[GEM-dev] [ pd-gem-Bugs-2724600 ] GEM from pd-extended interfers with jack in realtime mode

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Bugs item #2724600, was opened at 2009-04-01 09:09
Message generated for change (Tracker Item Submitted) made by crinimal
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: crinimal (crinimal)
Assigned to: Nobody/Anonymous (nobody)
Summary: GEM from pd-extended interfers with jack in realtime mode

Initial Comment:
I can reproduce following bug on 2 different versions of ubuntu:

Fresh install of ubuntu, allow realtime for users, set up /etc/security/limits to audio group for real time, then reboot and start pd-extended as user: '/usr/bin/pd -jack -rt -channels 2' from command line. this works only _one_ time. after closing pd and starting pd again pd zombifies or only says repeatedly "watchdog: signaling pd..."

i could track this down to GEM by removing everything else from .pdsettings The bug occurs only when both jack and pd are run with realtime priority and when specifying "channels". using 'pd -rt -jack' (without channels setting) works - Setting up jack in the pd menu is no problem then.

Ubuntu Intrepid 2.6.27-3-rt :
Pd version 0.41-4extended-20090323
compiled 11:51:58 Mar 23 2009
jack started with: jackd -R -d firewire

Ubuntu Jaunty, rt kernel:
Pd version 0.41-4extended-20090331
jack started with jackd -R -d alsa

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=507079&aid=2724600&group_id=64325