Archived post from my old blog (2007–2016), restored from the Wayback Machine. It is published as written at the time; tools and versions are likely out of date.

Su Gentoo ho avuto recentemente un problema con VirtualBox e l’audio delle macchine guest

Il problema era dato da questo bug:
https://bugs.gentoo.org/show_bug.cgi?id=310793
E la soluzione riportata lo risolve
La riporto qui per comodità

1. Open /usr/portage/media-libs/libsdl/libsdl-1.2.14-r6.ebuild as root with a
text editor,

2. adding a # before --disable-alsa-shared ====>
new code:

...

--enable-file \
-enable-cpuinfo \
#--disable-alsa-shared \
--disable-esd-shared \
--disable-pulseaudio-shared \

....

and finally:

cd /usr/portage/media-libs/libsdl
ebuild libsdl-1.2.14-r6.ebuild manifest
emerge -1av libsdl

Riavviate VirtualBox e tahdah, l’audio funziona