Persistent Dummy Output

Question

The soundcard I want to use is detected and works (it only recently switched to dummy output and didn't allow me to go back).

HDMI is no longer listed under Audio and Video - KDE Control Module; everything under audio module is set to dummy output and its the only 'soundcard' on the list now. I can view my previous sound cards in alsamixer, but changing the settings from there does nothing.

How can I get my real soundcards to work again?

I have already tried the following answers without success:

How do I get my sound working?

EDIT:

name@name-desktop:~$ lspci -vvv | grep -A8 Audio
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Kaveri HDMI/DP Audio Controller
        Subsystem: ASRock Incorporation Kaveri HDMI/DP Audio Controller
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin B routed to IRQ 43
        Region 0: Memory at ff764000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel
--
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 01)
        Subsystem: ASRock Incorporation FCH Azalia Controller
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 32, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 16
        Region 0: Memory at ff760000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel

Could this image possibly help?:

There is another soundcard but I'm unsure of what its for because it never outputs sound, but it does have a lot of settings: that sound card is labelled as "HD-Audio Generic".

So I went into Software & Updates under the Additional drivers tab and I see this:

It was on Do not use the device so I changed it and applied the settings but unfortunately the soundcard isn't back even after reboot.

Solution 1

There doesn't seem to be a solution to this so I just re-installed Kubuntu and the sound works perfect.

Downside: wiped everything else (but I didn't have much on my ssd so it was fine)

Solution 2

I don't know what's the problem or why it happens, but that worked for me.

pulseaudio --kill
pulseaudio --start

Solution 3

First, replace any previous configurations:

sudo apt-get update
mkdir PULSE
cd PULSE
apt-get download pulseaudio
ar xvf *
tar xvf dat*
sudo rm /etc/pulse/*
sudo mv etc/pulse/* /etc/pulse/

Then, run the following commands:

sudo apt-get install --reinstall linux-image-$(uname -r)
sudo modprobe snd-hda-intel
rm -r ~/.config/pulse*
pulseaudio -k

source

Solution 4

For those using the snd_hda_intel module

1. Check if you are using the snd_hda_intel kernel module:

   lsmod | grep snd_hda_intel
   lspci -nnk | grep -A2 Audio
   

2. If so, add two lines (you may need only the first line) to alsa-base.conf using the commands below.

   echo "options snd-hda-intel model=generic" | sudo tee -a /etc/modprobe.d/alsa-base.conf
   echo "options snd-hda-intel dmic_detect=0" | sudo tee -a /etc/modprobe.d/alsa-base.conf
   

NOTE: It was suggested to also add a third line but my system worked without me adding it. Add that using this command:

echo "blacklist snd_soc_skl" | sudo tee -a /etc/modprobe.d/blacklist.conf

REF: Fix No Sound (Dummy Output) Issue In Ubuntu With SND HDA Intel

View more solutions

Comments

[HelpMeee]

PulseAudio Sound Server is now in place of Dummy output in the Audio and Video - KDE Control Module as a audio playback device , but it still says "Dummy output" in the tray, but that might be just a display issue.. not sure. Either way, system sound test still outputs no audio. Also my original soundcards are still not back. I actually had the PulseAudio Sound Server situation before, and thats what made me try to uninstall it.

[HelpMeee]

I'll reboot in about two hours to look for improvements (currently waiting for files to finish downloading).

[HelpMeee]

Rebooting actually changed the PulseAudio Sound Server back to Dummy Output :( Sorry to disappoint

[mchid]

@HelpMeee Try running commands 2, 3, & 4. According to the thread, some people have to modprobe snd-hda-intel after every boot.

[HelpMeee]

Yes, its back to PulseAudio Sound Server, but its still Dummy Output everywhere else and there's no sound.

[mchid]

@HelpMeee Did you see the new default.pa file I posted at askubuntu.com/questions/491346/how-do-i-get-my-sound-working It's listed under "Alternatively, this is the /etc/pulse/default.pa for 16.04"

[HelpMeee]

Yes, replaced everything in that file again after you updated it, unfortunately there's hadn't been a change.

[mchid]

@HelpMeee For good measure, I have included some new instructions.

[mchid]

@HelpMeee I have updated the instructions again as I saw a typo.

[HelpMeee]

Same thing as before: "PulseAudio Sound Server is now in place of Dummy output in the Audio and Video - KDE Control Module as a audio playback device , but it still says "Dummy output" in the tray," also still have to re-run that code in the terminal everytime after rebooting to keep it that way

[mchid]

@HelpMeee Do you have ATI graphics as well, you may need the proprietary driver which would also include the sound driver for HDMI?

[HelpMeee]

Only one, and I applied it and rebooted yet there doesn't seem to be a change (in the picture I just added). The official driver manager for KDE seems useless because all it says is "Collecting information about your system" (didn't upload a picture of it).