Return-path: Received: from mail-la0-f44.google.com ([209.85.215.44]:58630 "EHLO mail-la0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756076Ab3CaBtb (ORCPT ); Sat, 30 Mar 2013 21:49:31 -0400 Received: by mail-la0-f44.google.com with SMTP id eb20so1341581lab.3 for ; Sat, 30 Mar 2013 18:49:29 -0700 (PDT) MIME-Version: 1.0 From: Andrew Lutomirski Date: Sat, 30 Mar 2013 18:49:08 -0700 Message-ID: (sfid-20130331_034950_361359_E9636B0A) Subject: Mysterious (?) VHT/HT warning on 3.8.2 To: linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: When my system (using an Intel 6300) associates to the AP here, it says: wlan0: authenticate with [MAC] wlan0: capabilities/regulatory prevented using AP HT/VHT configuration, downgraded Despite this warning, HT seems to work. I'm getting >7 MB/s over ssh, which isn't terrible. $ sudo iw wlan0 link Connected to [MAC] (on wlan0) SSID: [omitted] freq: 2432 RX: 421276864 bytes (301704 packets) TX: 5148186 bytes (46101 packets) signal: -47 dBm tx bitrate: 270.0 MBit/s MCS 14 40Mhz short GI bss flags: short-preamble short-slot-time dtim period: 2 beacon int: 100 That's a nice high MCS rate at 40MHz. $ sudo iw dev wlan0 scan dump BSS [MAC] (on wlan0) -- associated TSF: 126363129751 usec (1d, 11:06:03) freq: 2432 beacon interval: 100 capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431) signal: -39.00 dBm last seen: 30251 ms ago Information elements from Probe Response frame: SSID: [omitted] Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 DS Parameter set: channel 5 RSN: * Version: 1 * Group cipher: CCMP * Pairwise ciphers: CCMP * Authentication suites: PSK * Capabilities: (0x0000) ERP: Extended supported rates: 24.0 36.0 48.0 54.0 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: CW 3-7, AIFSN 2, TXOP 1504 usec HT capabilities: Capabilities: 0x11ce HT20/HT40 SM Power Save disabled RX HT40 SGI TX STBC RX STBC 1-stream Max AMSDU length: 3839 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: 5 * secondary channel offset: below * STA channel width: any * RIFS: 0 * HT protection: non-HT mixed * non-GF present: 0 * OBSS non-GF present: 1 * dual beacon: 0 * dual CTS protection: 0 * STBC beacon: 0 * L-SIG TXOP Prot: 0 * PCO active: 0 * PCO phase: 0 WPS: * Version: 1.0 * Wi-Fi Protected Setup State: 2 (Configured) * AP setup locked: 0x01 * Response Type: 3 (AP) * UUID: 00000000-0000-1000-0000-74440171ae50 * Manufacturer: Netgear * Model: WNDR3800 * Model Number: V1 * Serial Number: none * Primary Device Type: 6-0050f204-1 * Device name: WNDR3800(Wireless AP) * Config methods: Ethernet, Label, PBC * RF Bands: 0x3 What's happening here?