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No HDMI Audio Output on Ubuntu 24.04.2 LTS (Works Fine on Kali)
I've been having persistent issues with HDMI audio output on various Linux distributions, including Manjaro, Linux Mint, and now Ubuntu 24.04.2 LTS (x86_64). Interestingly, HDMI audio did work out of the box on Kali Linux, so I know the hardware is capable of it.
System Information
Laptop: Acer Aspire V Nitro VN7-572G
OS: Ubuntu 24.04.2 LTS x86_64
CPU/GPU:
- Intel HD Graphics 520 (Skylake GT2)
- NVIDIA GeForce 945M (GM107M)
aplay -l Output
**** List of PLAYBACK Hardware Devices ****
card 1: hdadsp [hda-dsp], device 7: Analog HDA DSP (*) []
card 1: hdadsp [hda-dsp], device 8: Digital HDA DSP (*) []
card 1: hdadsp [hda-dsp], device 9: Alt Analog HDA DSP (*) []
card 1: hdadsp [hda-dsp], device 10: HDA DSP HDMI1 (*) []
card 1: hdadsp [hda-dsp], device 11: HDA DSP HDMI2 (*) []
card 1: hdadsp [hda-dsp], device 12: HDA DSP HDMI3 (*) []
lspci Highlights
00:02.0 VGA compatible controller: Intel HD Graphics 520
01:00.0 3D controller: NVIDIA GeForce 945M
01:00.1 Audio device: NVIDIA GM107 High Definition Audio Controller [GeForce 940MX]
Problem Details
- PulseAudio only lists "Pro Audio" as an output option (see screenshot 1 and screenshot 2).
- When I select "Pro Audio" without a number, it plays through the internal speakers, not HDMI.
- I've tried configuring the device via
alsaconf, but that didn't help. - Running
speaker-teston device 0,10 gives an error. - Tried a fix mentioned here, but after removing Intel HDA, I lost all audio.
Additional Info
ALSA Mixer screenshots:
System overview: Screenshot
What I've Tried:
- Enabling HDMI devices through
alsamixerandalsaconf - Verifying devices with
aplay -l - PulseAudio checks
- Reading multiple guides and forum posts
My Question: How can I enable HDMI audio output on this laptop using Ubuntu 24.04.2 LTS? Any help getting HDMI audio to work would be greatly appreciated.
