Hey Folks, I have a problem with Jack running on my Rapi 3: I start the server like This: jackdmp 1.9.12 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2016 Grame. Copyright 2016-2017 Filipe Coelho. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK server starting in realtime mode with priority 10 self-connect-mode is "Don't restrict self connect requests" Jack: JackPosixThread::StartImp : create non RT thread Jack: JackPosixThread::ThreadHandler : start Jack: capture device hw:1 Jack: playback device hw:0 Jack: apparent rate = 32000 Jack: frames per period = 128 Jack: JackDriver::Open capture_driver_name = hw:1 Jack: JackDriver::Open playback_driver_name = hw:0 Jack: Check protocol client = 8 server = 8 Jack: JackEngine::ClientInternalOpen: name = system Jack: JackEngine::AllocateRefNum ref = 0 Jack: JackPosixSemaphore::Allocate name = jack_sem.1000_default_system val = 0 Jack: JackEngine::NotifyAddClient: name = system Jack: JackGraphManager::SetBufferSize size = 128 Jack: JackConnectionManager::DirectConnect first: ref1 = 0 ref2 = 0 Jack: JackGraphManager::ConnectRefNum cur_index = 0 ref1 = 0 ref2 = 0 Jack: JackDriver::SetupDriverSync driver sem in flush mode creating alsa driver ... hw:0|hw:1|128|6|32000|8|0|nomon|swmeter|-|32bit configuring for 32000Hz, period = 128 frames (4.0 ms), buffer = 6 periods ALSA: final selected sample format for capture: 32bit integer little-endian ALSA: use 6 periods for capture ALSA: final selected sample format for playback: 32bit integer little-endian ALSA: use 6 periods for playback And after running an Hour, out of nothing, I got this error: Jack: JackSocketServerChannel::Execute : fPollTable i = 1 fd = 8 Jack: JackRequest::Notification Jack: JackEngine::ClientNotify: no callback for notification = 3 Jack: JackEngine::ClientNotify: no callback for notification = 3 Jack: JackExternalClient::ClientNotify ref = 2 client = MHA name = MHA notify = 3 Jack: JackSocketServerChannel::Execute : fPollTable i = 2 fd = 9 Jack: JackSocketServerChannel::Execute : fPollTable i = 1 fd = 8 Jack: JackRequest::Notification Jack: JackEngine::ClientNotify: no callback for notification = 3 Jack: JackEngine::ClientNotify: no callback for notification = 3 Jack: JackExternalClient::ClientNotify ref = 2 client = MHA name = MHA notify = 3 Jack: JackSocketServerChannel::Execute : fPollTable i = 2 fd = 9 Jack: Process: graph not finished! Jack: Process: waiting to switch delta = 3989 JackEngine::XRun: client = MHA was not finished, state = Running Jack: JackSocketServerChannel::Execute : fPollTable i = 1 fd = 8 JackAudioDriver::ProcessGraphAsyncMaster: Process error Jack: JackRequest::Notification Jack: JackEngine::ClientNotify: no callback for notification = 3 Jack: JackEngine::ClientNotify: no callback for notification = 3 Jack: JackExternalClient::ClientNotify ref = 2 client = MHA name = MHA notify = 3 Jack: JackSocketServerChannel::Execute : fPollTable i = 2 fd = 9 Jack: **** alsa_pcm: xrun of at least -4232311.296 msecs Jack: ALSA XRun wait_status = 0 Jack: JackSocketServerChannel::Execute : fPollTable i = 1 fd = 8 Jack: JackRequest::Notification Jack: JackEngine::ClientNotify: no callback for notification = 3 Jack: JackEngine::ClientNotify: no callback for notification = 3 Jack: JackExternalClient::ClientNotify ref = 2 client = MHA name = MHA notify = 3 Jack: JackSocketServerChannel::Execute : fPollTable i = 2 fd = 9 Jack: **** alsa_pcm: xrun of at least -4232315.904 msecs Jack: ALSA XRun wait_status = 0 Jack: JackSocketServerChannel::Execute : fPollTable i = 1 fd = 8 Jack: JackRequest::Notification Jack: JackEngine::ClientNotify: no callback for notification = 3 Jack: JackEngine::ClientNotify: no callback for notification = 3 Jack: JackExternalClient::ClientNotify ref = 2 client = MHA name = MHA notify = 3 Jack: JackSocketServerChannel::Execute : fPollTable i = 2 fd = 9 Jack: **** alsa_pcm: xrun of at least -4232320.256 msecs Jack: ALSA XRun wait_status = 0 . . . I tried several times with different configs, bus it always crushes like this. With 4 Periods after around 30min, with this 6 periods after an hour. Does anyone has an idea what the reason for this behavior could be? Thanks in advance! Moritz