Re: No sound on laptop after linux-libre 5.15

[Leo Famulari]

On Wed, Dec 08, 2021 at 11:34:24PM -0300, Thiago Jung Bauermann wrote:
> Em quarta-feira, 8 de dezembro de 2021, às 01:55:13 -03, Paxton Evans 
> escreveu:
> > Rolling back to linux-libre 5.14.21 (guix
> > ea7233befb9570cce47e5ca71725b285a580cd22) totally fixes this issue.
> > 
> > Troubleshooting sound issues on GNU/Linux is such a nightmare that I'm
> > hoping this list can help me, as I don't really know much about how
> > sound on our favorite OS really works, and don't have enough information
> > to file a bug. Can anyone give me pointers on where to start looking?
> > dmesg on 5.15.6 didn't seem to report anything strange.

Thanks for your report. Everything Thiago said is important, and it
would also help if you told us what you had tried to do. That is, what
are you using to make sound?

My basic sound test is to use mpg123 to play an MP3 file. You can use
the --output option to choose which output to play through, to be sure.
And you can use --list-modules to see what's available.

On Guix System, we aim to make applications use Pulseaudio by default,
so you can use `mpg123 --output pulse file.mp3` to test that. You can
also use `mpg123 --output alsa file.mp3` if you'd rather test ALSA.

Unfortunately I currently cannot test sound on Guix System with
linux-libre. However, it does work for me on a computer using Guix
System with a custom kernel.