Le dimanche 23 janvier 2011 ? 21:13 +0000, Colin Guthrie a ?crit : > 'Twas brillig, and Xavier Bestel at 23/01/11 20:24 did gyre and gimble: > > Le dimanche 23 janvier 2011 ? 10:16 +0000, Colin Guthrie a ?crit : > >> IIUC, HDMI is a digital output and as such only accepts either stereo > >> PCM or pre-encoded streams that you pass through directly without any > >> mixing or interference. > > > > Well, IIUC you're speaking about optical outputs which have the bandwith > > only for stereo PCM or dolby/dts encoded 6/7/8 channels, whereas HDMI > > has the bandwidth & protocol for 8 channels. See > > http://en.wikipedia.org/wiki/High-Definition_Multimedia_Interface > > In that case PA should just piggy back on the ALSA devices > "surround51:1" etc. (where 1 is the card number of the HDMI). There's not such device: [root at awak:~]$ aplay -L null Discard all samples (playback) or generate zero samples (capture) default:CARD=Intel HDA Intel, STAC92xx Analog Default Audio Device front:CARD=Intel,DEV=0 HDA Intel, STAC92xx Analog Front speakers surround40:CARD=Intel,DEV=0 HDA Intel, STAC92xx Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0 HDA Intel, STAC92xx Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0 HDA Intel, STAC92xx Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0 HDA Intel, STAC92xx Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0 HDA Intel, STAC92xx Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers hdmi:CARD=HDMI HDA ATI HDMI, HDMI 0 HDMI Audio Output (Ignore the CARD=Intel entries) There definitely a problem with ALSA, but I don't know how to diagnose it better. Xav
