Same issue here on X1 Yoga 4th gen. Seems alsa sees a bass speaker, but
it's stuck at zero and cannot be turned on or otherwise regulated.
Node 0x17 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
Control: name="Bass Speaker Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x00 0x00]
Pincap 0x0000001c: OUT HP Detect
Pin Default 0x90170111: [Fixed] Speaker at Int N/A
Conn = Analog, Color = Unknown
DefAssociation = 0x1, Sequence = 0x1
Misc = NO_PRESENCE
Pin-ctls: 0x40: OUT
Unsolicited: tag=00, enabled=0
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 3
0x02* 0x03 0x06
In-driver Connection: 1
0x02
Full alsa info http://alsa-
project.org/db/?f=aab3665eede4913070f67e7d8b1b57d17db2633c
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https://bugs.launchpad.net/bugs/1872108
Title:
Bass not on working Lenovo ThinkPad X1 Carbon 7th gen running focal
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