Jack audio does not work with lucid distro

[Jeff Tincher]

Binary package hint: ubuntu-docs

Jack audio, including qjackctl, does not work on any distribution using lucid 10.04 alpha 3. I've tried every possible way to setup jack with no luck. Continues to stop. I use Jack with Rosegarden for my music. Without Jack, Rosegarden is useless. Is there plans to create a fix?

[Alex Wardle (awardle)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have the correct package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage. I have classified this bug as a bug in jack

When reporting bugs in the future please use apport, either via the appropriate application's "Help -> Report a Problem" menu or using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[William L. Blackburn III (blackburnw)]

i think this might be a mistake, because it works on the Beta release. I just started using JACK with this distro and it works good. I use lucid 64 and I have added a low latency kernel. The kernel is so I can enable real-time support for jack. :) Maybe it didnt work with the alpha, but I am pretty sure that its working now. maybe this bug should be removed.

[era (era)]

Seems to me that it refuses to run without a custom kernel. It asks at setup time whether or not to try to run as real-time, but even though I answered no, it now complains when I try to start it:

lvcid$ jackd
jackd 0.118.0
Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details

JACK is running in realtime mode, but you are not allowed to use realtime scheduling.
Please check your /etc/security/limits.conf for the following lines
and correct/add them:

  @audio - rtprio 100
  @audio - nice -10

After applying these changes, please re-login in order for them to take effect.

You don't appear to have a sane system configuration. It is very likely that you
encounter xruns. Please apply all the above mentioned changes and start jack again!

[era (era)]

Now I ran sudo dpkg-reconfigure jackd and allowed it to muck with my /etc/security/limits.d/audio.conf but it still throws the same error message. I don't want to log out so I cannot at the moment confirm whether a reboot would help, but jackd continues to refuse to run in either a slave sudo login in an xterm or a new guest X session.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[era (era)]

Reassigning from "jack" to "jack-audio-connection-kit".