[SOLVED] How to configure audio in VirtualBox guest?

lionoceros · 02-09-2014, 10:04 AM

I'm having some trouble getting alsa to work in Slackware64-14.1 in a VirtualBox VM. I'm running Slackware without X (though I do have the X series installed).

First, I made sure rc.alsa was executable. Then, after logging in as root, I ran alsamixer to unmute the channels. I tested the sound by running cat /dev/sda > /dev/dsp, but there was no sound.

I searched for some guides to set up sound in Slackware, but I'm not sure which guide to use. Are there official instructions I could use?

Here is the output of lsmod | grep snd (sorry the indentation didn't work correctly):

Code:

snd_intel8x0		28308	0
snd_ac97_codec		112023	1	snd_intel8x0
snd_pcm				76009	2	snd_ac97_codec,snd_intel8x0
snd_page_alloc		7098	2	snd_intel8x0,snd_pcm
snd_timer			18614	1	snd_pcm
snd					58630	4	snd_ac97_codec,snd_intel8x0,snd_timer,snd_pcm
soundcore			5354	1	snd
ac97_bus			1198	1	snd_ac97_codec

I have installed the A, AP, D, F, K, L, N, TCL, and X series. Perhaps I'm missing a dependency? Should I just go with a default full install next time?

lionoceros · 02-09-2014, 11:32 AM

Got it working! I read this part of the ArchWiki and set the channel volumes so dB gain = 0. Then, I ran the command speaker-test. It worked! For some reason the command cat /dev/sda > /dev/dsp doesn't work (which is what I used to use to test the sound), but that's probably not a big deal.