Bug 101674 - "Dummy Sound" when headphones plugged-in and sleep mode activated
Summary: "Dummy Sound" when headphones plugged-in and sleep mode activated
Status: RESOLVED NOTOURBUG
Alias: None
Product: PulseAudio
Classification: Unclassified
Component: daemon (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium major
Assignee: pulseaudio-bugs
QA Contact: pulseaudio-bugs
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-07-03 02:27 UTC by Ian McCausland
Modified: 2017-07-10 16:03 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments

Description Ian McCausland 2017-07-03 02:27:41 UTC 
I have been able to reproduce the following bug in both Ubuntu 17.04 and Manjaro 17.0.2 on a 2017 Dell Inspiron 15 5567. It uses RealTek audio codec ALC3246. If you plug in headphones, then put the laptop into sleep mode by shutting the lid, then open the lid again, audio hardware will cease to be detected and be replaced with "Dummy Output". Booting into another operating system, or booting onto a live USB will not fix this problem. However, if I take apart the back and unplug the CMOS battery to reset the NVRAM, audio will be immediately restored on reboot. I have been able to reproduce this and recover from it 100% of the time in both Manjaro and Ubuntu, running XFCE with the most up to date version of Pulse Audio.
Comment 1 Tanu Kaskinen 2017-07-03 14:48:40 UTC 
Sounds like a bug at a lower level than pulseaudio, but before reporting this to the alsa developers, can you try if you can reproduce the problem without pulseaudio? If you don't know how to do that, attach the output of "pactl list" and "cat /proc/asound/cards" when things are working, I'll give more instructions after that.
Comment 2 Ian McCausland 2017-07-03 15:05:20 UTC 
/proc/asound/cards:
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xd1228000 irq 280

pactl list:


Module #0
	Name: module-device-restore
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Automatically restore the volume/mute state of devices"
		module.version = "10.0"

Module #1
	Name: module-stream-restore
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Automatically restore the volume/mute/device state of streams"
		module.version = "10.0"

Module #2
	Name: module-card-restore
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Automatically restore profile of cards"
		module.version = "10.0"

Module #3
	Name: module-augment-properties
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Augment the property sets of streams with additional static information"
		module.version = "10.0"

Module #4
	Name: module-switch-on-port-available
	Argument: 
	Usage counter: n/a
	Properties:
		

Module #5
	Name: module-udev-detect
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Detect available audio hardware and load matching drivers"
		module.version = "10.0"

Module #6
	Name: module-alsa-card
	Argument: device_id="0" name="pci-0000_00_1f.3" card_name="alsa_card.pci-0000_00_1f.3" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes card_properties="module-udev-detect.discovered=1"
	Usage counter: 0
	Properties:
		module.author = "Lennart Poettering"
		module.description = "ALSA Card"
		module.version = "10.0"

Module #7
	Name: module-bluetooth-policy
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Frédéric Dalleau, Pali Rohár"
		module.description = "Policy module to make using bluetooth devices out-of-the-box easier"
		module.version = "10.0"

Module #8
	Name: module-bluetooth-discover
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "João Paulo Rechi Vita"
		module.description = "Detect available Bluetooth daemon and load the corresponding discovery module"
		module.version = "10.0"

Module #9
	Name: module-bluez5-discover
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "João Paulo Rechi Vita"
		module.description = "Detect available BlueZ 5 Bluetooth audio devices and load BlueZ 5 Bluetooth audio drivers"
		module.version = "10.0"

Module #10
	Name: module-esound-protocol-unix
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "ESOUND protocol (UNIX sockets)"
		module.version = "10.0"

Module #11
	Name: module-native-protocol-unix
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Native protocol (UNIX sockets)"
		module.version = "10.0"

Module #12
	Name: module-default-device-restore
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Automatically restore the default sink and source"
		module.version = "10.0"

Module #13
	Name: module-rescue-streams
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "When a sink/source is removed, try to move its streams to the default sink/source"
		module.version = "10.0"

Module #14
	Name: module-always-sink
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Colin Guthrie"
		module.description = "Always keeps at least one sink loaded even if it's a null one"
		module.version = "10.0"

Module #15
	Name: module-intended-roles
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Automatically set device of streams based on intended roles of devices"
		module.version = "10.0"

Module #16
	Name: module-suspend-on-idle
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "When a sink/source is idle for too long, suspend it"
		module.version = "10.0"

Module #17
	Name: module-console-kit
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Create a client for each ConsoleKit session of this user"
		module.version = "10.0"

Module #18
	Name: module-systemd-login
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Create a client for each login session of this user"
		module.version = "10.0"

Module #19
	Name: module-position-event-sounds
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Position event sounds between L and R depending on the position on screen of the widget triggering them."
		module.version = "10.0"

Module #20
	Name: module-role-cork
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "Mute & cork streams with certain roles while others exist"
		module.version = "10.0"

Module #21
	Name: module-filter-heuristics
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Colin Guthrie"
		module.description = "Detect when various filters are desirable"
		module.version = "10.0"

Module #22
	Name: module-filter-apply
	Argument: 
	Usage counter: n/a
	Properties:
		module.author = "Colin Guthrie"
		module.description = "Load filter sinks automatically when needed"
		module.version = "10.0"

Module #23
	Name: module-x11-publish
	Argument: display=:0.0
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "X11 credential publisher"
		module.version = "10.0"

Module #24
	Name: module-x11-xsmp
	Argument: display=:0.0 session_manager=local/medusa:@/tmp/.ICE-unix/3907,unix/medusa:/tmp/.ICE-unix/3907
	Usage counter: n/a
	Properties:
		module.author = "Lennart Poettering"
		module.description = "X11 session management"
		module.version = "10.0"

Sink #0
	State: SUSPENDED
	Name: alsa_output.pci-0000_00_1f.3.analog-stereo
	Description: Built-in Audio Analog Stereo
	Driver: module-alsa-card.c
	Sample Specification: s16le 2ch 44100Hz
	Channel Map: front-left,front-right
	Owner Module: 6
	Mute: no
	Volume: front-left: 28374 /  43% / -21.81 dB,   front-right: 28374 /  43% / -21.81 dB
	        balance 0.00
	Base Volume: 65536 / 100% / 0.00 dB
	Monitor Source: alsa_output.pci-0000_00_1f.3.analog-stereo.monitor
	Latency: 0 usec, configured 0 usec
	Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
	Properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "ALC3246 Analog"
		alsa.id = "ALC3246 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 0xd1228000 irq 280"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9d71"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "352800"
		device.buffering.fragment_size = "176400"
		device.access_mode = "mmap+timer"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analog Stereo"
		device.description = "Built-in Audio Analog Stereo"
		alsa.mixer_name = "Realtek ALC3246"
		alsa.components = "HDA:10ec0256,10280767,00100002 HDA:8086280b,80860101,00100000"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	Ports:
		analog-output-speaker: Speakers (priority: 10000)
		analog-output-headphones: Headphones (priority: 9000, not available)
	Active Port: analog-output-speaker
	Formats:
		pcm

Source #0
	State: SUSPENDED
	Name: alsa_output.pci-0000_00_1f.3.analog-stereo.monitor
	Description: Monitor of Built-in Audio Analog Stereo
	Driver: module-alsa-card.c
	Sample Specification: s16le 2ch 44100Hz
	Channel Map: front-left,front-right
	Owner Module: 6
	Mute: no
	Volume: front-left: 9995 /  15% / -49.00 dB,   front-right: 9995 /  15% / -49.00 dB
	        balance 0.00
	Base Volume: 65536 / 100% / 0.00 dB
	Monitor of Sink: alsa_output.pci-0000_00_1f.3.analog-stereo
	Latency: 0 usec, configured 0 usec
	Flags: DECIBEL_VOLUME LATENCY 
	Properties:
		device.description = "Monitor of Built-in Audio Analog Stereo"
		device.class = "monitor"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xd1228000 irq 280"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9d71"
		device.form_factor = "internal"
		device.string = "0"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	Formats:
		pcm

Source #1
	State: SUSPENDED
	Name: alsa_input.pci-0000_00_1f.3.analog-stereo
	Description: Built-in Audio Analog Stereo
	Driver: module-alsa-card.c
	Sample Specification: s16le 2ch 44100Hz
	Channel Map: front-left,front-right
	Owner Module: 6
	Mute: no
	Volume: front-left: 9995 /  15% / -49.00 dB,   front-right: 9995 /  15% / -49.00 dB
	        balance 0.00
	Base Volume: 6554 /  10% / -60.00 dB
	Monitor of Sink: n/a
	Latency: 0 usec, configured 0 usec
	Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
	Properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "ALC3246 Analog"
		alsa.id = "ALC3246 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 0xd1228000 irq 280"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9d71"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "352800"
		device.buffering.fragment_size = "176400"
		device.access_mode = "mmap+timer"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analog Stereo"
		device.description = "Built-in Audio Analog Stereo"
		alsa.mixer_name = "Realtek ALC3246"
		alsa.components = "HDA:10ec0256,10280767,00100002 HDA:8086280b,80860101,00100000"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	Ports:
		analog-input-internal-mic: Internal Microphone (priority: 8900)
		analog-input-headphone-mic: Microphone (priority: 8700, not available)
		analog-input-headset-mic: Headset Microphone (priority: 8700, not available)
	Active Port: analog-input-internal-mic
	Formats:
		pcm

Client #0
	Driver: module-systemd-login.c
	Owner Module: 18
	Properties:
		application.name = "Login Session c2"
		systemd-login.session = "c2"

Client #3
	Driver: module-x11-xsmp.c
	Owner Module: 24
	Properties:
		application.name = "XSMP Session on xfce4-session as 2159d3f97-86ba-4963-b479-502063b5ced6"
		xsmp.vendor = "xfce4-session"
		xsmp.client.id = "2159d3f97-86ba-4963-b479-502063b5ced6"

Client #4
	Driver: protocol-native.c
	Owner Module: 11
	Properties:
		application.name = "pa-applet"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "32"
		application.process.id = "4246"
		application.process.user = "scientifics"
		application.process.host = "medusa"
		application.process.binary = "pa-applet"
		application.language = "en_CA.utf8"
		window.x11.display = ":0.0"
		application.process.machine_id = "085bfaaf2ce44b1ab51d8ae63418ee05"
		application.process.session_id = "c2"

Client #9
	Driver: protocol-native.c
	Owner Module: 11
	Properties:
		application.name = "pactl"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "32"
		application.process.id = "5292"
		application.process.user = "scientifics"
		application.process.host = "medusa"
		application.process.binary = "pactl"
		application.language = "en_CA.utf8"
		window.x11.display = ":0.0"
		application.process.machine_id = "085bfaaf2ce44b1ab51d8ae63418ee05"
		application.process.session_id = "c2"

Card #0
	Name: alsa_card.pci-0000_00_1f.3
	Driver: module-alsa-card.c
	Owner Module: 6
	Properties:
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xd1228000 irq 280"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "9d71"
		device.form_factor = "internal"
		device.string = "0"
		device.description = "Built-in Audio"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	Profiles:
		input:analog-stereo: Analog Stereo Input (sinks: 0, sources: 1, priority: 60, available: yes)
		output:analog-stereo: Analog Stereo Output (sinks: 1, sources: 0, priority: 6000, available: yes)
		output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (sinks: 1, sources: 1, priority: 6060, available: yes)
		output:hdmi-stereo: Digital Stereo (HDMI) Output (sinks: 1, sources: 0, priority: 5400, available: no)
		output:hdmi-stereo+input:analog-stereo: Digital Stereo (HDMI) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5460, available: yes)
		output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (sinks: 1, sources: 0, priority: 300, available: no)
		output:hdmi-surround+input:analog-stereo: Digital Surround 5.1 (HDMI) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 360, available: yes)
		output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (sinks: 1, sources: 0, priority: 300, available: no)
		output:hdmi-surround71+input:analog-stereo: Digital Surround 7.1 (HDMI) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 360, available: yes)
		output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (sinks: 1, sources: 0, priority: 5200, available: no)
		output:hdmi-stereo-extra1+input:analog-stereo: Digital Stereo (HDMI 2) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5260, available: yes)
		output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 100, available: no)
		output:hdmi-surround-extra1+input:analog-stereo: Digital Surround 5.1 (HDMI 2) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 160, available: yes)
		output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 100, available: no)
		output:hdmi-surround71-extra1+input:analog-stereo: Digital Surround 7.1 (HDMI 2) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 160, available: yes)
		output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (sinks: 1, sources: 0, priority: 5200, available: no)
		output:hdmi-stereo-extra2+input:analog-stereo: Digital Stereo (HDMI 3) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5260, available: yes)
		output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 100, available: no)
		output:hdmi-surround-extra2+input:analog-stereo: Digital Surround 5.1 (HDMI 3) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 160, available: yes)
		output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (sinks: 1, sources: 0, priority: 100, available: no)
		output:hdmi-surround71-extra2+input:analog-stereo: Digital Surround 7.1 (HDMI 3) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 160, available: yes)
		off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
	Active Profile: output:analog-stereo+input:analog-stereo
	Ports:
		analog-input-internal-mic: Internal Microphone (priority: 8900, latency offset: 0 usec)
			Properties:
				device.icon_name = "audio-input-microphone"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:hdmi-stereo+input:analog-stereo, output:hdmi-surround+input:analog-stereo, output:hdmi-surround71+input:analog-stereo, output:hdmi-stereo-extra1+input:analog-stereo, output:hdmi-surround-extra1+input:analog-stereo, output:hdmi-surround71-extra1+input:analog-stereo, output:hdmi-stereo-extra2+input:analog-stereo, output:hdmi-surround-extra2+input:analog-stereo, output:hdmi-surround71-extra2+input:analog-stereo
		analog-input-headphone-mic: Microphone (priority: 8700, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "audio-input-microphone"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:hdmi-stereo+input:analog-stereo, output:hdmi-surround+input:analog-stereo, output:hdmi-surround71+input:analog-stereo, output:hdmi-stereo-extra1+input:analog-stereo, output:hdmi-surround-extra1+input:analog-stereo, output:hdmi-surround71-extra1+input:analog-stereo, output:hdmi-stereo-extra2+input:analog-stereo, output:hdmi-surround-extra2+input:analog-stereo, output:hdmi-surround71-extra2+input:analog-stereo
		analog-input-headset-mic: Headset Microphone (priority: 8700, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "audio-input-microphone"
			Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:hdmi-stereo+input:analog-stereo, output:hdmi-surround+input:analog-stereo, output:hdmi-surround71+input:analog-stereo, output:hdmi-stereo-extra1+input:analog-stereo, output:hdmi-surround-extra1+input:analog-stereo, output:hdmi-surround71-extra1+input:analog-stereo, output:hdmi-stereo-extra2+input:analog-stereo, output:hdmi-surround-extra2+input:analog-stereo, output:hdmi-surround71-extra2+input:analog-stereo
		analog-output-speaker: Speakers (priority: 10000, latency offset: 0 usec)
			Properties:
				device.icon_name = "audio-speakers"
			Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
		analog-output-headphones: Headphones (priority: 9000, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "audio-headphones"
			Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
		hdmi-output-0: HDMI / DisplayPort (priority: 5900, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "video-display"
			Part of profile(s): output:hdmi-stereo, output:hdmi-stereo+input:analog-stereo, output:hdmi-surround, output:hdmi-surround+input:analog-stereo, output:hdmi-surround71, output:hdmi-surround71+input:analog-stereo
		hdmi-output-1: HDMI / DisplayPort 2 (priority: 5800, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "video-display"
			Part of profile(s): output:hdmi-stereo-extra1, output:hdmi-stereo-extra1+input:analog-stereo, output:hdmi-surround-extra1, output:hdmi-surround-extra1+input:analog-stereo, output:hdmi-surround71-extra1, output:hdmi-surround71-extra1+input:analog-stereo
		hdmi-output-2: HDMI / DisplayPort 3 (priority: 5700, latency offset: 0 usec, not available)
			Properties:
				device.icon_name = "video-display"
			Part of profile(s): output:hdmi-stereo-extra2, output:hdmi-stereo-extra2+input:analog-stereo, output:hdmi-surround-extra2, output:hdmi-surround-extra2+input:analog-stereo, output:hdmi-surround71-extra2, output:hdmi-surround71-extra2+input:analog-stereo
Comment 3 Tanu Kaskinen 2017-07-04 13:20:45 UTC 
Try this before and after closing the laptop lid:

    pasuspender -- speaker-test -Dhw:0 --channels=2

That will play some noise. Press ctrl-c when you've had enough.

pasuspender makes pulseaudio release the alsa devices and then runs speaker-test. The -Dhw:0 argument makes speaker-test use the hardware directly instead of playing through pulseaudio.

Does speaker-test stop working after closing the lid?
Comment 4 Ian McCausland 2017-07-07 15:47:28 UTC 
No headphones: sound stops when lid closed (activating suspend), sound starts again when lid opened and suspend is over.

Headphones: sound stops when lid closed, starts when lid open

Headphones in, sound stops when lid closed, starts when lid opened, switches to internal speakers when headphones unplugged.

Fourth time I tried it again with headphones in, first it kept going when the lid was closed, laptop didn't suspend, I opened the lid and suspend state activated after a few seconds, then I lost all sound. Headphones were plugged in the whole time.
Comment 5 Ian McCausland 2017-07-07 15:54:14 UTC 
After restart I get this message from pasuspender:

speaker-test 1.1.4

Playback device is hw:0
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Playback open error: -2,No such file or directory
Comment 6 Tanu Kaskinen 2017-07-10 16:03:51 UTC 
If trying to open "hw:0" fails with "No such file or directory", then it looks like alsa removes the sound card from the system for some reason. Please report this to the alsa developers.

http://alsa-project.org/main/index.php/Bug_Tracking

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