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From:   "Grumbach, Emmanuel" <emmanuel.grumbach@intel.com>
To:     "Stern, Avraham" <avraham.stern@intel.com>,
        Joachim Breitner <mail@joachim-breitner.de>,
        "toke@toke.dk" <toke@toke.dk>
CC:     "Greenman, Gregory" <gregory.greenman@intel.com>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: RE: iwlwifi devices disappear after suspend on kernel 5.17
Thread-Topic: iwlwifi devices disappear after suspend on kernel 5.17
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Date:   Thu, 18 Aug 2022 07:55:48 +0000
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>=20
> Hi Joachim,
>=20
> Do you see the iwd task hang stack trace like in Toke's logs?
> Can you please send full dmesg?
>=20
> Thanks,
> Avi.

FWIW: there is this fix for iwlmei that didn't make it upstream yet:
07f408bb49cc31dccc45c5150e6fbc26a608db10 in our internal tree.
This was meant to avoid the error messages that Toke reported, but
didn't fix the interface remaining down.


>=20
> -----Original Message-----
> From: Joachim Breitner <mail@joachim-breitner.de>
> Sent: Friday, August 12, 2022 19:20
> To: toke@toke.dk
> Cc: Stern, Avraham <avraham.stern@intel.com>; Grumbach, Emmanuel
> <emmanuel.grumbach@intel.com>; Greenman, Gregory
> <gregory.greenman@intel.com>; linux-wireless@vger.kernel.org
> Subject: Re: iwlwifi devices disappear after suspend on kernel 5.17
>=20
> Hello Emmanuel,
>=20
> > suspend. I get errors like these in dmesg:
> >
> > [104393.142264] wlan0: deauthenticating from 4c:60:de:ea:b8:58 by
> > local choice (Reason: 3=3DDEAUTH_LEAVING) [104393.347775] iwlmei
> > 0000:00:16.0-13280904-7792-4fcb-a1aa-5e70cbb1e865: Couldn't get ACK
> > from CSME on HOST_GOES_DOWN message [104393.347876] iwlmei
> > 0000:00:16.0-13280904-7792-4fcb-a1aa-5e70cbb1e865: failed to send the
> > SAP_ME_MSG_CHECK_SHARED_AREA message -19
> >
> > And when the host comes back up, there is no connectivity. Restarting
> > iwd fixes the problem.
>=20
> I am hitting the same problem, on Kernel 5.19, with the same Intel Wi- Fi=
 6
> AX201 device. I reported this initially to iwd, but they said it might be=
 a kernel
> problem, so I found this thread.
>=20
> Has there been a solution since?
>=20
> Thanks,
> Joachim
>=20
>=20
> --
> Joachim Breitner
>   mail@joachim-breitner.de
>   http://www.joachim-breitner.de/