[LAU] Jack fails in QJackCtl but not in command line

[Ralf Mardorf]

>> jackd starts on hw:5,0 as playback and
>>                 hw:5,1 as capture withQJackCtl and Gladish.

JFTR what kind of device is hw:5?
Why do you need to use it that way?

Not really important is what hw:0, hw:1, hw:2, hw:3, hw:4 and perhaps
hw:6 to hw:n are, anyway, please show the outputs of

$ aplay -l
$ arecord -l
$ amidi -l

it might be or might not be helpful to get an idea of the setup you're
using, but it doesn't harm.