My Ubuntu Core device can’t seem to produce any sound. At first I thought I had issues, with my snap, but later on, I tried another snap “mpv-kiosk”, but it too had the same problem. No sound. Am i missing something? Any help would be really helpful. I have trying to fix this issue for several days now. Thanks
Here is the link to mpv-kiosk ( github ): https://github.com/ryanjyoder/mpv-kiosk/ Snapcraft mpv-kiosk: https://snapcraft.io/install/mpv-kiosk/ubuntu
you can use the pulseaudio snap from the beta channel:
snap install pulseaudio --beta
make sure the audio-playback interface of apps is connected to pulse …
there are also some hints how to use pulse on an UC20 device (control volume etc) in the README:md at:
Hi @ogra. Thanks for the reply. My audio-playback plug is already connected to pulseaudio and I downloaded pulseaudio from the beta channel. I tried increasing the volume. But no luck. No sound. By the way, I am using a Virtual Machine. Do you think the sound issue, might be related to that?
well, if your virtual machine usually plays audio it should with Ubuntu Core as well … check with
sudo pulseaudio.pactl list sinks
to see if you have more than the dummy output device …
if you do, but there are multiple sinks returned, you might need to switch the default output sink using
sudo pulseaudio.pactl set-default-sink $Name-that-the-above-returnedHi @ogra. Sorry for the late reply.
I tried this sudo pulseaudio.pactl list sinks command and got the following output.
Sink #0
State: RUNNING
Name: alsa_output.pci-0000_00_05.0.analog-stereo
Description: Built-in Audio Analog Stereo
Driver: module-alsa-card.c
Sample Specification: s16le 2ch 48000Hz
Channel Map: front-left,front-right
Owner Module: 6
Mute: yes
Volume: front-left: 10387 / 16% / -48.00 dB, front-right: 61870 / 94% / -1.50 dB
balance 0.83
Base Volume: 65536 / 100% / 0.00 dB
Monitor Source: alsa_output.pci-0000_00_05.0.analog-stereo.monitor
Latency: 70202 usec, configured 99937 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 = "Intel 82801AA-ICH"
alsa.id = "Intel ICH"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "Intel 82801AA-ICH"
alsa.long_card_name = "Intel 82801AA-ICH with AD1980 at irq 21"
alsa.driver_name = "snd_intel8x0"
device.bus_path = "pci-0000:00:05.0"
sysfs.path = "/devices/pci0000:00/0000:00:05.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "2415"
device.product.name = "82801AA AC'97 Audio Controller"
device.form_factor = "internal"
device.string = "front:0"
device.buffering.buffer_size = "19188"
device.buffering.fragment_size = "6396"
device.access_mode = "mmap"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "Built-in Audio Analog Stereo"
alsa.mixer_name = "Analog Devices AD1980"
alsa.components = "AC97a:41445370"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Ports:
analog-output;output-amplifier-on: Analog Output / Amplifier (priority: 9910)
analog-output;output-amplifier-off: Analog Output / No Amplifier (priority: 9900)
Active Port: analog-output;output-amplifier-on
Formats:
pcm
After that I used the command
sudo pulseaudio.pactl set-default-sink alsa_output.pci-0000_00_05.0.analog-stereo
But still no sound.
well, it looks all okay and pulseaudio thinks it is currently playing sound through a headphone jack (State: RUNNING) …
do you perhaps need to set up something on your host ?
try using pavucontrol on the host, perhaps the audio from the VM is simply not routed correctly on the host …
From your list sinks output:
You’re going to want to run $ pactl set-sink-mute {sink_name} 0