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From: Benjamin Poirier <>
To: Jaroslav Kysela <>
Cc: Takashi Iwai <>, Kailang Yang <>,,
Subject: Re: [PATCH 2/2] ALSA: hda/realtek - Fix Lenovo Thinkpad X1 Carbon 7th quirk value
Date: Tue, 11 Feb 2020 17:16:04 +0900	[thread overview]
Message-ID: <20200211081604.GA8286@f3> (raw)
In-Reply-To: <>

On 2020/02/11 08:40 +0100, Jaroslav Kysela wrote:
> > 
> > In summary, Node 0x17 DAC connection 0x3 offers the loudest max volume and
> > the most detailed mixer controls. That connection is obtained with quirk
> > ALC295_FIXUP_DISABLE_DAC3. Therefore, change the ThinkPad X1 Carbon 7th to
> The volume split (individual volume control) will cause trouble for the UCM
> volume control at the moment which is the target for this device to get the
> digital microphone working. If there is no possibility to share DAC, it
> would be probably more nice to join the volume control in the driver.
> Have you tried to use 0x03 as source for all four speakers?

Front speakers are fixed to 0x02. Node 0x14
  Connection: 1

> Why PA handles the rear volume control with the current driver code in the
> legacy ALSA driver? It should be handled like standard stereo device. I'll
> check.

The device comes up with "Analog Stereo Output" profile by default. I
changed it to "Analog Surround 4.0 Output" to test controlling each
channel individually:

> > pavucontrol controls are reported with the device configured with the
> > "Analog Surround 4.0 Output" profile.

> You should also test PA with UCM.

Please let me know what do I need to test exactly? I'm not familiar with

  reply	other threads:[~2020-02-11  8:16 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-11  5:56 [PATCH 1/2] ALSA: hda/realtek - Fix Lenovo Thinkpad X1 Carbon 7th quirk subdevice id Benjamin Poirier
2020-02-11  5:56 ` [PATCH 2/2] ALSA: hda/realtek - Fix Lenovo Thinkpad X1 Carbon 7th quirk value Benjamin Poirier
2020-02-11  7:40   ` Jaroslav Kysela
2020-02-11  8:16     ` Benjamin Poirier [this message]
2020-02-11  9:10       ` Kailang
2020-02-11  9:20         ` Takashi Iwai
2020-02-11  9:57           ` Kailang
2020-02-12  6:32           ` Kailang
2020-02-11  9:35       ` Jaroslav Kysela
2020-02-11 11:42         ` Benjamin Poirier
2020-02-11 13:56           ` Jaroslav Kysela

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