Alsa-info patched kernel:
http://www.alsa-project.org/db/?f=cd23a3f0bb72e38d73224620e3e8ab57a73aa441
Node 0x1a [Pin Complex] wcaps 0x40058f: Stereo Amp-In Amp-Out Control: name="Bass Speaker Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Speaker Surround Jack", index=0, device=0 Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x80 0x80] Pincap 0x0000373c: IN OUT HP Detect Vref caps: HIZ 50 GRD 80 100 Pin Default 0x411111f0: [N/A] Speaker at Ext Rear Conn = 1/8, Color = Black DefAssociation = 0xf, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x00: VREF_HIZ Unsolicited: tag=05, enabled=1 Power states: D0 D1 D2 D3 EPSS Power: setting=D0, actual=D0 Connection: 3 0x0c 0x0d* 0x0e
"Speaker Surround Jack" should return true when you plugged the external subwoofer as you didn't change the name of the jack detect kctl
Chmap results:
Type = FIXED, Channels = 2 FL FR Type = FIXED, Channels = 4 FL FR NA LFE
When unplugging the subwoofer, then chmap gives this and stays like this.
Cannot open PCM stream hw:1 for PLAYBACK
[Pavucontrol] -> [Configuration] -> [Built-in Audio] gives
Analog Stereo Duplex Analog Stereo Output Analog Surround 2.1 Output + Analog Stereo Input Analog Surround 2.1 Output Analog Surround 4.0 Output + Analog Stereo Input Analog Surround 4.0 Output Analog Stereo Input Off
Pulseaudio verbose log while plugging in the subwoofer:
Seem not probe surround21 profile