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#26 2018-01-16 06:51:46

taric
Member
Registered: 2018-01-10
Posts: 31

Re: Can't get sound on brand new iMac 27`

Woup, that was a typo because I wrote it manually instead of copy pasting!
I installed ubuntu, and sound doesn't work there. So, would it be safe to assume that it's the kernel that doesn't support the imac sound card?

In the meantime, here goes the output for each run: (This time, I'll copy paste to avoid mistakes!)

- - - -

options snd-hda-intel model=auto,mba6
❯ cat /proc/asound/card1/codec\#0 
Codec: ATI R6xx HDMI
Address: 0
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x1002aa01
Subsystem Id: 0x00aa0100
Revision Id: 0x100700
No Modem Function Group found
Default PCM:
    rates [0x70]: 32000 44100 48000
    bits [0x2]: 16
    formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D3 CLKSTOP EPSS
  Power: setting=D0, actual=D0, Clock-stop-OK
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x02 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled GenLevel
  Digital category: 0x2
  IEC Coding Type: 0x0
Node 0x03 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=0, device=0
  Control: name="IEC958 Playback Pro Mask", index=0, device=0
  Control: name="IEC958 Playback Default", index=0, device=0
  Control: name="IEC958 Playback Switch", index=0, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=01, enabled=1
  Connection: 1
     0x02
Node 0x04 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled GenLevel
  Digital category: 0x2
  IEC Coding Type: 0x0
Node 0x05 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=1, device=0
  Control: name="IEC958 Playback Pro Mask", index=1, device=0
  Control: name="IEC958 Playback Default", index=1, device=0
  Control: name="IEC958 Playback Switch", index=1, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=02, enabled=1
  Connection: 1
     0x04
Node 0x06 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x07 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=2, device=0
  Control: name="IEC958 Playback Pro Mask", index=2, device=0
  Control: name="IEC958 Playback Default", index=2, device=0
  Control: name="IEC958 Playback Switch", index=2, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=03, enabled=1
  Connection: 1
     0x06
Node 0x08 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x09 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=3, device=0
  Control: name="IEC958 Playback Pro Mask", index=3, device=0
  Control: name="IEC958 Playback Default", index=3, device=0
  Control: name="IEC958 Playback Switch", index=3, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=04, enabled=1
  Connection: 1
     0x08
Node 0x0a [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x0b [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=4, device=0
  Control: name="IEC958 Playback Pro Mask", index=4, device=0
  Control: name="IEC958 Playback Default", index=4, device=0
  Control: name="IEC958 Playback Switch", index=4, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=05, enabled=1
  Connection: 1
     0x0a
Node 0x0c [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x0d [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=5, device=0
  Control: name="IEC958 Playback Pro Mask", index=5, device=0
  Control: name="IEC958 Playback Default", index=5, device=0
  Control: name="IEC958 Playback Switch", index=5, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=06, enabled=1
  Connection: 1
     0x0c
Node 0x0e [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=1, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x0f [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=6, device=0
  Control: name="IEC958 Playback Pro Mask", index=6, device=0
  Control: name="IEC958 Playback Default", index=6, device=0
  Control: name="IEC958 Playback Switch", index=6, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=07, enabled=1
  Connection: 1
     0x0e

- - - -

options snd-hda-intel model=auto,gpio0
❯ cat /proc/asound/card1/codec\#0 
Codec: ATI R6xx HDMI
Address: 0
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x1002aa01
Subsystem Id: 0x00aa0100
Revision Id: 0x100700
No Modem Function Group found
Default PCM:
    rates [0x70]: 32000 44100 48000
    bits [0x2]: 16
    formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D3 CLKSTOP EPSS
  Power: setting=D0, actual=D0, Clock-stop-OK
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x02 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled GenLevel
  Digital category: 0x2
  IEC Coding Type: 0x0
Node 0x03 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=0, device=0
  Control: name="IEC958 Playback Pro Mask", index=0, device=0
  Control: name="IEC958 Playback Default", index=0, device=0
  Control: name="IEC958 Playback Switch", index=0, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=01, enabled=1
  Connection: 1
     0x02
Node 0x04 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled GenLevel
  Digital category: 0x2
  IEC Coding Type: 0x0
Node 0x05 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=1, device=0
  Control: name="IEC958 Playback Pro Mask", index=1, device=0
  Control: name="IEC958 Playback Default", index=1, device=0
  Control: name="IEC958 Playback Switch", index=1, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=02, enabled=1
  Connection: 1
     0x04
Node 0x06 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x07 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=2, device=0
  Control: name="IEC958 Playback Pro Mask", index=2, device=0
  Control: name="IEC958 Playback Default", index=2, device=0
  Control: name="IEC958 Playback Switch", index=2, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=03, enabled=1
  Connection: 1
     0x06
Node 0x08 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x09 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=3, device=0
  Control: name="IEC958 Playback Pro Mask", index=3, device=0
  Control: name="IEC958 Playback Default", index=3, device=0
  Control: name="IEC958 Playback Switch", index=3, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=04, enabled=1
  Connection: 1
     0x08
Node 0x0a [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x0b [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=4, device=0
  Control: name="IEC958 Playback Pro Mask", index=4, device=0
  Control: name="IEC958 Playback Default", index=4, device=0
  Control: name="IEC958 Playback Switch", index=4, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=05, enabled=1
  Connection: 1
     0x0a
Node 0x0c [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x0d [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=5, device=0
  Control: name="IEC958 Playback Pro Mask", index=5, device=0
  Control: name="IEC958 Playback Default", index=5, device=0
  Control: name="IEC958 Playback Switch", index=5, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=06, enabled=1
  Connection: 1
     0x0c
Node 0x0e [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=1, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x0f [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=6, device=0
  Control: name="IEC958 Playback Pro Mask", index=6, device=0
  Control: name="IEC958 Playback Default", index=6, device=0
  Control: name="IEC958 Playback Switch", index=6, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=07, enabled=1
  Connection: 1
     0x0e

- - - -

options snd-hda-intel model=auto,imac27
❯ cat /proc/asound/card1/codec\#0 
Codec: ATI R6xx HDMI
Address: 0
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x1002aa01
Subsystem Id: 0x00aa0100
Revision Id: 0x100700
No Modem Function Group found
Default PCM:
    rates [0x70]: 32000 44100 48000
    bits [0x2]: 16
    formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
  Power states:  D0 D3 CLKSTOP EPSS
  Power: setting=D0, actual=D0, Clock-stop-OK
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x02 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled GenLevel
  Digital category: 0x2
  IEC Coding Type: 0x0
Node 0x03 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=0, device=0
  Control: name="IEC958 Playback Pro Mask", index=0, device=0
  Control: name="IEC958 Playback Default", index=0, device=0
  Control: name="IEC958 Playback Switch", index=0, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=01, enabled=1
  Connection: 1
     0x02
Node 0x04 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled GenLevel
  Digital category: 0x2
  IEC Coding Type: 0x0
Node 0x05 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=1, device=0
  Control: name="IEC958 Playback Pro Mask", index=1, device=0
  Control: name="IEC958 Playback Default", index=1, device=0
  Control: name="IEC958 Playback Switch", index=1, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=02, enabled=1
  Connection: 1
     0x04
Node 0x06 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x07 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=2, device=0
  Control: name="IEC958 Playback Pro Mask", index=2, device=0
  Control: name="IEC958 Playback Default", index=2, device=0
  Control: name="IEC958 Playback Switch", index=2, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=03, enabled=1
  Connection: 1
     0x06
Node 0x08 [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x09 [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=3, device=0
  Control: name="IEC958 Playback Pro Mask", index=3, device=0
  Control: name="IEC958 Playback Default", index=3, device=0
  Control: name="IEC958 Playback Switch", index=3, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=04, enabled=1
  Connection: 1
     0x08
Node 0x0a [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x0b [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=4, device=0
  Control: name="IEC958 Playback Pro Mask", index=4, device=0
  Control: name="IEC958 Playback Default", index=4, device=0
  Control: name="IEC958 Playback Switch", index=4, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=05, enabled=1
  Connection: 1
     0x0a
Node 0x0c [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x0d [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=5, device=0
  Control: name="IEC958 Playback Pro Mask", index=5, device=0
  Control: name="IEC958 Playback Default", index=5, device=0
  Control: name="IEC958 Playback Switch", index=5, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=06, enabled=1
  Connection: 1
     0x0c
Node 0x0e [Audio Output] wcaps 0x221: Stereo Digital Stripe
  Converter: stream=1, channel=0
  Digital: Enabled
  Digital category: 0x0
  IEC Coding Type: 0x0
Node 0x0f [Pin Complex] wcaps 0x400381: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=6, device=0
  Control: name="IEC958 Playback Pro Mask", index=6, device=0
  Control: name="IEC958 Playback Default", index=6, device=0
  Control: name="IEC958 Playback Switch", index=6, device=0
  Pincap 0x00000094: OUT Detect HDMI
  Pin Default 0x185600f0: [Jack] Digital Out at Int HDMI
    Conn = Digital, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Unsolicited: tag=07, enabled=1
  Connection: 1
     0x0e

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#27 2018-01-23 01:38:33

taric
Member
Registered: 2018-01-10
Posts: 31

Re: Can't get sound on brand new iMac 27`

What can i do to raise the bug at the kernel level?

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#28 2018-01-28 13:43:42

taric
Member
Registered: 2018-01-10
Posts: 31

Re: Can't get sound on brand new iMac 27`

Bump.
Anyone has a clue here?

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#29 2018-03-07 11:06:51

taric
Member
Registered: 2018-01-10
Posts: 31

Re: Can't get sound on brand new iMac 27`

bump again.

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#30 2018-03-07 12:05:46

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 4,686

Re: Can't get sound on brand new iMac 27`

The annoying thing here is that it seems that our modul redefinitions did end up getting applied to the wrong card anyway, for simple testing purposes change both to the model you want to test. e.g.

options snd-hda-intel model=imac27,imac27

Maybe it's still a simple model issue.

FWIW, if another round of changing the models doesn't work, could you remove that line completely and post the result of running the alsa-info.sh Script after doing so (and rebooting beforehand of course)

Another alternative (without any model redefinitions) is to check if you might be able to rearrange the PINs using hdajackretask.

The complete lack of reports on this other than this thread makes me doubt that this is really a general kernel issue, however a good place to start would be asking on the ALSA mailing list if someone has experiences with this.

In general please try to not bump, and if you have to try and research new information on your own so that you might be able to provide new relevant information.

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#31 2018-03-08 05:18:36

taric
Member
Registered: 2018-01-10
Posts: 31

Re: Can't get sound on brand new iMac 27`

Changing the model does not solve the problem.

Here's the output of the script (after removing the line and rebooting)  http://www.alsa-project.org/db/?f=216da … 4e6c1cca67

This is the latest iMac that i'm testing on. It's not a very common device and I doubt many would like to install linux on it.
Also, remember that I faced this issue while trying all sorts of other distros. I even hve ubuntu installed (triple boot OSX, arch, ubuntu), and even ubuntu can't play the sound.

I never posted anything to the ALSA mailing list. Can you point out where I should do that?

Thank you very much for the help and the tip regarding bumps.

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#32 2018-03-30 13:03:18

ruien
Member
From: Norway
Registered: 2013-02-27
Posts: 13

Re: Can't get sound on brand new iMac 27`

Hi Taric.

I have also a iMac 27 2017 model and having the same problem you have. Never got the internal sound to work. I tried Mint, Arch, opensuse and are now on manjaro. Did excactly the same things you did to make it work and no go. Doesnt matter which distro you are running  coz the sound is there but not via the internal speakers/headphones. On the other hand the bluetooth and network sound work perfectly fine and i use airplay, chromecast and bluetooth to play music and movies depending what i want to play.

Just have to wait for a smart geek to fix it smile

Cheers


Politically correct: A term used for whiny pussies that need shit sugar coated.

Offline

#33 2018-04-01 01:42:17

taric
Member
Registered: 2018-01-10
Posts: 31

Re: Can't get sound on brand new iMac 27`

Hey Ruien,

It's great to see that i'm not the only one facing the problem.
So basically, you are using an external monitor/TV to play the sounds instead of the iMac right?  Did you do this by connecting the iMac to the device via bluetooth?

I sure hope someone figures out what's going on. But in the meantime, I'll consider your solution.

Cheers!

Offline

#34 2018-04-10 14:44:14

freaky
Member
Registered: 2018-04-10
Posts: 1

Re: Can't get sound on brand new iMac 27`

FYI: Not an arch user, but found this thread as one of the first and have reported the issue to the ALSA mailing list.

This is a driver issue and as such related to the kernel, not the distribution (that said, some distro's adopt stuff faster than others wink).

Topic of the e-mail is: No audio on iMac18,1 (A1418) with kernel 4.15.14

Might take a while for search engines to pick it up.

Have tested with hda-analyzer changing the I/O outputs, none of them got me audio on the speakers.

Offline

#35 2018-04-12 02:16:09

taric
Member
Registered: 2018-01-10
Posts: 31

Re: Can't get sound on brand new iMac 27`

Hey Freaky,

Thx for posting to the ALSA mailing list. I had no clue how to do that, so Thx!
Googling the topic does yield the result at: https://www.spinics.net/lists/alsa-devel/msg76308.html

Keep us posted if you hear any news, and thx again for the help.

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