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Subject: Re: No cursor visible on XTerms after upgrading to Cygwin 2.5.2
To: cygwin AT cygwin DOT com
References: <0628601a-7fdf-3c65-6e8f-545c054b8816 AT Winfirst DOT Com> <fa2a957a-95e5-12cb-8c68-8359e8705825 AT Winfirst DOT Com> <9a21ad35-d1de-f8af-a485-58626c52cc2b AT dronecode DOT org DOT uk>
From: Mark Hansen <meh AT winfirst DOT com>
Message-ID: <f0b70fb9-a92c-6317-be59-c76b87c6a726@winfirst.com>
Date: Mon, 27 Jun 2016 13:21:11 -0700
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On 6/27/2016 10:53 AM, Jon Turney wrote:
> On 26/06/2016 19:15, Mark Hansen wrote:
>> On 6/26/2016 6:58 AM, Mark Hansen wrote:
>>> I'm having a problem since upgrading to Cygwin 2.5.2 yesterday. I
>>> was running 2.5.1 previously.
>>>
>>> When running X applications, the mouse cursor is not visible as I
>>> move the mouse over the application window. When moving the mouse
>>> across the display, I can see it change to the resize cursor when
>>> hitting the edge of the XTerm window, but as soon as it moves
>>> inside the application window, it vanishes.
> [...]
>> After playing with this some, I found the -swcursor option to the
>> XServer was causing the problem. If I remove that, then the mouse
>> cursor is drawn in the X clients as expected.
>>
>> I don't remember why I was using this option (I got the startup
>> options too long ago to remember) but in looking for information on
>> this option, there's not much in the way of an explanation.
>>
>> So, I think the -swcursor option is broken as of 2.5.2, but do I
>> need it? I'm guessing I don't and so I'm going without it for now.
>
> Thanks for reporting this issue.
>
> This is actually caused by a recent change in the xserver 1.18.3-1
> package [1], where -compositewm was made the default.
>
> -swcursor is not compatible with -compositewm (because the window
> contents are drawn from an off-screen pixmap, not from the screen
> pixmap, where the software cursor will be drawn).
>
> I'll update the man page to note this and look at ignoring or rejecting
> -swcursor when -compositewm is enabled.
>
> I don't know why anyone would need to use -swcursor.
>
> [1] https://cygwin.com/ml/cygwin-announce/2016-06/msg00045.html
>

Thanks, Jon. I'm going to remove -swcursor from my usage.


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