[Bug 1805079] Re: click/pop noise in the headphone on several lenovo laptops

2019-01-04 Thread James Thorne 
I think the poster here [1] and here [2] are the same person. That
person mentions in the Lenovo thread [2] that the "sudo hda-verb
/dev/snd/hwC0D0 0x1d SET_PIN_WIDGET_CONTROL 0x0" command is  temporary,
and to permanently apply it the method mentioned in the same Lenovo
thread needs to be done.

Knowing that either of those methods appear to be the fix, what is
necessary to resolve this permanently and not require the method
mentioned here [2]?

Additionally, for my own curiosity, what exactly is happening when
applying either of the fixes?

Thanks.

[1]
https://www.reddit.com/r/thinkpad/comments/8j8208/audio_crackling_through_both_headphone_jack_and/

[2] https://forums.lenovo.com/t5/Linux-Discussion/X1-Carbon-Gen-6-weird-
audio-behaviour/m-p/4172468/highlight/true#M11520

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Title:
  click/pop noise in the headphone on several lenovo laptops

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[Bug 1805079] Re: click/pop noise in the headphone on several lenovo laptops

2019-01-02 Thread James Thorne 
I am using an X1 Carbon Gen 6 (BIOS 1.31) with Ubuntu 18.04.1 LTS, and I
too experience the popping sounds in the left-channel of my headphones
(this does not occur when connecting the same headphones with a 3.5mm-
to-USB-C adapter to the second USB-C port).

Other than that issue, audio through the headphones sounds great and can
get very loud (I typically cannot go above 58%), but audio through the
speakers can get tinny/distorted and is quiet at 100%. I believe this is
a known issue with the X1 Carbon's speakers and is probably unrelated to
the issue at hand, but I thought it is worth mentioning since there is
discussion in this thread about using the speaker's DAC for the
headphones instead of the headphone's DAC.

I applied the changes mentioned here [1], and the popping sounds in the
left-channel of my headphones appear to have stopped. I have been using
this video [2] to test before and after the changes due to its wide
range of audio and vocals (quiet, normal, and loud moments).


alsa-info: 
http://www.alsa-project.org/db/?f=d961cfbf429bc18b38ce8d1cf8e931482ba4a627

[1] https://forums.lenovo.com/t5/Linux-Discussion/X1-Carbon-Gen-6-weird-
audio-behaviour/m-p/4172468/highlight/true#M11520

[2] https://youtu.be/f2kesmAO8VU

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Title:
  click/pop noise in the headphone on several lenovo laptops

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