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jward92

Member

Registered: 2015-07-18

Posts: 2

No Audio on Skylake Thinkpad Sentry Laptop - Dummy Output only device

This is a Thinkpad Sentry Chromebook, it has an Intel 6100U Skylake CPU and the audio is not working. I have heard of other Skylake machines having audio problems but all the posts are many years old. I am running mainline kernel 5.8.5. GalliumOS seems to have figured this issue out and it works fine, but I really don't like the distro and I don;t even think it's developed any more. I am not sure what troubleshooting steps to take or what outputs I could post that might be helpful, any help would be greatly appreciated.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,231

Re: No Audio on Skylake Thinkpad Sentry Laptop - Dummy Output only device

Install sof-firmware and alsa-ucm-conf and reboot and retry. If that is insufficient post more details about how the detection happens, like

aplay -lL
dmesg | grep 'snd|sof|soc'
pacmd list-cards
pacmd list-sinks

Last edited by V1del (2020-09-02 07:26:07)

jward92

Member

Registered: 2015-07-18

Posts: 2

Re: No Audio on Skylake Thinkpad Sentry Laptop - Dummy Output only device

Thanks V1del, unfortunately those packages didn't fix the issue after a reboot but here's the outputs you mentioned:

[justin@Justin-Laptop ~]$ aplay -lL
null
    Discard all samples (playback) or generate zero samples (capture)
samplerate
    Rate Converter Plugin Using Samplerate Library
speexrate
    Rate Converter Plugin Using Speex Resampler
jack
    JACK Audio Connection Kit
oss
    Open Sound System
pipewire
    PipeWire Sound Server
pulse
    PulseAudio Sound Server
speex
    Plugin using Speex DSP (resample, agc, denoise, echo, dereverb)
upmix
    Plugin for channel upmix (4,6,8)
vdownmix
    Plugin for channel downmix (stereo) with a simple spacialization
default
    Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=sklnau8825max
    sklnau8825max, 
    Default Audio Device
usbstream:CARD=sklnau8825max
    sklnau8825max
    USB Stream Output
**** List of PLAYBACK Hardware Devices ****
card 0: sklnau8825max [sklnau8825max], device 0: Audio (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sklnau8825max [sklnau8825max], device 4: Hdmi1 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sklnau8825max [sklnau8825max], device 5: Hdmi2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sklnau8825max [sklnau8825max], device 6: Hdmi3 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

dmesg | grep 'snd|sof|soc

doesn't appear to output anything

[justin@Justin-Laptop ~]$ pacmd list-cards
0 card(s) available.

[justin@Justin-Laptop ~]$ pacmd list-sinks
1 sink(s) available.
  * index: 0
	name: <auto_null>
	driver: <module-null-sink.c>
	flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: IDLE
	priority: 1000
	volume: front-left: 41944 /  64% / -11.63 dB,   front-right: 41944 /  64% / -11.63 dB
	        balance 0.00
	base volume: 65536 / 100% / 0.00 dB
	volume steps: 65537
	muted: no
	current latency: 0.00 ms
	max request: 344 KiB
	max rewind: 344 KiB
	monitor source: 0
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 0
	linked by: 0
	configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
	module: 16
	properties:
		device.description = "Dummy Output"
		device.class = "abstract"
		device.icon_name = "audio-card"

Last edited by jward92 (2020-09-02 15:51:39)