My sound is broken and I have a hard time discerning if it's a hardware or software problem.
At the moment, the speakers on my laptop work, as I can hear sound just fine when I watch a video. However, in the sound settings plug in switchboard, when I try to test my speakers, I hear nothing from Front Left and Front Right. I don't know if that's a problem with my speakers or with the sound settings module. I've reinstalled (purge + install) switchboard-plug-gcc-sound in case any config went awry, but the problem still persists.
As for my headphones, sometimes sound comes through only one channel (right), sometimes both, sometimes neither. Again, in the sound settings panel, I hear nothing when I test the left and right channels.
The other day, I was getting no sound through my headphones: nothing from sound test, nothing from videos, but strangely the beep worked just fine in both ears. I booted into an elementary live-cd environment and heard the sound working just fine, including the sound test. I thought I'd save the config (
~/.config/pulse) in the live-cd run and somehow incorporate that into my actual installation of freya, but once I booted back into it, all the sound was working again, including the sound tests, without me touching the config.