Jack1 is run as following export JACK_PROMISCUOUS_SERVER= umask 0 jackd -dalsa JACK_PROMISCUOUS_SERVER is exported in environment. Now programs using jack don't show any errors, but there is no sound and jackd gives the following errors: мар 24 17:25:41 nixos jackd[15035]: jackd 0.125.0 мар 24 17:25:41 nixos jackd[15035]: Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn and others. мар 24 17:25:41 nixos jackd[15035]: jackd comes with ABSOLUTELY NO WARRANTY мар 24 17:25:41 nixos jackd[15035]: This is free software, and you are welcome to redistribute it мар 24 17:25:41 nixos jackd[15035]: under certain conditions; see the file COPYING for details мар 24 17:25:41 nixos jackd[15035]: JACK compiled with System V SHM support. мар 24 17:25:41 nixos jackd[15035]: loading driver .. мар 24 17:25:41 nixos jackd[15035]: creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit мар 24 17:25:41 nixos jackd[15035]: configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods мар 24 17:25:41 nixos jackd[15035]: ALSA: final selected sample format for capture: 32bit integer little-endian мар 24 17:25:41 nixos jackd[15035]: ALSA: use 2 periods for capture мар 24 17:25:41 nixos jackd[15035]: ALSA: final selected sample format for playback: 32bit integer little-endian мар 24 17:25:41 nixos jackd[15035]: ALSA: use 2 periods for playback мар 24 17:26:23 nixos jackd[15035]: subgraph starting at ADLplug timed out (subgraph_wait_fd=9, status = 0, state = Triggered, pollret = 0 revents = 0x0) мар 24 17:26:23 nixos jackd[15035]: pp: cannot clean up byte from graph wait fd - no data present мар 24 17:26:23 nixos jackd[15035]: **** alsa_pcm: xrun of at least 42199.144 msecs мар 24 17:26:23 nixos jackd[15035]: subgraph starting at ADLplug timed out (subgraph_wait_fd=9, status = 0, state = Triggered, pollret = 0 revents = 0x0) мар 24 17:26:23 nixos jackd[15035]: pp: cannot clean up byte from graph wait fd - no data present