There is a fix for this issue.
commit d2cd795c4ece1a24fda170c35eeb4f17d9826cbb
Author: Jaroslav Kysela <[email protected]>
Date: Fri Nov 29 15:40:27 2019 +0100
ALSA: hda - fixup for the bass speaker on Lenovo Carbon X1 7th gen
The auto-parser assigns the bass speaker to DAC3 (NID 0x06) which
is without the volume control. I do not see a reason to use DAC2,
because the shared output to all speakers produces the sufficient
and well balanced sound. The stereo support is enough for this
purpose (laptop).
Signed-off-by: Jaroslav Kysela <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
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https://bugs.launchpad.net/bugs/1853440
Title:
Volume either 0 or 100% on Lenovo X1 Carbon G7
Status in gnome-shell package in Ubuntu:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
Volume increasing or decreasing doesn't work.
I can only toggle sound on (= 100%) and off (= 0%).
What I found out is that the Master channel seems to have no effect
for volume adjustments, but the PCM channel does. If the sound is
muted, PCM is set to 0 and therefore the sound is toggled off, but
when I increase the sound a bit, PCM jumps straight to 100, causing
the speakers to be very load.
I have attached alsa-info output.
System environment:
Pop!_OS 19.10
Release: 19.10
Alsa-Version:
alsa-base: 1.0.25
Sound Card:
HDA-Intel
Codec: Realtek ALC285
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
CurrentDesktop: pop:GNOME
DisplayManager: gdm3
DistroRelease: Pop!_OS 19.10
Package: linux
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu
5.3.0-22.24+system76~1573659475~19.10~26b2022-generic 5.3.7
RelatedPackageVersions: mutter-common
3.34.1+git20191107-1ubuntu1~19.10.1pop0~1573683812~19.10~50e928a
Tags: third-party-packages eoan
Uname: Linux 5.3.0-22-generic x86_64
UnreportableReason: This is not an official Pop!_OS package. Please remove
any third party package and try again.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm sudo
_MarkForUpload: True
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