@zenny - Your lspci output is somewhat imprecise. Please attach the full output of lspci -vvnn. If you do indeed have a Radeon R5 230 based card, I don't think HDMI audio is supported on those yet.
@zenny - Your lspci output is somewhat imprecise. Please attach the full output of lspci -vvnn. If you do indeed have a Radeon R5 230 based card, I don't think HDMI audio is supported on those yet.