Bug 209595 - Lenovo P50 headphones no sound after boot
Summary: Lenovo P50 headphones no sound after boot
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: Sound(ALSA) (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: Jaroslav Kysela
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-10-09 09:31 UTC by Fabio Coatti
Modified: 2020-10-09 09:31 UTC (History)
0 users

See Also:
Kernel Version: 5.8.14
Subsystem:
Regression: No
Bisected commit-id:

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Description Fabio Coatti 2020-10-09 09:31:46 UTC 
I'm experiencing issues with a Lenovo P50 regarding headphones. It has
some similarities with the issue fixed in 5.8.13 with
commit ad0643252831ede7d6ab7b70a4f03768e032e6b4
Author: Hui Wang <hui.wang@canonical.com>
Date:   Mon Sep 14 14:51:18 2020 +0800

    ALSA: hda/realtek - Couldn't detect Mic if booting with headset plugged

I've been seeing this behavior since some time and now I'm running 5.8.14 Description: sometimes when I start the laptop with headphones plugged
in, no sound comes out of the headphones. The only thing I can hear is
the "usual" click when the kernel boots. Before rebooting all was fine also with heaphones. Sound config in the gui reports headphones plugged, nothing seems really wrong but no sound.
Removing headphones does not help: sound can be heard from laptop
loudspeakers but  to get back the sound on headphones I have to unplug
the jack, reboot the laptop and once booted, inserting the headphones
makes everything work as  expected. Gui tools report everything as
expected: headphones inserted, volume is ok and so on.
Below you can find the dmesg boot messages related to sound devices.
If you need more details please let me know.
[Fri Oct  9 08:20:05 2020] snd_hda_codec_realtek hdaudioC0D0:
autoconfig for ALC298: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
[Fri Oct  9 08:20:05 2020] snd_hda_codec_realtek hdaudioC0D0:
speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[Fri Oct  9 08:20:05 2020] snd_hda_codec_realtek hdaudioC0D0:
hp_outs=2 (0x17/0x21/0x0/0x0/0x0)
[Fri Oct  9 08:20:05 2020] snd_hda_codec_realtek hdaudioC0D0:    mono:
mono_out=0x0
[Fri Oct  9 08:20:05 2020] snd_hda_codec_realtek hdaudioC0D0:    inputs:
[Fri Oct  9 08:20:05 2020] snd_hda_codec_realtek hdaudioC0D0:      Mic=0x18
[Fri Oct  9 08:20:05 2020] snd_hda_codec_realtek hdaudioC0D0:      Dock Mic=0x19
[Fri Oct  9 08:20:05 2020] snd_hda_codec_realtek hdaudioC0D0:
Internal Mic=0x12
[Fri Oct  9 08:20:05 2020] videodev: Linux video capture interface: v2.00
[Fri Oct  9 08:20:05 2020] input: HDA NVidia HDMI/DP,pcm=3 as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input15
[Fri Oct  9 08:20:05 2020] input: HDA NVidia HDMI/DP,pcm=7 as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input16
[Fri Oct  9 08:20:05 2020] input: HDA NVidia HDMI/DP,pcm=8 as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input17
[Fri Oct  9 08:20:05 2020] input: HDA NVidia HDMI/DP,pcm=9 as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input18
[Fri Oct  9 08:20:05 2020] input: HDA NVidia HDMI/DP,pcm=10 as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input19
[Fri Oct  9 08:20:05 2020] input: HDA NVidia HDMI/DP,pcm=11 as
/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input20
[Fri Oct  9 08:20:05 2020] input: HDA Intel PCH Mic as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input22
[Fri Oct  9 08:20:05 2020] input: HDA Intel PCH Dock Mic as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input23
[Fri Oct  9 08:20:05 2020] input: HDA Intel PCH Dock Headphone as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input24
[Fri Oct  9 08:20:05 2020] input: HDA Intel PCH Headphone as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input25
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