0x182c
HT20
SM Power Save disabled
RX HT20 SGI
No RX STBC
Max AMSDU length: 7935 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 8 usec (0x06)
HT RX MCS rate indexes supported: 0-15
HT TX MCS rate indexes are undefined
Extended supported rates: 24.0 36.0 48.0 54.0
HT operation:
* primary channel: 1
* secondary channel offset: no secondary
* STA channel width: 20 MHz
* RIFS: 0
* HT protection: non-HT mixed
* non-GF present: 1
* OBSS non-GF present: 0
* dual beacon: 0
* dual CTS protection: 0
* STBC beacon: 0
* L-SIG TXOP Prot: 0
* PCO active: 0
* PCO phase: 0
WMM: * Parameter version 1
* u-APSD
* BE: CW 15-1023, AIFSN 3
* BK: CW 15-1023, AIFSN 7
* VI: CW 7-15, AIFSN 2, TXOP 3008 usec
* VO: acm CW 3-7, AIFSN 2, TXOP 1504 usec
And the one I am on:
BSS 00:24:c4:ab:bd:ef (on wlan0) -- associated
TSF: 8728558719143 usec (101d, 00:35:58)
freq: 5200
beacon interval: 102
capability: ESS (0x0001)
signal: -69.00 dBm
last seen: 96 ms ago
Information elements from Probe Response frame:
SSID: XXXXXX
Supported rates: 6.0* 9.0 12.0* 18.0 24.0* 36.0 48.0 54.0
Country: JP Environment: Indoor/Outdoor
Channels [36 - 64] @ 22 dBm
HT capabilities:
Capabilities: 0x186e
HT20/HT40
SM Power Save disabled
RX HT20 SGI
RX HT40 SGI
No RX STBC
Max AMSDU length: 7935 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 8 usec (0x06)
HT RX MCS rate indexes supported: 0-15
HT TX MCS rate indexes are undefined
HT operation:
* primary channel: 40
* secondary channel offset: below
* STA channel width: any
* RIFS: 1
* HT protection: no
* non-GF present: 1
* OBSS non-GF present: 0
* dual beacon: 0
* dual CTS protection: 0
* STBC beacon: 0
* L-SIG TXOP Prot: 0
* PCO active: 0
* PCO phase: 0
WMM: * Parameter version 1
* u-APSD
* BE: CW 15-1023, AIFSN 3
* BK: CW 15-1023, AIFSN 7
* VI: CW 7-15, AIFSN 2, TXOP 3008 usec
* VO: acm CW 3-7, AIFSN 2, TXOP 1504 usec
No idea if that helps you.
Best wishes
Norbert
------------------------------------------------------------------------
Norbert Preining preining@...ist.ac.jp, logic.at, debian.org}
JAIST, Japan TeX Live & Debian Developer
DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
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