Duncan Murdoch wrote: > The rgl package currently crashes R when running under Xvfb (the > "virtual frame buffer" server), at least on MacOSX. It makes sense that > it shouldn't be able to work there (it needs interactivity), but I don't > know how to detect the problems before they cause the crash. > > Currently the error happens the first time you try to open an rgl > window; when rgl calls XCreateWindow R crashes with the error message > > X Error of failed request: BadMatch (invalid parameter attributes) > Major opcode of failed request: 1 (X_CreateWindow) > Serial number of failed request: 28 > Current serial number in output stream: 29 > > I've checked and as far as I can see all the parameters we're sending to > XCreateWindow are valid, but I might have missed something: I don't > know much about X11 programming. (The call is > > ::Window xwindow = XCreateWindow( > xdisplay, RootWindow(xdisplay, DefaultScreen(xdisplay)), > 0, 0, 256, 256, 0, > xvisualinfo->depth, > InputOutput, > xvisualinfo->visual, > valuemask, > &attrib > ); > > but without context that's probably not worth much to others.) > > > Are there any experienced X11 programmers out there who can suggest what > to do next?
I have now committed some changes to rgl to avoid the crash -- it converts the above error into an R error. I think to actually fix it, I'd need to debug the MacOSX Xvfb code to see exactly what it's complaining about. I don't know where to find that source, so this isn't likely to happen soon. Are there any X11/MacOSX programmers going to the UseR! meeting in August? I'd guess if I could sit down with someone who had experience with both of those we could track this down fairly quickly, but I don't think I'll be able to do it without that. Duncan Murdoch ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel