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#1 2017-02-17 19:02:13

adergaard
Member
Registered: 2016-07-27
Posts: 14

Sound not working on iMac 5k (Late 2014 model)

Having just installed Arch on iMac 5k, all is working quite well except for sound.
I have seen another thread (see link below) where someone on a rather similar hardware had the same problem. Alas I cannot see his solution as he writes about PulseAudio profiles etc and how "now I got it working".

[Solved]Sound not working on iMac 4K

So, I'm at a place where I could use some help. I have PulseAudio installed and I have not tampered with any config files yet.
When playing any kind of sound from any source, in pavucontrol I "see" the sound but there's nothing from the speakers

Here are the result of some commands that can be of interest.

lspci -v | grep -i audio

00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Tonga HDMI Audio [Radeon R9 285/380]
	Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Tonga HDMI Audio [Radeon R9 285/380]

aplay -lL

null
    Discard all samples (playback) or generate zero samples (capture)
default:CARD=PCH
    HDA Intel PCH, CS4206 Analog
    Default Audio Device
sysdefault:CARD=PCH
    HDA Intel PCH, CS4206 Analog
    Default Audio Device
front:CARD=PCH,DEV=0
    HDA Intel PCH, CS4206 Analog
    Front speakers
surround21:CARD=PCH,DEV=0
    HDA Intel PCH, CS4206 Analog
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
    HDA Intel PCH, CS4206 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
    HDA Intel PCH, CS4206 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
    HDA Intel PCH, CS4206 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
    HDA Intel PCH, CS4206 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
    HDA Intel PCH, CS4206 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=PCH,DEV=0
    HDA Intel PCH, CS4206 Digital
    IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=HDMI,DEV=0
    HDA ATI HDMI, HDMI 0
    HDMI Audio Output
hdmi:CARD=HDMI,DEV=1
    HDA ATI HDMI, HDMI 1
    HDMI Audio Output
hdmi:CARD=HDMI,DEV=2
    HDA ATI HDMI, HDMI 2
    HDMI Audio Output
hdmi:CARD=HDMI,DEV=3
    HDA ATI HDMI, HDMI 3
    HDMI Audio Output
hdmi:CARD=HDMI,DEV=4
    HDA ATI HDMI, HDMI 4
    HDMI Audio Output
hdmi:CARD=HDMI,DEV=5
    HDA ATI HDMI, HDMI 5
    HDMI Audio Output
hdmi:CARD=HDMI,DEV=6
    HDA ATI HDMI, HDMI 6
    HDMI Audio Output
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CS4206 Analog [CS4206 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: CS4206 Digital [CS4206 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 9: HDMI 3 [HDMI 3]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 10: HDMI 4 [HDMI 4]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 11: HDMI 5 [HDMI 5]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 12: HDMI 6 [HDMI 6]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

pacmd list-cards

2 card(s) available.
    index: 0
	name: <alsa_card.pci-0000_01_00.1>
	driver: <module-alsa-card.c>
	owner module: 6
	properties:
		alsa.card = "1"
		alsa.card_name = "HDA ATI HDMI"
		alsa.long_card_name = "HDA ATI HDMI at 0xb0960000 irq 37"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:01:00.1"
		sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1"
		device.bus = "pci"
		device.vendor.id = "1002"
		device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
		device.product.id = "aad8"
		device.product.name = "Tonga HDMI Audio [Radeon R9 285/380]"
		device.string = "1"
		device.description = "Tonga HDMI Audio [Radeon R9 285/380]"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	profiles:
		output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5400, available: no)
		output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (priority 300, available: no)
		output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (priority 300, available: no)
		output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (priority 5200, available: no)
		output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (priority 100, available: no)
		output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (priority 100, available: no)
		output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (priority 5200, available: no)
		output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (priority 100, available: no)
		output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (priority 100, available: no)
		output:hdmi-stereo-extra3: Digital Stereo (HDMI 4) Output (priority 5200, available: no)
		output:hdmi-surround-extra3: Digital Surround 5.1 (HDMI 4) Output (priority 100, available: no)
		output:hdmi-surround71-extra3: Digital Surround 7.1 (HDMI 4) Output (priority 100, available: no)
		output:hdmi-stereo-extra4: Digital Stereo (HDMI 5) Output (priority 5200, available: no)
		output:hdmi-surround-extra4: Digital Surround 5.1 (HDMI 5) Output (priority 100, available: no)
		output:hdmi-surround71-extra4: Digital Surround 7.1 (HDMI 5) Output (priority 100, available: no)
		output:hdmi-stereo-extra5: Digital Stereo (HDMI 6) Output (priority 5200, available: no)
		output:hdmi-surround-extra5: Digital Surround 5.1 (HDMI 6) Output (priority 100, available: no)
		output:hdmi-surround71-extra5: Digital Surround 7.1 (HDMI 6) Output (priority 100, available: no)
		output:hdmi-stereo-extra6: Digital Stereo (HDMI 7) Output (priority 5200, available: no)
		output:hdmi-surround-extra6: Digital Surround 5.1 (HDMI 7) Output (priority 100, available: no)
		output:hdmi-surround71-extra6: Digital Surround 7.1 (HDMI 7) Output (priority 100, available: no)
		off: Off (priority 0, available: unknown)
	active profile: <off>
	ports:
		hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-1: HDMI / DisplayPort 2 (priority 5800, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-2: HDMI / DisplayPort 3 (priority 5700, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-3: HDMI / DisplayPort 4 (priority 5600, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-4: HDMI / DisplayPort 5 (priority 5500, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-5: HDMI / DisplayPort 6 (priority 5400, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
		hdmi-output-6: HDMI / DisplayPort 7 (priority 5300, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "video-display"
index: 1
	name: <alsa_card.pci-0000_00_1b.0>
	driver: <module-alsa-card.c>
	owner module: 7
	properties:
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xb0a10000 irq 36"
		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 = "8c20"
		device.product.name = "8 Series/C220 Series Chipset High Definition Audio Controller"
		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 (priority 60, available: unknown)
		output:analog-stereo: Analog Stereo Output (priority 6000, available: unknown)
		output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (priority 6060, available: unknown)
		output:iec958-stereo: Digital Stereo (IEC958) Output (priority 5500, available: unknown)
		output:iec958-stereo+input:analog-stereo: Digital Stereo (IEC958) Output + Analog Stereo Input (priority 5560, available: unknown)
		off: Off (priority 0, available: unknown)
	active profile: <output:analog-stereo+input:analog-stereo>
	sinks:
		alsa_output.pci-0000_00_1b.0.analog-stereo/#0: Built-in Audio Analog Stereo
	sources:
		alsa_output.pci-0000_00_1b.0.analog-stereo.monitor/#0: Monitor of Built-in Audio Analog Stereo
		alsa_input.pci-0000_00_1b.0.analog-stereo/#1: Built-in Audio Analog Stereo
	ports:
		analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-speakers"
		analog-output-headphones: Headphones (priority 9000, latency offset 0 usec, available: yes)
			properties:
				device.icon_name = "audio-headphones"
		iec958-stereo-output: Digital Output (S/PDIF) (priority 0, latency offset 0 usec, available: unknown)
			properties:

A final note. I have seen the Arch Wiki for iMac Aluminium (whatever that is).
There's a note on something called /etc/modprobe.d/sound.conf and fiddling around with that gives headphone sounds with a whispering buzz in the background. Another of the settings listed in that wiki for the same config file gives the same but for the speakers, not the headphones.

Thanks for any help.

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#2 2017-02-18 00:32:36

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 21,668

Re: Sound not working on iMac 5k (Late 2014 model)

Don't do any of the modprobe fiddles for now, they usually break more than they solve. Then install pulseaudio-alsa, reboot. Then try to play something you expect to have sound from and post: 

sudo fuser -v /dev/snd/*
pacmd list-sinks
pacmd list-sink-inputs
amixer -c0

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#3 2017-02-18 05:40:48

adergaard
Member
Registered: 2016-07-27
Posts: 14

Re: Sound not working on iMac 5k (Late 2014 model)

V1del wrote:

Don't do any of the modprobe fiddles for now, they usually break more than they solve. Then install pulseaudio-alsa, reboot. Then try to play something you expect to have sound from and post: 

sudo fuser -v /dev/snd/*
pacmd list-sinks
pacmd list-sink-inputs
amixer -c0

Hi, and thanks for taking the time.
As crazy as it may sound, I now have sound working for the regular speakers (without any modprob, just installing the pulseaudio-alsa, no configurations made anywhere what so ever). However, using the headphones does not work. The sound can still be "seen" in pavucontrol for the headphones but no sound is there to hear.

Here is the output from the commands you requested. I'm running a random movie on VLC that gives sound in the regular speakers, but the output of the commands is from when having no sound using the headphones.

sudo fuser -v /dev/snd/*

Cannot stat file /proc/1443/fd/20: Permission denied
                     USER        PID ACCESS COMMAND
/dev/snd/controlC0:  myusername      700 F.... pulseaudio
/dev/snd/controlC1:  myusername      700 F.... pulseaudio
/dev/snd/pcmC0D0c:   myusername      700 F...m pulseaudio
/dev/snd/pcmC0D0p:   myusername      700 F...m pulseaudio

I have no idea what's going on with the permission denied thing there. I'm running the command with sudo as stated.

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 DYNAMIC_LATENCY
	state: RUNNING
	suspend cause: 
	priority: 9959
	volume: front-left: 41943 /  64% / -11.63 dB,   front-right: 41943 /  64% / -11.63 dB
	        balance 0.00
	base volume: 52057 /  79% / -6.00 dB
	volume steps: 65537
	muted: no
	current latency: 39.69 ms
	max request: 7 KiB
	max rewind: 344 KiB
	monitor source: 0
	sample spec: s16le 2ch 48000Hz
	channel map: front-left,front-right
	             Stereo
	used by: 1
	linked by: 5
	configured latency: 40.00 ms; range is 0.50 .. 1837.50 ms
	card: 1 <alsa_card.pci-0000_00_1b.0>
	module: 7
	properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "CS4206 Analog"
		alsa.id = "CS4206 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 0xb0a10000 irq 36"
		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 = "8c20"
		device.product.name = "8 Series/C220 Series Chipset High Definition Audio Controller"
		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 = "Cirrus Logic CS4206"
		alsa.components = "HDA:10134206,106b7a00,00100302"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-speakers"
		analog-output-headphones: Headphones (priority 9000, latency offset 0 usec, available: yes)
			properties:
				device.icon_name = "audio-headphones"
	active port: <analog-output-headphones>

pacmd list-sink-input

1 sink input(s) available.
    index: 3
	driver: <protocol-native.c>
	flags: START_CORKED FIX_RATE 
	state: RUNNING
	sink: 0 <alsa_output.pci-0000_00_1b.0.analog-stereo>
	volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB,   rear-left: 65536 / 100% / 0.00 dB,   rear-right: 65536 / 100% / 0.00 dB,   front-center: 65536 / 100% / 0.00 dB,   lfe: 65536 / 100% / 0.00 dB
	        balance 0.00
	muted: no
	current latency: 413.33 ms
	requested latency: 40.00 ms
	sample spec: float32le 6ch 48000Hz
	channel map: front-left,front-right,rear-left,rear-right,front-center,lfe
	             Surround 5.1
	resample method: copy
	module: 12
	client: 12 <VLC media player>
	properties:
		media.role = "video"
		media.name = "audio stream"
		application.name = "VLC media player"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "32"
		application.id = "org.VideoLAN.VLC"
		application.version = "2.2.4"
		application.icon_name = "vlc"
		application.language = "en_US.UTF-8"
		application.process.id = "1443"
		application.process.user = "myusername"
		application.process.host = "archone"
		application.process.binary = "vlc"
		window.x11.display = ":0.0"
		application.process.machine_id = "3f11b0d6683e4d9d98b5dcb2c326f1b3"
		application.process.session_id = "c2"
		module-stream-restore.id = "sink-input-by-media-role:video"

amixer -c0

Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 127
  Mono: Playback 116 [91%] [-5.50dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 127
  Mono:
  Front Left: Playback 115 [91%] [0.00dB] [on]
  Front Right: Playback 115 [91%] [0.00dB] [on]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 127
  Mono:
  Front Left: Playback 0 [0%] [-57.50dB] [off]
  Front Right: Playback 0 [0%] [-57.50dB] [off]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 254 [100%] [-0.20dB]
  Front Right: Playback 254 [100%] [-0.20dB]
Simple mixer control 'Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 2
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 63
  Front Left: Capture 63 [100%] [12.00dB] [on]
  Front Right: Capture 63 [100%] [12.00dB] [on]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'

Thanks again for taking the time.

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#4 2017-02-18 15:39:42

adergaard
Member
Registered: 2016-07-27
Posts: 14

Re: Sound not working on iMac 5k (Late 2014 model)

Some more information on this:

1) So VLC worked when I rebooted. It gave out a quite nice sound.
1.1) Trying Spotify did not work. Not a peep what so ever.
2) Headphones doesn't work, neither on VLC or any other source for that matter.
3) I tried watching a YouTube movie on VLC and it didn't give any sound.
4) After 3, VLC no longer produces any sound, until a reboot is done. Then it works for local movies again. Until trying something that doesn't work either YouTube or Spotify for example.
5) After 1.1 VLC no longer produces any sound, until a reboot is done. Then it works for local movies again. Until trying something that doesn't work either YouTube or Spotify for example.

I don't know if any of the above is relevant but that's how it is.

Last edited by adergaard (2017-02-18 15:40:46)

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