On ubuntu 12.04 I found two workarounds to make appear hdmi in the sound settings:
1. Restart pulseaudio sudo killall pulseaudio 2. Send noise to the hdmi output It's play something on the PCM with aplay. The dmesg didn't show up anything about hdmi till I played sound to it. Maybe the device connected (TV through HDMI) does not activate the sound till you try to play something? Just guessing. cat /dev/urandom | aplay -f S16_LE -c2 -r44100 -D hdmi # ctrl+c when you have heard the noise on the tv. The hdmi word is the PCM where you are sending the sound. Noise in this case. You can see your available PCMs by "aplay -L" I can confirm too that this only happens after suspending the PC. When the computer has not been suspended (fresh boot), the hdmi device appears right away in the sound settings after plugging the hdmi, as should be expected. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/974963 Title: [soundnua]: hdmi audio missing in sound settings Status in “alsa-driver” package in Ubuntu: Incomplete Status in “gnome-control-center” package in Ubuntu: Invalid Bug description: When using sound settings, under unity, the option hdmi-audio is missing, while under gnome-panel it is available and works fine. Steps to reproduce: log into unity select system settings -> sound settings only analogue output available. Now log into gnome panel: same procedure as above hdmi audio is there and works. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: gnome-control-center 1:3.4.0-0ubuntu4 Uname: Linux 3.3.0-030300-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 2.0-0ubuntu4 Architecture: amd64 Date: Fri Apr 6 10:48:11 2012 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) SourcePackage: gnome-control-center UpgradeStatus: Upgraded to precise on 2012-03-26 (10 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/974963/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
