No sound HDMI/DISPLAYPORT

[lephiziel (Zakhar Solovev)]

Just downloaded fedora, started customizing and ran into a problem. My monitor has speakers, when I was using Windows everything was fine, but on fedora they stopped working, but when making video or music the scale in the settings twitches, so the sound goes, but is not output to the speakers themselves. I also have separate speakers, from them the sound works fine, but I need sound from my monitor, tried everything I can, I hope for your help.

[glb (Gregory Lee Bartholomew)]

@lephiziel

… when making video or music the scale in the settings twitches, so the sound goes, but is not output to the speakers themselves. …

It sounds like you have the sound output set to the wrong device. I’m guessing your monitor is connected to HDMI?

I’ve also seen a few reports of problems with SPDIF output on certain sound cards. Using the alsamixer command to mute all but the desired output channel has been reported to workaround that problem.

[scottro (Scott Robbins)]

I’m going to spam my own page for pipewire here, which was done on a Fedora minimal install. (The Fedora section is at the top.
https://srobb.net/pipewire.html

[anotheruser (Mark)]

In case you have a Nvidia GPU and use the default Nouveau driver. This driver does support audio only on a HDMI port. Audio on DisplayPort is not implemented.

[jwiel (Jan Wielemaker)]

@anotheruser

This driver does support audio only on a HDMI port.

I can confirm this. Any hope this will be resolved? I’m trying to use Zoom. Using the nouveau driver I have no sound, using the Nvidia driver screen sharing just shares a black screen NVidia gives me CUDA, which I also need for some of my work. But, the Fedora (41) crashes using the NVidia driver over HDMI, while it works fine on display port … Now I’d have to switch cables, enable nouveau and reboot for Zoom and back again for anything else Switching to Xorg is supposed to solve the screen sharing, but this is not so easy any longer on Fedora 41

[glb (Gregory Lee Bartholomew)]

@jwiel

@anotheruser

This driver does support audio only on a HDMI port.

I can confirm this. … I’m trying to use Zoom. … using the Nvidia driver screen sharing just shares a black screen [and] Fedora (41) crashes using the NVidia driver over HDMI, while it works fine on display port … Now I’d have to switch cables, enable nouveau and reboot for Zoom and back again for anything else …

If the problem is just no sound over DisplayPort connections, can’t you work around the problem by using a separate sound card?

Edit: Oh, I think I see what you mean – you get a black screen when screen sharing (using the Nvidia driver) regardless of the connection (HDMI or DP). I guess that is a separate problem.

[jwiel (Jan Wielemaker)]

@glb

I guess that is a separate problem.

True. I wrote this a little out of frustration. I switched to Fedora about a year ago. I’m very happy with it when it comes to the state and support wrt. the development tools. Since updating to Fedora 41 I have continuous trouble getting my graphics card to do what it should as well as random system freezes during idle time. Part of the problems seem to be Wayland, which I used to try every Linux release before disabling it again because, while improving, it poses more problems than it solves.