Audio doesn't play through headphones on Dell M3800
I'm running Fedora 21 on a Dell M3800. I just updated, and audio stopped working through my headphones.
Things I have checked:
- Audio plays fine through the speakers, and it plays fine through my USB headset.
- My sound card is a Realtek ALC3661
- The automute setting in alsamixer is disabled, and the headphone channel is not muted and has volume.
- pavucontrol shows that the headphones are plugged in, are not muted, and that audio is going through them.
- I log in as a new user, and the problem still doesn't exist, so I don't think it is my pulseaudio configuration.
- I tried deleting my /var/lib/alsa/asound.state and rebooting, but there was no change.
- The update included a kernel update from 4.1.5-100 to 4.1.8-100, but the problem appears even when I reboot with the previous kernel.
- The only other change that seems like it could be related is hwdata, which updated from 0.280-1 to version 0.282-1. I don't see anything obvious in the package changelog, and doing a yum downgrade to 0.271-1 didn't solve the problem.
Any suggestions?
It has been a week, and I can't find a solution. When I plug in my headphones, I get a variety of loud shriek buzz pulse noises even when the computer is not playing anything.