I've just installed Ubuntu 20.04 in a desktop computer connected via hdmi with an external BenQ GW2480E monitor. I have perfect video display but no audio output at all. I have checked a lot of possible issues and workarounds but none o them seems to work for me.
Somo extra info:
inxi -SMA
output:
Kernel: 5.4.0-29-generic x86_64 bits: 64
Desktop: Gnome 3.36.1 Distro: Ubuntu 20.04 LTS (Focal Fossa)
Machine:
Type: Desktop System: Gigabyte product: B450M DS3H v: N/A
serial:
Mobo: Gigabyte model: B450M DS3H-CF v: x.x
serial: UEFI: American Megatrends v: F50
date: 11/27/2019
Audio:
Device-1: NVIDIA driver: snd_hda_intel
Device-2: AMD Starship/Matisse HD Audio driver: snd_hda_intel
Sound Server: ALSA v: k5.4.0-29-generic.
**** Lista de PLAYBACK dispositivos hardware ****
tarjeta 0: NVidia [HDA NVidia], dispositivo 3: HDMI 0 [HDMI 0]
Subdispositivos: 0/1
Subdispositivo #0: subdevice #0
tarjeta 0: NVidia [HDA NVidia], dispositivo 7: HDMI 1 [HDMI 1]
Subdispositivos: 1/1
Subdispositivo #0: subdevice #0
tarjeta 0: NVidia [HDA NVidia], dispositivo 8: HDMI 2 [HDMI 2]
Subdispositivos: 1/1
Subdispositivo #0: subdevice #0
tarjeta 0: NVidia [HDA NVidia], dispositivo 9: HDMI 3 [HDMI 3]
Subdispositivos: 1/1
Subdispositivo #0: subdevice #0
tarjeta 1: Generic [HD-Audio Generic], dispositivo 0: ALC887-VD Analog [ALC887-VD Analog]
Subdispositivos: 1/1
Subdispositivo #0: subdevice #0
tarjeta 1: Generic [HD-Audio Generic], dispositivo 1: ALC887-VD Digital [ALC887-VD Digital]
Subdispositivos: 1/1
Subdispositivo #0: subdevice #0
Best Answer
I have the same motherboard and the HDMI sound is working (sound is coming out of my screen) but the front and back jacks are not.
I only installed a recent kernel, maybe you can try that too? I used UKUU but you can also download them directly from https://kernel.ubuntu.com/~kernel-ppa/mainline/ and install them with
dpkg -i
.You should also try to upgrade your nvidia proprietary drivers.
For the record, here is the information of my system with HDMI sound working:
I would be very interested to know if your jack are working?