On 2019-03-26 09:44, Jörn Nettingsmeier wrote:
On 3/26/19 5:28 AM, liebrecht@grossmann-venter.com wrote:
After jack is installed, I try to start it through mixbus which is 
about the only application I found that can actually start jack. I 
used mixbus for about 6 months with jack on another distro. qjacktcl 
does nothing but parse irrelevance and promisses so I dont use it 
anymore.
That remark is bullshit and shows that you really need to change the
way you're thinking about problem solving.

Sorry I disagree, qjcakctl has given me nothing but trouble and still 
does.
It goes much better without it.
All it arguably does is to formulate a jack string....which the user 
should do on command line anyway, and then output mystery log errors 
which are substandard to reading the logs yourself.
I have never found any constructive use for it other than "feelgood".
Mixbus worked great once I removed qjackctl on my previous system.
qjackctl was single most annoying interference problem.

Simplify the problem.
First, look at aplay -L to see if hw:VSL,0 is alive and well.

As I reported already in another post it is recognised.

Now, start jack on the command line, starting with the paramters
mixbux helpfully suggests:

jackd -t 200 -p 2048 -R -T -d alsa -n 2 -r 48000 -p 128 -d hw:VSL,0

It should fail in the same way you described above. If not, there is
something fishy in the way mixbus starts jackd.

As already reported, mixbus starts jack and jack runs IFF I dont start 
jack with qjackctl. Once qjackctl started jack, mixbus wont work. Mixbus 
starts jack with a string they disclose in the terminal output and it 
works.

According to patchage as I reported in a previous post, mixxbus is 
connected to jack, but I get no signals from jack for the 1818vsl inputs 
in mixbus.

-n2 p128 looks like a pretty aggressive timing for a multichannel
interface. Try -n3 for a start, and -p1024, then gradually lower the
latency, but only if you really need it.

I know I am just trying my documented default settings that worked 
perfectly before.
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