Re: Errors: "Duplicate invocation" and can't find dll's

[Igor Pechtchanski <pechtcha at cs dot nyu dot edu>]

On Thu, 7 Jul 2005, Angus Veitch wrote:

> I have just installed the X components of Cygwin and am hoping to
> eventually connect with XDMCP to my Linux machine.  But I'm having some
> serious teething problems.
>
> First, XWin seems to be having difficulty finding the dlls.  If I run
> "XWin -query [computer name]" I First I get an error message saying that
> it can't find cygwin1.dll.  If I copy that dll file from the cygwin\bin\
> directory into C:\cygwin\usr\X11R6\bin, the error message changes to
> another dll.  If I copy that dll to the X11R6\bin directory, it moves
> onto yet another one that it can't find.

NO, NO, NO!  Please don't do that.  Remove the DLLs you copied and instead
add C:\cygwin\bin to your PATH.

> If I run "startxwin.bat" instead, I don't get the dll error.

That's because startxwin.bat adds C:\cygwin\bin to the PATH.

> But when I try to run startx, I get:
>
> > winCheckDisplayNumber - Cygwin/X is already running on display 0
> >
> > Fatal server error:
> > InitOutput - Duplicate invocation on display number: 0.  Exiting.

And what's cryptic about that message?  You've already run X on display 0
-- use display 1 if you want another instance.

> If I try "startxdmcp.bat", I get a similar result:
>
> > mkdir: Cannot create /tmp/.X11-unix with root ownership
> > winCheckDisplayNumber - Cygwin/X is already running on display 0
> >
> > Fatal server error:
> > InitOutput - Duplicate invocation on display number: 0.  Exiting.

Ditto.

> The supposed cause of this error is that I am running two sessions of
> XWin, but that is simply not the case.  I get the same results if I add
> :1 to the batch files.

Is someone else running X on that machine?  Are you using terminal
services?

> Any suggestions?

Hmm, what does "ps -W | grep -i xwin" show?

> PS.
> This may be relevant: When I installed Cygwin/X, selected all of the X
> components, rather than just the ones that are automatically selected by
> the x-org base package or whatever it was called.  Is this bad?

Shouldn't be.  Please see the Cygwin problem reporting guidelines at
<http://cygwin.com/problems.html> for the right way of reporting your
installation information (particularly the part about attaching the output
of "cygcheck -svr").
	Igor
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