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Date:	Sun, 05 Jul 2015 23:09:23 +0200
From:	Ronald Blaschke <mailing-lists AT rblasch DOT org>
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Subject:	Re: [ANNOUNCEMENT] Updated: xorg-server-1.17.1-5
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On 07/03/2015 01:28 AM, Jon TURNEY wrote:
> On 15/06/2015 20:08, Ronald Blaschke wrote:
>> On 06/02/2015 07:38 PM, Jon TURNEY wrote:
>>>
>>> The following packages have been updated in the Cygwin distribution:
>>>
>>> *** xorg-server-*1.17.1-5
>>
>> I think this update breaks XWin for me.  When starting any client (gvim,
>> emacs-X11), I get a broken window, sometimes empty, sometimes partially
>> filled.  I cannot click the content, the click just goes through to the
>> window below, which brings the bottom window up.  If I focus the broken
>> window (through the taskbar), I seem to be able to interact with the
>> program, e.g. after inserting something in gvim using the keyboard, the
>> title reflects this through the modified flag ('+').  But again, the
>> content stays empty.
>>
>> If I run XWin without multiwindow, the program (gvim or emacs) renders
>> just fine in the XWin window.
>>
>> If I revert back to 1.17.1-4, multiwindow works just fine as well.
> 
> Thanks for reporting this.
> 
> This is rather puzzling, as the change in 1.17.1-5 was not directly
> related to how windows are rendered.

Thank you very much for picking this up.

> Can you provide some more details?  e.g. an XWin.0.log so I can see if
> that shows anything unusual? Are these local X clients?

After quite some time looking, I think I have found the culprit.  I am
using UltraMon on my system.  It seems like the changes in 1.17.1-5
interact badly with the Window management feature [1].  The good news
is, this feature can be disabled by program.  After excluding XWin.exe,
everything is back to normal.  Sorry for the noise, but it's the first
time I have had a problem with either program, so it was hard to make
the connection.  I'll probably notify the UltraMon authors, to consider
excluding XWin by default.

Thanks,
Ron

[1] http://www.realtimesoft.com/ultramon/tour/windows.asp

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