Re: [LAU] Behringer UMC1820 suddenly stopped working with JACK2 (after re-install)

David Runge wrote on 06.05.2019 23:20:
> Hi Niklas,
>
> On 2019-05-06 22:24:33 (+0200), nik@parkellipsen.de wrote:
> > jackd -P98 -dalsa -dhw:2 -p512 -n3 -o2 -r44100
> Add some more verbosity with `-v`
>
> > ALSA: use 3 periods for capture
> > ALSA: final selected sample format for playback: 24bit little-endian in
> 3bytes
> > format
> > ALSA: cannot set channel count to 2 for playback
> > ALSA: cannot configure playback channel
> > Released audio card Audio2
> > audio_reservation_finish
> > Cannot initialize driver
> > JackServer::Open failed with -1
> > Failed to open server
> And you're sure it is not already running and/or being used by something
> else (e.g. pulseaudio)?

Hi David,

I don't have pulseaudio installed, so I'm pretty sure that can be ruled out.
There's no other program running that could block the device, as far as I can see.

The only two other things I notices are the strange sample format and the this two messages in dmesg that
appear when switching the device on after attaching (not when attaching the already switched-on device)

[ 37.512914] usb 1-2: device descriptor read/64, error -71
[ 37.742890] usb 1-2: device descriptor read/64, error -71

-v says:

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
no message buffer overruns
no message buffer overruns
no message buffer overruns
JACK server starting in realtime mode with priority 98
self-connect-mode is "Don't restrict self connect requests"
Jack: JackPosixThread::StartImp : create non RT thread
Jack: JackPosixThread::ThreadHandler : start
Jack: playback device hw:2
Jack: capture device hw:2
Jack: apparent rate = 44100
Jack: frames per period = 512
Jack: JackDriver::Open capture_driver_name = hw:2
Jack: JackDriver::Open playback_driver_name = hw:2
Jack: Check protocol client = 8 server = 8
Jack: JackEngine::ClientInternalOpen: name = system
Jack: JackEngine::AllocateRefNum ref = 0
Jack: JackLinuxFutex::Allocate name = jack_sem.1000_default_system val = 0
Jack: JackEngine::NotifyAddClient: name = system
Jack: JackGraphManager::SetBufferSize size = 512
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
audio_reservation_init
Acquire audio card Audio2
creating alsa driver ... hw:2|hw:2|512|3|44100|0|2|nomon|swmeter|-|32bit
configuring for 44100Hz, period = 512 frames (11.6 ms), buffer = 3 periods
ALSA: final selected sample format for capture: 32bit integer little-endian
ALSA: use 3 periods for capture
ALSA: final selected sample format for playback: 24bit little-endian in 3bytes format
ALSA: cannot set channel count to 2 for playback
ALSA: cannot configure playback channel
Jack: JackDriver::Close
Jack: JackConnectionManager::DirectDisconnect last: ref1 = 0 ref2 = 0
Jack: JackGraphManager::DisconnectRefNum cur_index = 0 ref1 = 0 ref2 = 0
Jack: JackEngine::ClientInternalClose ref = 0
Jack: JackEngine::ClientCloseAux ref = 0
Jack: JackGraphManager::RemoveAllPorts ref = 0
Released audio card Audio2
audio_reservation_finish
Jack: ~JackDriver
Cannot initialize driver
Jack: no message buffer overruns
Jack: JackPosixThread::Stop
Jack: JackPosixThread::ThreadHandler : exit
JackServer::Open failed with -1
Jack: Succeeded in unlocking 82280346 byte memory area
Jack: JackShmMem::delete size = 0 index = 0
Jack: ~JackDriver
Jack: Succeeded in unlocking 1187 byte memory area
Jack: JackShmMem::delete size = 0 index = 1
Jack: Cleaning up shared memory
Jack: Cleaning up files
Jack: Unregistering server `default'
Failed to open server

Best,
Niklas
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Received on Tue May 7 12:15:01 2019