X-Recipient: archive-cygwin AT delorie DOT com
DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:from:date:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; q=dns; s=
	default; b=F2ZEff7NDLncZgaqg9lee+Lob2CZkoiFR+MjrnjWREG0Og5qejrjz
	KEN95CT8nz7wz68Oj2NgOCFOVaagdWXoFOq+kDN/SN0tR/U6FI0GEqnlMI3+UWZv
	EOgskRb9G+yZU73MTt3vHzFQwx2sevJbAEr5KfZOwdt7afk0Dl7N6U=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:from:date:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; s=default;
	 bh=ti+sIQbfPChz2br1WPgSx9oI5r8=; b=X/I6Fzn9hzsgMR86VY5yvGKt+Usb
	ZxtYCgvlXRecsZL1Yr+0afhFJ6t13jV6jTN/jetMwofdeln0FEYrbjNM5a92/jgU
	NOLlwGYpFgyt1BDeIIKQ6aqGqhx4VUiwQiGUSZnHxZxgi3MHreOOIFhhgmeX9Cm7
	9GsMS0fY/CkwT3s=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-0.6 required=5.0 tests=AWL,BAYES_20,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.2 spammy=grey, H*i:sk:e04e18e, Hx-languages-length:2168, H*MI:sk:e04e18e
X-HELO: nm24-vm3.access.bullet.mail.gq1.yahoo.com
X-Yahoo-SMTP: U8RK55aswBDPjgunPvbxVLWrXc7UwxlJ4p.JUpXvGcy4
From: jeff_schenck AT att DOT net
Date: Tue, 31 Jan 2017 21:22:35 -0800
To: cygwin AT cygwin DOT com
Subject: Re: X colormap problem when viewed via Microsoft Remote Desktop
Message-ID: <20170201052235.GA2028@anarchy.local>
Reply-To: Jeff Schenck <schenck AT alum DOT mit DOT edu>
References: <20170129031635 DOT GA2650 AT anarchy DOT local> <e04e18e9-aae9-8628-d7e3-051654a59f43 AT dronecode DOT org DOT uk>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Disposition: inline
In-Reply-To: <e04e18e9-aae9-8628-d7e3-051654a59f43@dronecode.org.uk>
User-Agent: Mutt/1.5.23 (2014-03-12)

Jon, thanks for your suggestion.  Using the -nocompositewm option
fixed my problem.  If you'd still like a screenshot, I can send one if
the mailing list doesn't mind big attachments.  Basically, it looks
like the color map is wrong.  My terminal window background is
brownish-green instead of dark grey and font edges are fuzzy and
multicolored.  A plot window I created has incorrect colors but the
plot is legible.

Thanks!
Jeff

----- On Mon, Jan 30, 2017 at 05:54:07AM PST, Jon Turney wrote:

>On 29/01/2017 03:16, jeff_schenck AT att DOT net wrote:
>>After a fairly recent update of cygwin, I now find that all my X
>>windows (xterm, emacs, etc.) have color and font problems.  Non-x
>>terminal windows are fine.  Windows 7 is running as a VM on an esxi
>>hypervisor, so I view it remotely with Microsoft Remote Desktop.  It
>>worked well on a previous cygwin release, but I don't have the exact
>>date when it changed.  Also, I don't think the problem is with MRD
>>because I see it with VNC also.
>
>Thanks for reporting this problem.
>
>"color and font problems" is a bit vague.  Can you upload a screenshot 
>somewhere which illustrates this?
>
>This is unlikely to be a problem with actual X colourmaps unless you 
>are using antique X clients which use 8 bit visuals.
>
>However, RDP can step down the display colour depth, whereas the 
>colour depth of an X server root window cannot change, which can cause 
>dithering to occur.
>
>Additionally, sometimes DirectDraw rendering to RDP doesn't seem to 
>work properly, for unknown reasons. (This is discussed briefly in [1])
>
>Since this has started 'recently', I guess it might be related to the 
>'-compositewm' option being turned on by default [2].
>
>So, you might try starting the X server with a limited colour depth 
>(e.g. '-depth 16'), or try the '-engine 1' or '-nocompositewm' options 
>[3].
>
>[1] https://x.cygwin.com/docs/ug/using-terminal-server.html
>[2] https://cygwin.com/ml/cygwin-announce/2016-06/msg00045.html
>[3] https://x.cygwin.com/docs/faq/cygwin-x-faq.html#q-command-line-args
>
>-- 
>Jon Turney
>Volunteer Cygwin/X X Server maintainer
>

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple