Hi all, I use jack as client (so with -dnet backend) and I'd like to route some streams to the hdmi output which is connected to a AV amplifier. $ aplay --list-devices | grep -vi subdev **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC1150 Analog [ALC1150 Analog] card 0: PCH [HDA Intel PCH], device 1: ALC1150 Digital [ALC1150 Digital] card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0] card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1] card 1: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2] card 1: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3] card 1: NVidia [HDA NVidia], device 10: HDMI 4 [HDMI 4] card 1: NVidia [HDA NVidia], device 11: HDMI 5 [HDMI 5] card 1: NVidia [HDA NVidia], device 12: HDMI 6 [HDMI 6] and $ aplay -L | grep -vE '^ ' default surround21 surround40 surround41 surround50 surround51 surround71 null samplerate speexrate jack oss pulse upmix vdownmix [...skipped all PCH entries...] hdmi:CARD=NVidia,DEV=0 hdmi:CARD=NVidia,DEV=1 hdmi:CARD=NVidia,DEV=2 [...] dsnoop:CARD=NVidia,DEV=3 dsnoop:CARD=NVidia,DEV=7 [...] hw:CARD=NVidia,DEV=3 hw:CARD=NVidia,DEV=7 [...] plughw:CARD=NVidia,DEV=3 plughw:CARD=NVidia,DEV=7 [...] usbstream:CARD=NVidia attempting to start zita-j2a or alsa_out starts up fine but I get no sound afterwards: *$ zita-j2a -j nv_out -c 8 -n2 -p1024 -r 48000 -d hdmi:NVidia,0* I have also tried other devices hdmi:NVidia,x # where x = 0-6 hw:NVidia,y # where y = 3,7,8,9,10,11,12 I also tried desperately some dmix and plughw devices. none produces any sound. Please note that if I don't use jackd, but instead output sound to pulseaudio (where hdmi output is selected as default), sound works fine. Googling about it only helped confuse me further because i am now not even sure if simple PCM output (which is what -I presume- zita outputs) is the "right type of stream". i.e. does pulseaudio convert the stream to some digital DTS/AC3 etc format instead of pcm ? Thank you in advance for your help