From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wi0-f174.google.com ([209.85.212.174]:35809 "EHLO mail-wi0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750720AbaBXFCC (ORCPT ); Mon, 24 Feb 2014 00:02:02 -0500 Received: by mail-wi0-f174.google.com with SMTP id f8so2604158wiw.7 for ; Sun, 23 Feb 2014 21:02:00 -0800 (PST) Message-ID: <530AD245.7090204@gmail.com> (sfid-20140224_060205_929080_2FA553FF) Date: Mon, 24 Feb 2014 07:01:57 +0200 From: Emmanuel Grumbach MIME-Version: 1.0 To: Stephen Kent CC: "Grumbach, Emmanuel" , "linux-wireless@vger.kernel.org" , "ilw@linux.intel.com" Subject: Re: [Ilw] RX laggy/choppy/stuck without TX on Intel Wireless 7260 with iwlwifi References: <0BA3FCBA62E2DC44AF3030971E174FB303D6FFEB@HASMSX103.ger.corp.intel.com> <0BA3FCBA62E2DC44AF3030971E174FB303D7004C@HASMSX103.ger.corp.intel.com> <530A53E5.6000301@gmail.com> <530AC4E3.8030002@gmail.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: On 02/24/2014 06:19 AM, Stephen Kent wrote: > On Sun, Feb 23, 2014 at 8:04 PM, Emmanuel Grumbach wrote: >> >> >>>>> >>>> >>>> Could you please try to reproduce with power save disabled? >>>> >>>> options iwlmvm power_scheme=1 >>>> >>>> Thanks. >>> >>> >>> Huh, interesting. When I set that option the problem seems to go away. >>> I flipped back and forth between power_scheme=1 and power_scheme=2 in >>> iwlmvm (modinfo says 2 is the default), and the problem didn't >>> reproduce when power_scheme=1. I assume my battery life will suffer if >>> I permanently set power_scheme=1? :-) >>> >>> Should I take a new trace or gather any other information? >> >> Not needed >> >>> >>> I won't be my computer all day but I'll be able to respond / collect >>> any needed info intermittently. >>> >> >> I guess the best would be to upgrade to 3.13.5 with new firmware... Or to stay with power_scheme=1 in the meantime. >> >> >>> Thanks, >>> >>> Stephen >>> > > > OK. Was this a bug that was identified and fixed between 3.11 and > 3.13.5? I looked briefly at the kernel git log messages at > https://github.com/torvalds/linux/commits/master/drivers/net/wireless/iwlwifi/mvm > but I am completely unfamiliar with this code. No - I can't think about any patch that could fix your issue. But 3.13 supports a newer firmware in which the power save code has been rewritten. > > Until I upgrade, I'll just set power_scheme=1. > > Thanks again for your help! > > Stephen >