linuxaudio.org

Quoting "Jari Suominen" :
> Sampo Savolainen kirjoitti:

quoted text
>> To diagnose the issue, we would need to see the exact error message.

>> Meanwhile, you could try checking whether the limits you've put in

>> limits.conf are actually in effect.

>

> This is the messages printed in messages window of qjackctl:

>

> -- snip --

>

> But the thing I'm also interested is why same Jack settings work when

> running qjackctl as sudo?

Those messages look entirely ok, except for jackd just crashing! Very

weird. Can you try launching jackd with the same parameters from the

command line? Maybe that will give you a bit more information.
It seems that something has gone awry with the installation / system.

Maybe some files jackd needs are owned by root and not writable for

the user?
You can always strace jackd:

     strace -f /usr/bin/jackd [parameters] >& logfile
(I recommend not using realtime mode when stracing. But you might need

to do that if jackd crashes only when in realtime mode.)
The log will tell you all system operations the process does. At the

end, just before the crash, you should see some syscalls go awry. They

are most likely permission related as it works as root, so look for

open() calls in particular.
   Sampo
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