Re: jackd2 hanging after resume?

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Howdy my dear list,

I am still struggling with the problem described below. Is there any
other place I should ask for help about this?

Happy about any replies and hints!
P

* Peter P. <peterparker@xxxxxxxxxxxx> [2024-01-24 11:16]:
> Hi,
> 
> Running jackd2 on an Edirol UA-25 USB interface as
>  jackd -t2000 -dalsa -r44100 -p512 -n2 -Xseq -D -Chw:UA25 -Phw:UA25 -i2 -o2
> I can not get clients to connect after having resumed the computer from
> "systemctl suspend". 
> 
> Upon resuming, jackd reports
>  status error: No such device
>  ALSA: channel flush for playback failed (No such device)
>  JackAudioDriver::ProcessAsync: read error, stopping...
> and hangs.
> 
> Trying to use mpv or puredata with this locked server then throw the same messages:
> 
>  Cannot read socket fd = 13 err = Success
>  CheckRes error
>  JackSocketClientChannel read fail
>  Cannot open mpv client
>  JackShmReadWritePtr1::~JackShmReadWritePtr1 - Init not done for -1, skipping unlock
>  JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
>  JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
> 
> Nevertheless, qjackctl indicates a running server but throws
>  Cannot create new client
>  JackPosixProcessSync::LockedTimedWait error usec = 5000000 err =
>  Connection timed out
>  Driver is not running
>  Cannot create new client
> 
> journalctl/dmesg show that the USB sound card is discovered as a new
> device after resuming from the suspend state.
> 
> Stopping the server takes some time then, throwing:
>  ALSA: channel flush for playback failed (No such device)
>  Cannot stop driver
>  port deleted: UA-25:midi/playback_1
>  port deleted: UA-25:midi/capture_1
>  Released audio card Audio2
>  audio_reservation_finish
>  11:05:51.251 JACK was stopped
> 
> This problem does not exist when using jackd1.
> 
> The computers internal soundcard (intel-hda) survives resuming from
> suspend with jackd2.
> 
> What can I try next?
> 
> Thanks!
> Peter
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