Will be grateful for any suggestions.

My soundcard as reported by lspci:

00:1f.3 Audio device: Intel Corporation Cannon Point-LP High Definition Audio Controller (rev 30)

I use the asoundrc below to route audio to both the analog output and the HDMI connector.

With Debian kernel 6.0.0-6-amd64 I get sound at both outputs. With version 6.0.1-10-amd64 there is no HDMI output.

pcm.hdmi_out { type hw card 0 device 7 } pcm.analog { type hw card 0 device 0 }

pcm.hdmi_dmix { type dmix ipc_key 1024 ipc_perm 0666 # allow other users slave.pcm "hdmi_out" slave { period_time 0 period_size 1024 buffer_size 4096 channels 2 # must match bindings } bindings { 0 0 1 1 } }

pcm.analog_dmix { type dmix ipc_key 2048 ipc_perm 0666 # allow other users slave.pcm "analog" slave { period_time 0 period_size 1024 buffer_size 4096 channels 2 # must match bindings } bindings { 0 0 1 1 } }

pcm.!default { type asym playback.pcm "out" }

# Multi pcm.out { type plug slave.pcm { type multi slaves { a { channels 2 pcm hdmi_dmix } b { channels 2 pcm analog_dmix } } bindings { 0 { slave a channel 0 } 1 { slave a channel 1 } 2 { slave b channel 0 } 3 { slave b channel 1 } } } ttable [ [ 1 0 1 0 ] # left -> a.left, b.left [ 0 1 0 1 ] # right -> a.right, b.right ] }