I just put together an i5-13600k build and installed Ubuntu on it. I'm using a receiver for audio connected via HDMI. For now, I'm using a DisplayPort to HDMI adapter. Both cable and adapter work perfectly on another computer. I keep having audio issues.
Try #1 - Intel Integrated Graphics - same issue on both 22.04 and 22.10. I'd tried 22.04 before wiping and clean install of 22.10. Video works fine, and the audio shows it as detected Displayport/HDMI Stereo output. I tried switching to the audio on my Yeti mic and heard sound through it, but that's not a solution.
Try #2 - (22.10 only, didn't test 22.04) Drop in old Nvidia GTX 950 - noveau driver - didn't test audio, it wouldn't display 4k60Hz.
Try #3 - (22.10 only, didn't test 22.04) GTX 950 - proprietary driver - audio now functions and I've got 4k60Hz on the screen. However, when I'm clicking around and doing other stuff while music is playing or a video is playing, there's frequent hitches or pops in the audio. It doesn't sound like static, it's more like a record skipping a beat here and there. I saw that 22.10 switched the audio setup. I remember having to tweak pulseaudio for my previous build, but that seemed like it wouldn't apply with pipewire here. Searching found something about raising the quantum values in pipewire.conf. Here's what I've got now:
default.clock.allowed-rates = [ 44100 48000 ]
default.clock.quantum = 64
default.clock.min-quantum = 32
default.clock.max-quantum = 768
It doesn't seem like it's doing anything, though. I want it to do 44100 natively and 48000 natively, so I like that adjustment. I'd raised the quantum and min-quantum based on the forum post, but I'm not sure what those are doing. On the 20.04 build, I could do anything I wanted and audio playback wouldn't be affected.
I'm okay dropping back to 22.04; I'd prefer an LTS version anyway. And I don't care about Pipewire vs Pulseaudio. I just want 4k60Hz and audio that doesn't skip. It doesn't matter if I use the 950 or the integrated graphics. Note that if the same issue would apply to a 4080 or 4090, I'm planning on installing that in the future. So, it might be better to get working audio via the Nvidia card, as that may save troubleshooting in the future.
