Hi all, I get no sound on Ubuntu Cosmic on a Mac 27" bought recently (Apple product id = iMac 18,3), neither from the integrated loudspeakers nor from the headset, and no microphone works either. I tried all the classical fixes one finds on the forums, like declaring in /etc/modprobe.d/sound.conf one of the following: options snd-hda-intel model=imac27 options snd-hda-intel model=imac27_122 options snd-hda-intel model=generic options snd-hda-intel model=auto and then restarting alsa or rebooting, plus setting the audio inputs in KDE control center / alsamixer / pavucontrol / etc. Disabling the second card (Elsemere) at module level works, but does not help. I am testing directly at ALSA level (aplay). In pavucontrol I can see the sound going to output, but I still cannot hear anything. An interesting fact is that in alsamixer only the "PCM" slider appears, while alsa-info reports 15 of them. On my old iMac 9,1 from 2009 it was working like a charm with same up to date Ubuntu Cosmic. On the new mac, under Mac OS X sierra, the sound works fine. More technical details on http://www.alsa-project.org/db/?f=967cceb4549c0c382b002f1a7562c333df4596ad One finds similar reports out there, like: https://unix.stackexchange.com/questions/433103/is-there-a-linux-mint-driver-for-the-sound-card-of-the-imac-2017 I believe the Cirrus "Generic" chipset of this machine is simply not supported. I'm capable of recompiling stuff and retest, if some developers have the courage to give it a glance... Best, -- Éric Bischoff _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
