I have similiar issue. I use TV as a 2nd video output - connected by HDMI. Sound should be played, but it doesn't work. On Windows sound works with official nvidia drivers.
Already I got Ubuntu 12.04, but this problem I've got since I use TV - it was Ubuntu 9.04. About this bug - I think that HDMI-sound option is not necessary. TV should plays sound normally. ** Changed in: nvidia-graphics-drivers (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/590180 Title: 5.1 sound does not work with HDMI audio. There is only option for stereo. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/590180/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp