Re: Debugging Xvfb

Duncan Murdoch <murdoch@xxxxxxxxxxxx> · Thu, 27 Sep 2007 08:28:22 -0400

Marc Aurele La France wrote:

On Tue, 25 Sep 2007, Duncan Murdoch wrote:

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

There are a number of different reasons for which XCreateWindow() would 

return BadMatch.  Check the man page.

I have rebuilt X from XFree86 version 4.7.0 and the error has gone 

away.  Originally the last line of man Xvfb was

X Version 11                      Release 6.6                          

XVFB(1)

but now it says

XFree86                          Version 4.7.0                         

XVFB(1)

So this looks like it's probably a bug in the Xvfb that Apple 

distributes, and the bug isn't present in XFree86 4.7.0.  Still, if I 

could I'd like to try to work around the bug:  any idea where I'd find 

the source for

the original Xvfb, so I could try to determine what it's complaining about?

Duncan Murdoch
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