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Subject:	Re: XWin.exe not running any more.
To:	Thomas Schweikle <tschweikle AT gmail DOT com>, cygwin AT cygwin DOT com
References:	<CA+rGx5cfyNN9AhBwL-T4xcns5Go6JvOqzomUTx2fx-HRRUZ2Qg AT mail DOT gmail DOT com>
From:	Jon TURNEY <jon DOT turney AT dronecode DOT org DOT uk>
Reply-To:	cygwin AT cygwin DOT com
Message-ID:	<55F2C735.2030507@dronecode.org.uk>
Date:	Fri, 11 Sep 2015 13:21:09 +0100
User-Agent:	Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0
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In-Reply-To:	<CA+rGx5cfyNN9AhBwL-T4xcns5Go6JvOqzomUTx2fx-HRRUZ2Qg@mail.gmail.com>

On 05/09/2015 13:14, Thomas Schweikle wrote:
> Since yesterday starting "XWin.exe -multiwindow -clipboard" starts,
> but stops after short. It doesn't keep running and X11 is not usable.
>
> After starting I only see:
> Welcome to the XWin X Server
> Vendor: The Cygwin/X Project
> Release: 1.17.2.0
> OS: CYGWIN_NT-6.1 nc403-muc 2.2.1(0.289/5/3) 2015-08-20 11:42 x86_64
> OS: Windows 7 Service Pack 1 [Windows NT 6.1 build 7601] (Win64)
> Package: version 1.17.2-3 built 2015-08-25

Do you know what version you updated from?

> [   137,093] glWinSelectGLimplementation: Loaded 'cygnativeGLthunk.dll'

This looks like the xserver is crashing whilst trying to initialize WGL.

You might try adding '-nowgl' to the XWin options.

You may find that updating your graphics driver, if possible, resolves this.

(Since this seems to happen with some graphics drivers, there is code in 
the X server which attempts to catch crashes in WGL initialization and 
turn WGL off, but that doesn't seem to be getting control in this case)

-- 
Jon TURNEY
Volunteer Cygwin/X X Server maintainer

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