It looks like a recent package update may have broken pulse on artful, as I too am seeing this on my previously working artful installation. I hadn't rebooted in a week or three, so I can't say exactly which package broke it.
I can tell you how I fixed it, though: aplay -l and other things showed that the sound devices were in fact being seen by the system, it seemed that it might be a pulseaudio issue. Looking closer, I found the following in syslog... ----------- Jul 13 08:25:15 sager pulseaudio[28983]: E: [pulseaudio] module.c: Module "module-switch-on-connect" should be loaded once at most. Refusing to load. Jul 13 08:25:15 sager pulseaudio[28983]: E: [pulseaudio] main.c: Module load failed. Jul 13 08:25:15 sager pulseaudio[28983]: E: [pulseaudio] main.c: Failed to initialize daemon. Jul 13 08:25:15 sager systemd[8923]: pulseaudio.service: Main process exited, code=exited, status=1/FAILURE Jul 13 08:25:15 sager systemd[8923]: Failed to start Sound Service. ----------- I don't know that much about pulse config/internals, but digging around I found a reference to that module in /etc/pulse/default.pa. I commented out the second to the last line, where it tries to load module-switch-on-connect, and then was able to restart pulse audio (systemctl --user start pulseaudio) and all of my sound devices were found and are now working accordingly. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1703221 Title: no sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsamixergui/+bug/1703221/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
