linux-kernel - Re: Intel Comet Lake Wifi (8086:02f0) only working after cold start, failed with error -110

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Message-ID: <Z2VBv7Um0cf9dwvw@torres.zugschlus.de>
Date: Fri, 20 Dec 2024 11:06:55 +0100
From: Marc Haber <mh+linux-kernel@...schlus.de>
To: Sedat Dilek <sedat.dilek@...il.com>
Cc: linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
	Miri Korenblit <miriam.rachel.korenblit@...el.com>,
	Johannes Berg <johannes@...solutions.net>
Subject: Re: Intel Comet Lake Wifi (8086:02f0) only working after cold start,
 failed with error -110

On Fri, Dec 20, 2024 at 08:09:48AM +0100, Marc Haber wrote:
> On Thu, Dec 19, 2024 at 04:34:03PM +0100, Sedat Dilek wrote:
> > I enhanced the CC list.
> 
> That would have been my next escalation. Thanks for doing it quicker.
> 
> > Checked for newer firmware?
> 
> Debian Unstable has firmware-iwlwifi dated 20240909.
> 
> And, in the "bad" case, the syslog doesn't look like something is even
> trying to download firmware.

I updated my Debian unstable from last week's version, it now has kernel
6.12.5 and firmware-iwlwifi-20241210_all.deb. Behavior unchanged.

I then downloaded linux-firmware-iwlwifi-fw-2024-11-28.tar.gz and copied
its contents over /lib/firmware. Behaviod unchanged.

In the bad case, grepping dmesg for firmware yields firmware being
loadded for psmouse, Bluetooth, elan_i2c, and sof-audio-pci-intel-cnl,
but not for iwlwifi.

In the good case, it additionally logs failure to load
iwl-debug-yoyo.bin (-2) and then proceeds to successfully load firmware
version 77.0b4c06ad.0 QuZ-a0-hr-b0-77.ucode op_mode iwlmvm.

Greetings
Marc

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