[linux-audio-user] Fst + Crystal VST

Yves Potin yves at jazzcomputer.org
Fri Dec 1 06:37:27 EST 2006

        There seems to be a persistant issue with Crystal VST and Fst.
        First, this appears at the launch of fst (with or without -r, with
or without wineserver running) : 

cannot lock down memory for RT thread (Ne peut allouer de la memoire)

        The synth first seems to work perfectly, with audio and MIDI in
jack. Then it quickly segfaults when using the GUI or just when playing
some notes on vkeybd, at a moment or another, with this error message : 

The program 'fst' received an X Window System error.
This probably reflects a bug in the program.
The error was 'RenderBadPicture (invalid Picture parameter)'.
  (Details: serial 24972 error_code 191 request_code 156 minor_code 7)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error()

²       I have recompiled wine with or without gif, glut, opengl, gif,
lcms, dbus and hal, and I have tried with or with DRI activated in
xorg (free driver, ATI video card, dual monitor setup). Always the same. 

        There is a recent bug report on the wine bugtracker here : 
and someone asked the same question sometime ago on this mailing list. 
        But on the other hand there are many web sites where people report
that this synth works perfectly with wine / fst.
        - Would someone have some kind of workaround ?
        - Would there be someone who uses Crstal vst sucessfully and could
tell about his setup, especially his video card and drivers, xorg / xfree
version, if he uses dual monitors and if DRI is activated ?
        - Did someone contact the author of Crystal to ask him about a
native Linux version and / or a free version of his software's source
code ? I could do it, but maybe there's a history about that I'm not aware
        Thanks for any advice or help, 


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