Feb 22, 2014
Surround Sound (5.1) with a CMI8788
Setting it to 5.1 in sound preferences (System Settings > Sound) was not enough. I had to manually uncomment the following line in /etc/pulse/daemon.conf:
default-sample-channels = 6

seen from United States
seen from United States
seen from Nicaragua
seen from China
seen from United States

seen from Singapore
seen from United States
seen from Germany
seen from Saudi Arabia
seen from United States
seen from United States
seen from United States
seen from United States

seen from United States
seen from Chile

seen from United Kingdom
seen from China
seen from Australia

seen from Germany
seen from United States
Surround Sound (5.1) with a CMI8788
Setting it to 5.1 in sound preferences (System Settings > Sound) was not enough. I had to manually uncomment the following line in /etc/pulse/daemon.conf:
default-sample-channels = 6