Typec connected to monitor no sound

#1

Is it because typec does not support output sound, or other settings are required？

Archlinux on Rock5b
#2

try through the headphone jack on the rock 5b and please provide more infos

#3

headphone and HDMI has sound，try switch output device in pulseaudio setting，only hdmi0, hdmi1 and es8316 sound card。
system：
rock-5b-debian-bullseye-xfce4-arm64-20220919-0912-gpt.img
monitor：
LG 34UC99

#4

cool then you can close this issue

#5

There is no dp sound configured in the device tree, I don’t know if that is supported.

#6

i think dp supports no sound

#7

I have a nintendo switch, when connecting to a typec monitor, there is sound from the monitor.

#8

oh ok i meant dp thats not embeded in usb-c

#9

aplay -D hw:2,0 test.wav have sound，but desktop pulseaudio control setting no sound

1 Like
#10

solution
sudo vim /etc/pulse/default.pa

load-module module-udev-detect tsched=0

append tsched=0

sudo gpasswd -a rock pulse
2 Likes
#11

I had the same issue and ended up buying an JBL speaker… and then audio wouldnt pass through this was my solution which I believe it also fixes for the monitor:

sudo add-apt-repository ppa:pipewire-debian/pipewire-upstream
sudo apt install pipewire pipewire-audio-client-libraries

Optional for streamers
sudo apt install gstreamer1.0-pipewire libpipewire-0.3-{0,dev,modules} libspa-0.2-{bluetooth,dev,jack,modules} pipewire{,-{audio-client-libraries,pulse,media-session,bin,locales,tests}}

systemctl --user daemon-reload
systemctl --user --now disable pulseaudio.service pulseaudio.socket
systemctl --user --now enable pipewire pipewire-pulse
pactl info
reboot