Lenovo ThinkPad T420s no sound in Dock

[otas.pe]

Hello

I would like to ask you for your help. I have laptop Lenovo ThinkPad T420s and Lenovo ThinkPad Mini Dock Series 3 4337. There is no sound during docking. Out of dock there is no problem, sound works. In dock there is no sound from integrated speakers nor external as well.

Sound card:

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00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)

System:
Debian Stretch 64bit Gnome

If you have any idea please let me know.

Thank you in advance.

Otas

[arochester]

Do you Boot with the Dock attached?

Or do you Boot and then attach the Dock?

[otas.pe]

Dock was attached during boot.

[arochester]

On my (old) Thinkpad I can connect the dock and the sound buttons on the computer still work - Volume Up, Volume Down and Mute - but the sound comes through the dock.

[otas.pe]

Not the same here on my HW. Any idea?

[otas.pe]

Nobody knows how to help to pulseaudio to work sound through dock?

[Head_on_a_Stick]

Please post the output of:

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pacmd list-sinks

Run this command with the laptop docked and also with it un-docked so that we can compare the two.

[otas.pe]

Notebook docked

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ota@debian-laptop-t420s:~$ pacmd list-sinks
1 sink(s) available.
  * index: 0
	name: <alsa_output.pci-0000_00_1b.0.analog-stereo>
	driver: <module-alsa-card.c>
	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY FLAT_VOLUME DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: IDLE 
	priority: 9959
	volume: front-left: 65536 / 100% / 0,00 dB,   front-right: 65536 / 100% / 0,00 dB
	        balance 0,00
	base volume: 65536 / 100% / 0,00 dB
	volume steps: 65537
	muted: no
	current latency: 0,00 ms
	max request: 0 KiB
	max rewind: 0 KiB
	monitor source: 0
	sample spec: s16le 2ch 48000Hz
	channel map: front-left,front-right
	             Stereo
	used by: 0
	linked by: 1
	configured latency: 0,00 ms; range is 0,50 .. 341,33 ms
	card: 0 <alsa_card.pci-0000_00_1b.0>
	module: 6
	properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "CX20590 Analog"
		alsa.id = "CX20590 Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xf2a20000 irq 33"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1b.0"
		sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "1c20"
		device.product.name = "6 Series/C200 Series Chipset Family High Definition Audio Controller"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "65536"
		device.buffering.fragment_size = "32768"
		device.access_mode = "mmap+timer"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analogové stereo"
		device.description = "Vnitřní zvukový systém Analogové stereo"
		alsa.mixer_name = "Conexant CX20590"
		alsa.components = "HDA:14f1506e,17aa21d2,00100003"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-speakers"
		analog-output-headphones: Analogová sluchátka (priority 9000, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-headphones"
	active port: <analog-output-headphones>

Notebook undocked

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ota@debian-laptop-t420s:~$ pacmd list-sinks
1 sink(s) available.
  * index: 0
	name: <alsa_output.pci-0000_00_1b.0.analog-stereo>
	driver: <module-alsa-card.c>
	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY FLAT_VOLUME DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: IDLE 
	priority: 9959
	volume: front-left: 65536 / 100% / 0,00 dB,   front-right: 65536 / 100% / 0,00 dB
	        balance 0,00
	base volume: 65536 / 100% / 0,00 dB
	volume steps: 65537
	muted: no
	current latency: 0,00 ms
	max request: 0 KiB
	max rewind: 0 KiB
	monitor source: 0
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 0
	linked by: 1
	configured latency: 0,00 ms; range is 0,50 .. 371,52 ms
	card: 0 <alsa_card.pci-0000_00_1b.0>
	module: 6
	properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "CX20590 Analog"
		alsa.id = "CX20590 Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xf2a20000 irq 33"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1b.0"
		sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "1c20"
		device.product.name = "6 Series/C200 Series Chipset Family High Definition Audio Controller"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "65536"
		device.buffering.fragment_size = "32768"
		device.access_mode = "mmap+timer"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analogové stereo"
		device.description = "Vnitřní zvukový systém Analogové stereo"
		alsa.mixer_name = "Conexant CX20590"
		alsa.components = "HDA:14f1506e,17aa21d2,00100003"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-speakers"
		analog-output-headphones: Analogová sluchátka (priority 9000, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-headphones"
	active port: <analog-output-headphones>

Thank you in advance for answer.

[bw123]

not much to go on...

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$ diff undk dk 
19c19
<        sample spec: s16le 2ch 44100Hz
---
>        sample spec: s16le 2ch 48000Hz
24c24
<        configured latency: 0,00 ms; range is 0,50 .. 371,52 ms
---
>        configured latency: 0,00 ms; range is 0,50 .. 341,33 ms

[otas.pe]

Thanks but there is no advice.