Return-path: Received: from an-out-0708.google.com ([209.85.132.243]:6637 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757515AbYFONnE (ORCPT ); Sun, 15 Jun 2008 09:43:04 -0400 Received: by an-out-0708.google.com with SMTP id d40so1113175and.103 for ; Sun, 15 Jun 2008 06:43:03 -0700 (PDT) Message-ID: <48551C62.80904@gmail.com> (sfid-20080615_154308_603929_3A10181B) Date: Sun, 15 Jun 2008 16:42:58 +0300 From: Maxim Levitsky MIME-Version: 1.0 To: Tomas Winkler CC: =?ISO-8859-1?Q?Tor_H=E5kon_Haugen?= , Zhu Yi , linux-wireless@vger.kernel.org, ipw3945-devel@lists.sourceforge.net Subject: Re: [ipw3945-devel] [BUG] iwlwifi 3945 works only with disable_hw_scan=1 References: <484FEA26.1040305@gmail.com> <1213241315.7814.696.camel@debian.sh.intel.com> <20080612135936.GA5031@tuxdriver.com> <1213342523.7814.865.camel@debian.sh.intel.com> <20080613130310.GA5333@tuxdriver.com> <48528B63.5030403@gmail.com> <48528CF0.8050204@gmail.com> <1ba2fa240806131304n442972eatfd2f35034476c380@mail.gmail.com> In-Reply-To: <1ba2fa240806131304n442972eatfd2f35034476c380@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: Tomas Winkler wrote: > On Fri, Jun 13, 2008 at 6:06 PM, Maxim Levitsky wrote: >> Tor H=E5kon Haugen wrote: >>> John W. Linville wrote: >>>> On Fri, Jun 13, 2008 at 03:35:23PM +0800, Zhu Yi wrote: >>>>> On Thu, 2008-06-12 at 09:59 -0400, John W. Linville wrote: >>>>>> Honestly I'm tempted to change it to "enable_hw_scan" instead... >>>>> Give the advantages, I'd like to use it if we can fix the bug (I = haven't >>>>> seen what the bug is myself). But you are free to change the defa= ult >>>>> value until it is fixed. There is no such problem for 4965, right= ? >>>> AFAICT only the 3945 seems to need it. >>>> >>> I can confirm that this also applies to 4965 as a friend of mine ha= s >>> this card. According to him the card works a lot better with the >>> parameters "swcrypto=3D1" and "disable_hw_scan=3D1". >> Just to make it clear, >> iwl3945 doesn't work at all without disable_hw_scan=3D1 here. >> The driver just shuts down thee card since it detects microcode erro= r. >> >=20 > It looks like this is all caused by the big rate, band patch. Looks > like A band scan channels are not configured correctly for the > scanning. This crashes the firmware. >=20 > Tomas Probably, I see that eeprom according to dmesg contains no info about A channels, so maybe this crashes the firmware. I have few questions: * Is there a software workaround without the need to update the firmwar= e? * Is the firmware error so harmful, so driver can't continue? * Can I expect updated version of the firmware with fix? Sadly this confirms that firmware is worse that I thought, it is closer= =20 to closed drivers. (Although intel isn't guilty in this case due to regulations.) Best regards, Maxim Levitsky -- To unsubscribe from this list: send the line "unsubscribe linux-wireles= s" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html