You won't believe it First: It's a Heisenbug. When I compile Qtractor in DEBUG mode then it goes away. So probably a race condition, and not neccesarily in Qtractor. I have several tracks with Linuxsampler. In one track I use a kontrabass sfz soundfont. When I use another soundfont then the bug goes away, too. It's the same .deb binary package of Linuxsampler and Libgig as on the other machines. I'l investigate what's so special with this soundfont. No idea why it happens only on the Trixie machine. Maybe I'll compile linuxsampler there. Reply
First: It's a Heisenbug. When I compile Qtractor in DEBUG mode then it goes away. So probably a race condition, and not neccesarily in Qtractor.
I have several tracks with Linuxsampler. In one track I use a kontrabass sfz soundfont. When I use another soundfont then the bug goes away, too.
It's the same .deb binary package of Linuxsampler and Libgig as on the other machines.
I'l investigate what's so special with this soundfont.
No idea why it happens only on the Trixie machine. Maybe I'll compile linuxsampler there.