I am writing some code using OpenGL, and when run under Xvfb on MacOS it
dies, 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: 17
Current serial number in output stream: 19
I think MacOS uses the XFree86 version of Xvfb, but my first question is how can I tell for sure, and how do I determine which version I've got?
Xvfb on other platforms (including Cygwin, I normally work in Windows) is fine, but I've no idea how to tell version numbers.
Duncan Murdoch
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