[proaudio] jack and no audio

[meino.cramer@xxxxxx]

Hi,

this is my first post to this list.

I have installed the pro-audio overlay and I am using layman.

Installed are rosegarden, zynaddsubfx, jack/audio/connection-kit
(jackdbus), patchage

If I start patchage, zynaddsubfx, rosegarden and connect them to each
other and to system.playback everything works fine:
What is played with rosegarden reaches zynaddsubfx: The bottom sliders
of zynaddsubfx are moving.

But there is no sound.

Using Zynaddsubfx with -A (ignore jack, use alsa) produces sound. So
alsa seems to be working fine. Same goes for mplayer when not using
-ao jack.

May be jack is choosing the wrong audio hardware for the output? 
But how can I convince it to use the one of my motherboard and not
the other ones?

The systems /etc/modprobe.d/alsa.conf looks likei:
alias /dev/mixer snd-mixer-oss
alias /dev/dsp snd-pcm-oss
alias /dev/midi snd-seq-oss

# Set this to the correct number of cards.

# --- BEGIN: Generated by ALSACONF, do not edit. ---
# --- ALSACONF version 1.0.24.2 ---
alias char-major-116 snd
alias char-major-14 soundcore
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
alias snd-card-0 snd-hda-intel
alias sound-slot-0 snd-hda-intel
# --- END: Generated by ALSACONF, do not edit. ---


The audio devices are ("lspci -"v):

00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40)
	Subsystem: ASUSTeK Computer Inc. M4A89GTD PRO/USB3 Motherboard
	Flags: bus master, slow devsel, latency 64, IRQ 16
	Memory at f9ff8000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: [50] Power Management version 2
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd-hda-intel

01:06.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
	Subsystem: Avermedia Technologies Inc AverMedia AVerTV DVB-T 771
	Flags: bus master, medium devsel, latency 64, IRQ 21
	Memory at c7ffe000 (32-bit, prefetchable) [size=4K]
	Capabilities: [44] Vital Product Data
	Capabilities: [4c] Power Management version 2
	Kernel driver in use: bt878
	Kernel modules: bt878

02:00.1 Audio device: NVIDIA Corporation GF110 High Definition Audio Controller (rev a1)
	Subsystem: Micro-Star International Co., Ltd. Device 2384
	Flags: bus master, fast devsel, latency 0, IRQ 33
	Memory at fca7c000 (32-bit, non-prefetchable) [size=16K]
	Capabilities: [60] Power Management version 3
	Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
	Capabilities: [78] Express Endpoint, MSI 00
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd-hda-intel

09:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1)
	Subsystem: Micro-Star International Co., Ltd. Device 2304
	Flags: bus master, fast devsel, latency 0, IRQ 25
	Memory at fe97c000 (32-bit, non-prefetchable) [size=16K]
	Capabilities: [60] Power Management version 3
	Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
	Capabilities: [78] Express Endpoint, MSI 00
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd-hda-intel


How can I get sound?

Thank you very much in advance for any help!
Have a nice weekend!
Best regards,
mcc