linux-kernel - Re: [PATCH 1/4] ALSA: hda/realtek: fix mute/micmute LEDs for HP 855 G8

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Date:   Wed, 12 Jan 2022 13:48:27 +0300
From:   Alexander Sergeyev <sergeev917@...il.com>
To:     Takashi Iwai <tiwai@...e.de>
Cc:     Jeremy Szu <jeremy.szu@...onical.com>, tiwai@...e.com,
        "moderated list:SOUND" <alsa-devel@...a-project.org>,
        Kailang Yang <kailang@...ltek.com>,
        open list <linux-kernel@...r.kernel.org>,
        Huacai Chen <chenhuacai@...nel.org>,
        Jian-Hong Pan <jhp@...lessos.org>,
        Hui Wang <hui.wang@...onical.com>,
        PeiSen Hou <pshou@...ltek.com>
Subject: Re: [PATCH 1/4] ALSA: hda/realtek: fix mute/micmute LEDs for HP 855
 G8

On Wed, Jan 12, 2022 at 11:13:44AM +0100, Takashi Iwai wrote:
>Sounds like some timing issue, then. It's pretty hard to debug, unfortunately.

I can imagine. Is it possible that initcall_debug logs could help? Or is it 
timing issues within the same module?

>You may try to get the codec proc dump with COEF by passing 
>snd_hda_codec.dump_coef=1 module option for both working and non-working 
>cases.
>You can unbind and re-bind the PCI (HD-audio controller) device via sysfs.

I'll try both options later today when able, thank you!