Duncan Murdoch wrote: > 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.) >> >> >> Just a hunch: Is it possible that "attrib" contains uninitialized variables or is getting overwritten with random data?
>> 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 > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
