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From: "Kunz, Christopher L" <clkunz AT sandia DOT gov>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: RE: [EXTERNAL] Re: startxwin - xinit unable to connect to X server
Date: Fri, 15 May 2015 17:36:50 +0000
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References: <4a3f92951e894d9abcc0f184ad983ba1 AT ES12AMSNLNT DOT srn DOT sandia DOT gov> <55561D71 DOT 4020308 AT dronecode DOT org DOT uk>
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After installing the 64 bit version of Cygwin, I don't experience this problem.

Backtrace output:

$ gdb --args /usr/bin/Xwin -multiwindow
GNU gdb (GDB) 7.8
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-cygwin".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/Xwin...(no debugging symbols found)...done.
(gdb) handle SIGSYS nostop
Signal        Stop      Print   Pass to program Description
SIGSYS        No        Yes     Yes             Bad system call
(gdb) r
Starting program: /usr/bin/Xwin -multiwindow
[New Thread 8216.0x1470]
[New Thread 8216.0x22f8]
[New Thread 8216.0x1f34]
[New Thread 8216.0x1f70]
[New Thread 8216.0x1e90]
[New Thread 8216.0x2374]
gdb: unknown target exception 0x80000001 at 0x5dd96d61

Program received signal ?, Unknown signal.
[Switching to Thread 8216.0x2374]
0x5dd96d61 in sysfer!FirstHookFunc ()
   from /cygdrive/c/Windows/SysWOW64/SYSFER.DLL
(gdb) bt full
#0  0x5dd96d61 in sysfer!FirstHookFunc ()
   from /cygdrive/c/Windows/SysWOW64/SYSFER.DLL
No symbol table info available.
#1  0x00000000 in ?? ()
No symbol table info available.
(gdb)

Thanks.

-----Original Message-----
From: Jon TURNEY [mailto:jon DOT turney AT dronecode DOT org DOT uk] 
Sent: Friday, May 15, 2015 09:23
To: Kunz, Christopher L
Cc: cygwin AT cygwin DOT com
Subject: [EXTERNAL] Re: startxwin - xinit unable to connect to X server

On 13/05/2015 19:40, Kunz, Christopher L wrote:
> After updating to the latest Cygwin distribution, I can no longer connect to X server. When I run startxwin (on a fresh Cygwin install), I get the following errors:
>
> xinit: giving up
> xinit: unable to connect to X server: Connection refused
> xinit: server error
>
> The XWin.#.log looks okay, I think (see attached).  I've set DISPLAY to :0.0.

It seems that the X server is crashing while it's still starting up.

I'm afraid I can't reproduce this problem.

If possible, could you follow the "Generating a backtrace when the X server is crashing at startup" instructions at [1], which might shed some light on what is going wrong...

[1] http://x.cygwin.com/devel/backtrace.html

--
Jon TURNEY
Volunteer Cygwin/X X Server maintainer