Cannot start jack using qjackctrl via dbus when playback only option is needed

[Roger James]

My audio hardware requires the playback only option to be specified to successfully start jackd. However I cannot start jackd with this option via qjackctrl unless dbus startup option is disabled. I am guessing that qjacktrl causes a dbus jackd with default parameters to be started (and stopped) before it tries to start the one with the playback only parameter. Starting a jackd without the playback only parameter always results in a server that hang and doe not respond to any client requests. Catch 22.

Ubuntu 11.10
jackd2 1.9.7~dsfg-1ubuntu2
qjackctl 0.3.8-1

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: jackd2 1.9.7~dfsg-1ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Mon Nov 21 01:32:38 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: jackd2
UpgradeStatus: Upgraded to oneiric on 2011-10-15 (36 days ago)

[Roger James (rogerjames99)]

Sorry about the crazy spelling, I think my s key must have gone missing! The next to the last line should read.

"Starting a jackd without the playback only parameter always results in a server that hangs and does not respond to any client requests."