Return-path: Received: from mail-la0-f46.google.com ([209.85.215.46]:36547 "EHLO mail-la0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751725AbbGRTH1 convert rfc822-to-8bit (ORCPT ); Sat, 18 Jul 2015 15:07:27 -0400 MIME-Version: 1.0 In-Reply-To: <55A90BF4.6040402@gmx.de> References: <55A43355.2070302@gmx.de> <55A90BF4.6040402@gmx.de> Date: Sat, 18 Jul 2015 22:07:24 +0300 Message-ID: (sfid-20150718_210749_197949_A1660CCF) Subject: Re: iwlwifi: Microcode SW error detected. Restarting 0x2000000. From: Emmanuel Grumbach To: =?UTF-8?Q?Toralf_F=C3=B6rster?= Cc: linux-wireless , Linux Kernel Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: Emmanuel Grumbach egrumbach@gmail.com On Fri, Jul 17, 2015 at 5:06 PM, Toralf Förster wrote: > On 07/14/2015 08:43 AM, Emmanuel Grumbach wrote: >> You are not using the latest firmware. Please upgrade to 25.17.12.0. > > At least with this firmware the issue is self-healing after a short while - I do not need to restart the interface. > Thanks for the feedback. > FWIW it worked flawlessly since Dec last year so far - no software upgrade at the fritz box nor any hardware change. > So the current kernel uncovered then an (existing hidden ?) issue, right ? The current kernel might just be loading a newer firmware that has a regression. It may very well be a regression in iwlwifi (kernel or firmware). What you can try is to use an older firmware. kernel 4.0 can still load -9.ucode and up. So you can just try to downgrade the firmware. Please use: ethtool -i wlan0 to check the version of the firmware. Don't rely on the information in modinfo.