On Monday 03 August 2015, you wrote: > On Sun, Aug 2, 2015 at 4:26 PM, Gerhard Zintel <gerhard.zintel@xxxxxx> wrote: > > jackd watchdog: timeout - killing jackd > > Aborted (core dumped) > > You're device is likely configured incorrectly, so that JACK never > actually gets woken up by the device, times out and deliberately > kills itself. > > You need to use alsamixer or an equivalent to select the correct > capture source on the device. This was a relatively common issue > with Intel HDA chipsets a few years ago - I haven't been hearing > about it as much recently. Thanks a lot Paul for the pointer Short story: jackd is running again in duplex mode. Case solved. Nonetheless: If no capture source is selected in alsamixer, why does capture only mode work in jackd without problems and times out as soon as duplex mode is selected? Strange. Furthermore: I tried to tune the settings in alsamixer before bothering the list. For weeks I tried all permutations in alsamixer and qjackctl without success. Today, after your response, I opened alsamixer again, two devices (Capture and Capture1) have been in Capture mode. I switched off both, switched only Capture into capture mode and jackd started in duplexmode without problems. Out of curiosity I tried to recreate the old behavior - no chance, it's not longer possible. Even if I switch on / off capture mode for both Capture devices and chose different hardware interfaces in qjackctl (hw:0 = HDA Intel PCA, hw:0.0 = VT2020 analog) jackd starts trouble-free for all combinations. I do not really know the culprit. Alsa and jackd are still black boxes to me. Again, thanks a lot Gerhard _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user