I rebooted and went into the "Ubuntu" desktop and looked at the sound settings. It shows an output tab and said "dummy". I clicked and was able to switch it to the nvidia card. I think maybe the nvidia card was off, which it should be since there's no output device connected.
I went back into my regular environment and observed that the nvidia output was available but not the built-in sound. I ran aplay test.wav and could see in pavucontrol that sound output was going to the nvidia output. (It shows a real-time output level bar.) I ran alsa force-reload. When I do this the message "Terminating processes: <pid>" appears and instantly at that point, the built in sound appears in pavucontrol on the configuration tab. For some reason though, in this case, even after I selected it, I still got no sound. I rebooted again, went straight into my normal environment, confirmed that only the nvidia card was available, ran 'alsa force-reload', the built- in sound appears instantly as described above, then there is a many second delay while alsa loads and messages about loading of sound driver modules appears. And then I can play sound, e.g. with aplay. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1828136 Title: [Intel DH67CL, Realtek ALC892, Grey SPDIF Out, Rear] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1828136/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs