zynaddsubfx won't work again after it was stopped

Bug #164818 reported by philippe guillaume on 2007-11-24
This bug affects 1 person
Affects Status Importance Assigned to Milestone
zynaddsubfx (Ubuntu)

Bug Description

When I shut zynaddsubfx down, if I start it again it won't produce any sound at all.
It happens also if my computer is waked ud .
And sometimes jack can't start again after having been stopped.

philippe guillaume (phi-gui) wrote :

Please forgive my english and my being approximative in the descriptions, I'm not a specialist in computers, and I'm neither a native english speaker.

Jaakko Sipari (jaakko-sipari) wrote :

This is a problem with the jack "driver" in zynaddsubfx. It also seems to loose jack connection on the first occuring xrun and after that also jack (in addition to zyn) has to be restarted before getting any sound from zynaddsubfx again. This is a known problem in zynaddsubfx but there are no real fixes for it. One patch ("jack zombification patch") exists which prevents zynaddsubfx from disconnecting from jack but some people say the results more clicks than it removes problems. For me the patch seemed to work ok.

One "fix" for the problem is to use very large "Frames/Periods" settings for Jack. When setting it to 1024 the problems seem to go away.

I'll test the zombification patch some more and maybe add the patch to this bug report. Having clicks with heavy load is not as bad as having zynaddsubfx disconnect from jack all the time.

Emmet Hikory (persia) on 2008-08-23
Changed in zynaddsubfx:
importance: Undecided → Low
status: New → Triaged
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