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Subject:	Re: X11 becomes unresponsive with complex client programs
References:	<3dcb5e0d-45bd-cb01-ac46-1a9c36785108 AT pobox DOT com>
Cc:	David Arnstein <arnstein AT pobox DOT com>
To:	cygwin AT cygwin DOT com
From:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Message-ID:	<41a04977-999a-728b-1e0d-4dc40c634ac3@dronecode.org.uk>
Date:	Mon, 16 Jan 2017 14:09:09 +0000
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In-Reply-To:	<3dcb5e0d-45bd-cb01-ac46-1a9c36785108@pobox.com>

On 14/01/2017 01:38, David Arnstein wrote:
> My cygwin installation can display simple X11 clients such as xterm. A
> complex client such as git-cola, launched from a remote RedHat Linux
> machine, will cause all X11 windows under cygwin to become unresponsive.
> Windows Task Manager says "not responding."
>
> This problem occurs with recent releases of Cygwin/X11. The attached
> cygcheck.out indicates the last X11 version that works well: 1.18-4.1.
> All other cygwin packages are up to date.

Thanks for reporting this problem.

Unfortunately, I couldn't reproduce it.

However, I suspect this may be caused by switching to the smart 
scheduler by default in xorg-server 1.19.0-1.

So, the first thing I'd suggest you try is adding -dumbSched to the X 
server options to see if this makes a difference (e.g. 'startxwin -- 
-dumbSched'

-- 
Jon Turney
Volunteer Cygwin/X X Server maintainer

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