linux-kernel - [regression] Mute button LED stopped working on Lenovo X1 Extreme

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Message-ID: <CAMRc=MdGYG55s2=Z6pCA90TbUVLgfhE3hohsCnm5QDGy1NEg=A@mail.gmail.com>
Date:   Fri, 14 Dec 2018 18:20:10 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Takashi Iwai <tiwai@...e.de>,
        Hui Wang <hui.wang@...onical.com>,
        Kailang Yang <kailang@...ltek.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>
Subject: [regression] Mute button LED stopped working on Lenovo X1 Extreme

Hi,

I'm not sure what the connection is exactly but commit dcd51305cd41
("ALSA: hda/realtek - fix the pop noise on headphone for lenovo
laptops") broke the mute button LED on my Lenovo X1 Extreme laptop.

I don't have any more info frankly and don't even know where to start
debugging. Other LEDs work fine. This mute button LED never had any
entry in /sys/class/leds, I'm not sure how it's handled.

Let me know if you need more debugging on my part.

Best regards,
Bartosz Golaszewski