The sound Packages in the LIVECD are at a certain package level by default, so by using a LIVECD if your sound worked flawlessly the problem could get narrowed down to specific packages that maintainers know have changed.
The sound Packages in the LIVECD are at a certain package level by default, so by using a LIVECD if your sound worked flawlessly the problem could get narrowed down to specific packages that maintainers know have changed.