Subject: Re: kernel 4.9 iwlwifi startup error
To: Fabio Coatti <fabio.coatti@gmail.com>,
        LKML <linux-kernel@vger.kernel.org>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
References: <2029482.jt8IarKZJs@calvin>
From: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Date: Tue, 3 Jan 2017 13:42:05 +1100
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In-Reply-To: <2029482.jt8IarKZJs@calvin>
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Message-Id: <942b4775-6027-2b99-84c7-37b7cde124b9@au1.ibm.com> (sfid-20170103_034227_592959_0B28F147)
Sender: linux-wireless-owner@vger.kernel.org

On 02/01/17 21:12, Fabio Coatti wrote:
> Hi all,
> I'm using kernel 4.9 and maybe half of the times I boot my laptop I get the
> error reported below, and the wifi does not work. I have to remove iwlwifi (like
> modprobe -r iwldvm iwlwifi) and insert it again to get things workig again.
> This seems a bit random, it does not happens all the times so it could be a
> timing issue or even a flaky hardware (unlikely, as I see only this issue with
> wifi, once it starts it works just fine)
> I'm pretty sure to have seen the same behaviour at some point in 4.8.X
> release, but right now I lost the related notes.
> Environment:
> Distro: gentoo
> gcc 5.4.0
> HW: Hewlett-Packard HP EliteBook Folio 9470m/18DF, BIOS 68IBD Ver. F.63
> 04/26/2016
> Intel(R) Core(TM) i5-3427U CPU @ 1.80GHz
> Network controller: Intel Corporation Centrino Advanced-N 6235 (rev 24)
>
> Of course if more info is needed, just drop me a note.
>
> I'm not subscribed to mailing lists, so please keep me in CC: for any
> information request.
>
> Many thanks.

I've so far seen this once on my laptop, a Samsung NP540U3C (don't have 
it with me right now, so I'm not sure what the wifi chipset is), running 
with a Debian 4.9 kernel.

-- 
Andrew Donnellan              OzLabs, ADL Canberra
andrew.donnellan@au1.ibm.com  IBM Australia Limited